Advantech 910GMLE Скачать руководство пользователя страница 7

Страница: 7 / 94

vii

AIMB-252 User Manual

Table B.1: IDE Hard Drive Connector (IDE1) ............................ 72

B.2

Parallel Port Connector (LPT1) ............................................................... 73

Table B.2: Parallel Port Connector (LPT1) ................................ 73

B.3

USB Connector (USB56,USB78) ............................................................ 73

Table B.3: USB5/USB6 Connector (USB56) ............................. 73

B.4

VGA Connector (VGA1) .......................................................................... 74

Table B.4: VGA Connector (VGA1) ........................................... 74

B.5

RS-232 Serial Port (COM1) .................................................................... 74

Table B.5: Rs-232 Serial Port (COM1) ...................................... 74

B.6

RS-232 Serial Port (COM2 ~ COM5) ...................................................... 75

Table B.6: RS-232 Serial Port (COM23).................................... 75
Table B.7: RS-232 Serial Port (COM45).................................... 75

B.7

PS/2 Keyboard/ Mouse Connnector (KBMS1) ........................................ 76

Table B.8: PS/2 Keyboard/ Mouse Connector (KBMS1) ........... 76

B.8

CPU Fan Power Connector (CPUFAN1) ................................................ 76

Table B.9: CPU Fan Power Connector (CPUFAN1).................. 76

B.9

Power LED & Keyboard Lock Connector (JFP3) .................................... 77

Table B.10: Power LED and Keylock Connector (JFP3) ............ 77

B.10

External Speaker Connector (JFP2/ SPEAKER) .................................... 77

Table B.11:External Speaker Connector (JFP2/SPEAKER)....... 77

B.11

Reset Connector (JFP1/ RESET) ........................................................... 78

Table B.12:Reset Connector (JFP1/ RESET)............................. 78

B.12

HDD LED Connector (JFP2/ HDDLED) .................................................. 78

Table B.13:HDD LED Connector (JFP2/ HDDLED).................... 78

B.13

ATX Soft Power Switch (JFP1/ PWR_SW) ............................................. 78

Table B.14:ATX Soft Power Switch (JFP1/ PWR_SW) .............. 78

B.14

AC-97 Audio Interface (FPAUD1) ........................................................... 79

Table B.15:AC-97 Audio Interface (FPAUD1)............................. 79

B.15

SM Bus Connector (JFP2) ...................................................................... 79

Table B.16:SM Bus Connector (JFP2)........................................ 79

B.16

GPIO Pin Header (GPIO1)..................................................................... 80

Table B.17:GPIO Pin Header (GPIO1) ....................................... 80

B.17

LVDS Connector (LVDS1/LVDS2) .......................................................... 81

Table B.18:LVDS Connector (LVDS1/2)..................................... 81

B.18

LVDS Power Jumper (JLV1, JLV2) ......................................................... 82

Table B.19:LVDS Power Jumper (JLV1, JLV2) .......................... 82

B.19

LVDS Invert (INV1, INV2) ....................................................................... 82

Table B.20:LVDS Invert (INV1, INV2)......................................... 82

B.20

System I/O Ports ..................................................................................... 83

Table B.21:System I/O Ports ...................................................... 83

B.21

DMA Channel Assignments .................................................................... 83

Table B.22:DMA Channel Assignments...................................... 83

B.22

Interrupt Assignments ............................................................................. 84

Table B.23:Interrupt Assignments............................................... 84

B.23

1st MB Memory Map ............................................................................... 84

Table B.24:1st MB Memory Map ................................................ 84

B.24

PCI Bus Map ........................................................................................... 84

Table B.25:PCI Bus Map ............................................................ 84

Содержание 910GMLE

Страница 1: ...User Manual AIMB 252 910GMLE 915GME Intel 910GMLE FC BGA 479 or 915GME FC PGA 478 Pentium M Celeron M Mini ITX Main Board Ver 1 00...

Страница 2: ...power supply is broken do not try to fix it by yourself Contact a qualified service technician or your retailer Operation safety Before installing the motherboard and adding devices on it carefully r...

Страница 3: ...equency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Opera tion of this device in a residential area is likely...

Страница 4: ...s and other information http support advantech com tw Support default aspx Packing List Before you begin installing your single board please make sure that the following materials have been shipped 1...

Страница 5: ...ory 16 1 12 1 DIMM Sockets Location 16 1 12 2 Memory Configurations 17 1 12 3 Installing a DDR2 DIMM 18 1 12 4 Removing a DDR2 DIMM 19 1 13 Expansion Slots 19 1 13 1 Installing an Expansion Card 19 1...

Страница 6: ...44 2 2 8 PC Health Status 45 2 2 9 Frequency voltage Control 46 2 2 10 Load Setup Defaults 46 2 2 11 Set Password 47 2 2 12 Save Exit Setup 49 2 2 13 Quit Without Saving 49 Chapter 3 Chipset Software...

Страница 7: ...ker Connector JFP2 SPEAKER 77 B 11 Reset Connector JFP1 RESET 78 Table B 12 Reset Connector JFP1 RESET 78 B 12 HDD LED Connector JFP2 HDDLED 78 Table B 13 HDD LED Connector JFP2 HDDLED 78 B 13 ATX Sof...

Страница 8: ...AIMB 252 User Manual viii...

Страница 9: ...Chapter 1 1 Production Introduction This chapter describes the main board features and the new tech nologies it supports...

Страница 10: ...cord from the wall socket before touching any component Use a grounded wrist strap or touch a safely grounded object or a metal object such as the power supply case before handling com ponents to avoi...

Страница 11: ...roduction 1 2 2 Screw Holes Place four 4 screws into the holes indicated by circles to secure the motherboard to the chassis Caution Do not over tighten the screws Doing so can damage the motherboard...

Страница 12: ...Motherboard Layout Audio1 LAN2_USB34 LAN1_USB12 VGA1 LPT1 COM1 KBMS1 SYSFAN1 DIMMA1 LVDS1 COM45 COM23 CPUFAN1 EATXPWR1 IDE1 SATA2 SATA1 PCI1 FPAUD1 INV1 USB56 USB78 GPIO1 JSETCOM1 DIMMB1 JFP3 JFP2 JFP...

Страница 13: ...GMCH integrated Graphics Media Accelerator 900 VRAM Intel DVMT 3 0 supports up to 128 MB video memory 1st LVDS Single channel 18 bit Dual channel 36 bit LVDS 2nd LVDS Single channel 18 24 bit Dual cha...

Страница 14: ...rupt system reset Interval Programmable 1 255 sec min Power Requirement Typical Intel 915GME and Pentium M 760 2 0 GHz FSB 533 MHz 2 GB DDR2 SDRAM 5 V 3 3 V 12 V 5 VSB 2 61 A 0 71 A 1 93 A 0 59 A Envi...

Страница 15: ...Intel Socket 478 Pentium M Celeron M Processor DDR2 400 533 DDR2 400 533 Channel A Channel B Direct Media Interface 2 GB s bandwidth CRT VGA 18 bit LVDS 1st LVDS 2nd LVDS 24 bit LVDS via SDVO 1 ATA 1...

Страница 16: ...915GME 400 533 2 5 Single AIMB 252G2 M0A1E Celeron M 600 910GMLE 400 2 5 Dual AIMB 252VG S0A1E Celeron M 1Ghz 910GMLE 400 1 5 Single Part Number Description AIMB RP30P 03A1E 2U riser card with 3 PCI s...

Страница 17: ...cks Table 1 3 Internal Connector Label Function Note CPUFAN1 CPU fan connector 3 x 1 wafer pitch 2 54 mm SYSFAN1 System fan connector 3 x 1 wafer pitch 2 54 mm SYSFAN2 System fan connector 3 x 1 wafer...

Страница 18: ...on ATX AT System Off off AT System Off slow flash ATX JFP2 External speaker SATA HDD LED connector SM Bus connector JFP1 Power switch reset connector Table 1 4 CMOS1 COMS1 Clear CMOS Keep COMS data Cl...

Страница 19: ...cessor Supports mPGA478M Micro FCPGA Table 1 6 COM1 RS 232 422 485 mode selector JSETCOM1 JSETCOM1 COM1 RS 232 422 485 jumper setting Take one of the marked corner with gold triangle on the CPU This...

Страница 20: ...any damage to the PnP cap socket contacts motherboard components Your place of purchase or local distributor will shoulder the cost of repair only if the damage is shipment transit related Keep the ca...

Страница 21: ...above the socket and the gold triangular mark on the CPU must align with pin 1 of the CPU socket 4 Carefully insert the CPU into the socket until it fits in place Gold mark 5 Turn the screw to the lo...

Страница 22: ...nce Warning After installation make sure to plug in the ATX power cable to the moth erboard Caution If you purchased a separate CPU heatsink and fan assembly make sure that you have properly applied T...

Страница 23: ...ect the CPU fan cable to the connector on the motherboard labelled CPUFAN1 Caution Do not forget to connect the fan cables to the fan connectors Insuf ficient air flow inside the system may damage the...

Страница 24: ...pin footprint compared to the 240 pin DDR DIMM DDR2 DIMMs are notched differ ently to prevent installation on a DDR DIMM socket The following figure illustrates the location of the sockets 1 Disconne...

Страница 25: ...y of the recommended configurations Always install DIMMs with the same CAS latency For optimum compatibility it is recommended that you obtain memory modules from the same vendor Due to chipset resour...

Страница 26: ...system components Failure to do so may cause severe damage to both the motherboard and the components 1 Unlock a DIMM socket by press ing the retaining clips outward 2 Align a DIMM on the socket such...

Страница 27: ...rd is com pletely seated on the slot 5 Secure the card to the chassis with the screw you removed earlier 6 Replace the system cover 1 13 2 Configuring an Expansion Card After installing the expansion...

Страница 28: ...treering 6 14 Floppy Disk Controller 8 3 COM2 9 4 COM1 10 5 COM3 11 6 IRQ holder for PCI streeing 12 7 PS 2 Compatible Mouse Port 13 8 Numeric Data Processor 14 9 Primary IDE Channel 15 10 COM4 There...

Страница 29: ...AN2_USB34 LAN RJ 45 connector This port allows Gigabit connection to a Local Area Network LAN through a network hub Refer to the table below for the LAN port LED indications The optional 10 100 Mbps L...

Страница 30: ...get to connect the fan cables to the fan connectors Insuf ficient air flow inside the system may damage the motherboard components and hardware monitoring errors can occur if you fail to plug this con...

Страница 31: ...Caution Do not forget to connect the fan cables to the fan connectors Insuf ficient air flow inside the system may damage the motherboard components and hardware monitoring errors can occur if you fai...

Страница 32: ...ctor 45 COM45 DDCD2_N RRXD2 TTXD2 DDTR2_N GND DDCD3_N RRXD3 TTXD3 DDTR3_N GND DDSR2_N RRTS2_N CCTS2_N RRI2_M GND DDSR3_N RRTS3_N CCTS3_N RRI3_N GND DDCD4_N RRXD4 TTXD4 DDTR4_N GND DDCD5_N RRXD5 TTXD5...

Страница 33: ...dule that supports either HD Audio or legacy AC 97 optional audio standard Connect one end of the front panel audio I O module cable to this connector Note For motherboards with the optional HD Audio...

Страница 34: ...turn your computer on and off 1 14 9 Reset JFP1 RESET Many computer cases offer the convenience of a reset button Connect the wire for the reset button 1 14 10HDD LED JFP2 HDDLED You can connect an LE...

Страница 35: ...ing the front panel power switch The power LED status is indicated as fol lowing table 1 14 13USB 2 0 Connector USB56 USB78 These connectors are for USB 2 0 ports Connect the USB GAME module cable to...

Страница 36: ...Caution Never connect a 1394 cable to the USB connectors Doing so will dam age the motherboard Note The USB module is purchased separately Note Make sure that your ATX 12 V power supply can provide 6...

Страница 37: ...Manual Chapter 1 Production Introduction 1 14 15LCD Inverter Connector INV1 LVDS INV2 Note Signal Description Signal Signal Description VR Vadj 0 75 V Recommended 4 7K 1 16 W ENBKL LCD backlight ON OF...

Страница 38: ...AIMB 252 User Manual 30 Note Signal Description Signal Signal Description VR Vadj 0 75 V 4 25 V Recommended 4 7K 1 16 W ENBKL LCD backlight ON OFF control signal...

Страница 39: ...ED0 GND_2 GND_8 OD1 OD1 ED1 ED1 GND_3 GND_9 OD2 OD2 ED2 ED2 GND_4 GND_10 OCK OCK ECK ECK GND_5 GND_11 DDC_CLK DDC_DAT GND_6 GND_12 NC NC HPLG NC NC VCON VDDSAFE_1 VDDSAFE_2 GND_1 GND_7 VDDSAFE_3 VDDSA...

Страница 40: ...19Serial ATA Connector 1 2 SATA1 SATA2 SATA1 SATA2 Note Install the Windows 2000 Service Pack 4 or the Windows XP Service Pack1 before using Serial ATA When using the connectors in Standard IDE mode c...

Страница 41: ...Chapter 2 2 BIOS Operation...

Страница 42: ...signs for customers need 2 2 BIOS Setup The AIMB 252 Series system has build in AwardBIOS with a CMOS SETUP utility which allows user to configure required settings or to activate certain system fea t...

Страница 43: ...page includes all onboard peripheral devices Power Management Setup This setup page includes all the items of Power Management features PnP PCI Configurations This setup page includes PnP OS and PCI...

Страница 44: ...amount of extended memory above 1MB in CPU s memory address map installed in the system Total Memory This item displays the total system memory size Week From Sun to Sat determined and display by BIOS...

Страница 45: ...tting default is enabled First Second Third Other Boot Drive Swap Floppy Drive Disabled This item enables users to swap floppy A and B identified without change hardware cable connection Boot Up Flopp...

Страница 46: ...Chipset Features DRAM Timing Selectable By SPD This item enables users to set the optimal timings for items 2 through 5 system default setting of By SPD to follow the SPD information and ensure the s...

Страница 47: ...be cached to allow faster execution and bet ter performance Memory Hole At 15 M 16 M Disabled This item reserves 15 MB 16 MB memory address space to ISA expansion cards that specifically require the...

Страница 48: ...d Device This item enables users to set the Onboard device status includes enable USB AC97 MC97 and LAN devices Super IO Device This item enables users to set the Super IO device status includes enabl...

Страница 49: ...On setting boots up the system after failure Watch Dog Timer Select Disabled When disabled the Watchdog Timer will be disabled It will not monitor the time taken for each task performed by the operat...

Страница 50: ...me Auto This item allows system to reinitialize VGA BIOS after system resume from ACPI S3 mode Power Management User Define This item allows user to select system power saving mode Note This Power man...

Страница 51: ...llows you to wake up the system via COM port from the remote host The choices Enabled Disabled USB KB Wake_Up From S3 Disabled This item allows user to set USB keyboard wake up system from S3 Enable o...

Страница 52: ...s in such a state that the OS cannot boot Resources Controlled By Auto ESCD The commands here are Auto ESCD or Manual Choosing Manual requires you to choose resources from the following sub menu Auto...

Страница 53: ...5F 90C 194F and 95C 205F Current System Temperature This shows you the current temperature of system Current CPU Temperature This shows the current CPU temperature VCORE and Other Voltages This shows...

Страница 54: ...remain active even to unoccupied or inactive slots Spread Spectrum Disabled This item enables users to set the spread spectrum modulation CPU Clock It shows CPU Clock frequency 2 2 10 Load Setup Defa...

Страница 55: ...er Password enter the existing password and press Enter 3 You will see Confirm Password Type it again and press Enter 4 Select Set Password again and at the Enter Password prompt enter the new passwor...

Страница 56: ...r Password enter the existing password and press Enter 3 You will see Confirm Password Type it again and press Enter 4 Select Set Password again and at the Enter Password prompt please don t enter any...

Страница 57: ...t Setup 2 2 13 Quit Without Saving Note Type Y will quit the BIOS Setup Utility and save user setup value to CMOS Type N will return to BIOS Setup Utility Note Type Y will quit the BIOS Setup Utility...

Страница 58: ...AIMB 252 User Manual 50...

Страница 59: ...Chapter 3 3 Chipset Software Install Utility...

Страница 60: ...ng sys tem commands Review the relevant operating system commands and the pertinent sections of your application software s user s manual before performing the installa tion 3 2 Introduction The Intel...

Страница 61: ...nstall Utility 3 3 Windows XP Driver Setup Insert the driver CD into your system s CD ROM drive You can see the driver folders items Move the mouse cursor over the folder INF In INF folder you can cli...

Страница 62: ...AIMB 252 User Manual 54...

Страница 63: ...Chapter 4 4 VGA Setup...

Страница 64: ...nel 36 bit LVDS2 single channel 24 bit dual channel 48 bit LVDS2 is only available in AIMB 252G2 M0A1E sku detail please see 4 3 Dual display supporting table supporting up to WUXGA 1600X1200 panel re...

Страница 65: ...57 AIMB 252 User Manual Chapter 4 VGA Setup...

Страница 66: ...X OK Clone Display CRT OK OK LVDS1 X X LVDS2 X X Driver IEGD VBIOS BMP Drive rInformation Ver 8 0 Panel Type LVDS1 800 600 LVDS2 1280 1024 CRT LVDS1 LVDS2 Only Display CRT OK LVDS1 OK LVDS2 OK Twin D...

Страница 67: ...Chapter 5 5 LAN Configuration...

Страница 68: ...Wake on LAN WOL function 5 PCI Express X1 host interface 5 3 Installation The AIMB 252 s Realtek RTL8111C Gigabit integrated controller supports all major network operating systems However the install...

Страница 69: ...61 AIMB 252 User Manual Chapter 5 LAN Configuration Based on different OS choose proper LAN driver to install...

Страница 70: ...AIMB 252 User Manual 62...

Страница 71: ...Appendix A A Programming the Watchdog...

Страница 72: ...r W83627DHG A It provides the following functions for user programming Can be enabled and disabled by user s program Timer can be set from 1 to 255 seconds or 1 to 255 minutes Generates an interrupt o...

Страница 73: ...MB 252 User Manual Appendix A Programming the Watchdog Unlock Select register of watchdog timer Enable the function of the watchdog timer Use the function of the watchdog timer Lock W83627DHG A W83627...

Страница 74: ...to bit 3 set minute as counting unit F6 hex write 0 stop timer default 01 FF hex The amount of the count in seconds or minutes depends on the value set in register F5 hex This num ber decides how long...

Страница 75: ...t dx al Dec dx Enable the function of watchdog timer Mov al 30h Out dx al Inc dx Mov al 01h Out dx al Dec dx Set second as counting unit Mov al 0f5h Out dx al Inc dx In al dx And al not 08h Out dx al...

Страница 76: ...as counting unit Mov al 0f5h Out dx al Inc dx In al dx Or al 08h Out dx al Dec dx Set timeout interval as 5 minutes and start counting Mov al 0f6h Out dx al Inc dx Mov al 5 Out dx al Dec dx lock W836...

Страница 77: ...x al Dec dx lock W83627DHG A Mov al 0aah Out dx al 4 Enable watchdog timer to be reset by keyboard Mov dx 2eh unlock W83627DHG A Mov al 87h Out dx al Out dx al Mov al 07h Select registers of watchdog...

Страница 78: ...t dx al Out dx al Mov al 07h Select registers of watchdog timer Out dx al Inc dx Mov al 08h Out dx al Dec dx Enable the function of watchdog timer Mov al 30h Out dx al Inc dx Mov al 01h Out dx al Dec...

Страница 79: ...Appendix B B Pin Assignments...

Страница 80: ...DATA 5 8 DATA 10 9 DATA 4 10 DATA 11 11 DATA 3 12 DATA 12 13 DATA 2 14 DATA 13 15 DATA 1 16 DATA 14 17 DATA 0 18 DATA 15 19 GND 20 N C 21 DISK DMA REQUEST 22 GND 23 IO WRITE 24 GND 25 IO READ 26 GND 2...

Страница 81: ...l Pin Signal 1 STROBE 14 AUTOFD 2 D0 15 ERR 3 D1 16 INIT 4 D2 17 SLCTINI 5 D3 18 GND 6 D4 19 GND 7 D5 20 GND 8 D6 21 GND 9 D7 22 GND 10 ACK 23 GND 11 BUSY 24 GND 12 PE 25 GND 13 SLCT low active Table...

Страница 82: ...Table B 4 VGA Connector VGA1 Pin Signal Pin Signal 1 RED 9 VCC 2 GREEN 10 GND 3 BLUE 11 N C 4 N C 12 SDAT 5 GND 13 H SYNC 6 GND 14 V SYNC 7 GND 15 SCLK 8 GND 5 15 1 11 10 6 Table B 5 Rs 232 Serial Por...

Страница 83: ..._N 7 DDTR2_N 8 RRI2_N 9 GND 10 GND 11 DDCD3_N 12 DDSR3_N 13 RRXD3 14 RRTS3_N 15 TTXD3 16 CCTS3_N 17 DDTR3_N 18 RRI3_N 19 GND 20 GND Table B 7 RS 232 Serial Port COM45 Pin Signal Pin Signal 1 DDCD4_N 2...

Страница 84: ...Connector CPUFAN1 Table B 8 PS 2 Keyboard Mouse Connector KBMS1 Pin Signal Pin Signal 1 KB DATA 2 NC 7 MS DATA 6 NC 3 GND 8 NC 4 VCC 9 GND 5 KB CLOCK 10 VCC 11 MS CLOCK 12 NC 12 11 10 9 8 7 5 3 1 2 4...

Страница 85: ...he ground B 10 External Speaker Connector JFP2 SPEAKER The single board computer has its own buzzer You can also connect it to the external speaker on your computer chassis Table B 10 Power LED and Ke...

Страница 86: ...2 HDDLED B 13 ATX Soft Power Switch JFP1 PWR_SW Table B 12 Reset Connector JFP1 RESET Pin Signal 1 PWR_BTN 2 GND 3 RESET 4 GND 1 2 4 3 Table B 13 HDD LED Connector JFP2 HDDLED Pin Signal 2 HDDLED 4 HD...

Страница 87: ...ts B 14 AC 97 Audio Interface FPAUD1 B 15 SM Bus Connector JFP2 Table B 15 AC 97 Audio Interface FPAUD1 1 MIC IN 2 GND 3 MIC_VCC 4 VCC 5 LRR 6 LOUT_R 7 JDO 8 NC 9 LRL 10 LOUT_L Table B 16 SM Bus Conne...

Страница 88: ...GPIO1 Pin Signal Pin Signal 1 DIO_GP20 2 DIO_GP10 3 DIO_GP21 4 DIO_GP11 5 DIO_GP22 6 DIO_GP12 7 DIO_GP23 8 DIO_GP13 9 DIO_GP24 10 DIO_GP14 11 DIO_GP25 12 DIO_GP15 13 DIO_GP26 14 DIO_GP16 15 DIO_GP27 1...

Страница 89: ...AFE_1 21 VDDSAFE_2 2 GND_1 22 GND_7 3 VDDSAFE_3 23 VDDSAFE_4 4 OD0 24 ED0 5 OD0 25 ED0 6 GND_2 26 GND_8 7 OD1 27 ED1 8 OD1 28 ED1 9 GND_3 29 GND_9 10 OD2 30 ED2 11 OD2 31 ED2 12 GND_4 32 GND_10 13 OCK...

Страница 90: ...JLV1 JLV2 default setting B 19 LVDS Invert INV1 INV2 Table B 19 LVDS Power Jumper JLV1 JLV2 Pin Signal 1 VCC3 2 VDD_LCD 3 VCC 3 1 2 3 1 2 3 3V 5V Voltage Jumper Setting Table B 20 LVDS Invert INV1 INV...

Страница 91: ...F1 Reset math co processor 0F8 0FF Math co processor 1F0 1F8 Fixed disk 200 207 Game I O 278 27F Parallel printer port 2 LPT3 290 297 On board hardware monitor 2F8 2FF Serial port 2 300 31F Prototype...

Страница 92: ...IRQ11 Serial communication port 5 8 IRQ12 PS 2 mouse 9 IRQ13 INT from co processor 10 IRQ14 Primary IDE Channel 12 IRQ3 Serial communication port 2 13 IRQ4 Serial communication port 1 14 IRQ5 Serial...

Страница 93: ...85 AIMB 252 User Manual Appendix B Pin Assignments...

Страница 94: ...tions are subject to change without notice No part of this publication may be reproduced in any form or by any means electronic photocopying recording or otherwise without prior written permis sion of...

Результаты поиска

Содержание 910GMLE

Отзывы:

Похожие инструкции для 910GMLE

Бренды по названию

Популярные бренды

Advantech 910GMLE, Руководство пользователя

Результаты поиска

Содержание 910GMLE

Отзывы:

Похожие инструкции для 910GMLE

Бренды по названию

Популярные бренды