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PCI-SIO4 User Manual

General Standards Corporation

8302A Whitesburg Drive Huntsville, AL 35802, Phone: (256) 880-8787

48

3.4

LOCAL DMA REGISTERS

The Local DMA registers are used to setup the DMA transfers to and from the on-board FIFOs. Since the

PCI/PMC-HPDI32 is half-duplex (data is only transferred in one direction at a time), only DMA Channel 0

is used.

Table 3.4-1: DMA Registers

PCI

CFG

Addr

Local

Offset

Addr

PCI/Local

Writable

Register Name

Value after

Reset

0x80

0x100

Y

DMA Channel 0 Mode Register

0x00000003

0x84

0x104

Y

DMA Channel 0 PCI Address Register

0x00000000

0x88

0x108

Y

DMA Channel 0 Local Address Register

0x00000000

0x8C

0x10C

Y

DMA Channel 0 Transfer Byte Count Register

0x00000000

0x90

0x110

Y

DMA Channel 0 Descriptor Pointer Register

0x00000000

0x94

0x114

Y

DMA Channel 1 Mode Register (Unused)

0x00000003

0x98

0x118

Y

DMA Channel 1 PCI Address Register (Unused)

0x00000000

0x9C

0x11C

Y

DMA Channel 1 Local Address Register (Unused)

0x00000000

0xA0

0x120

Y

DMA Channel 1 Transfer Byte Count Register (Unused)

0x00000000

0xA4

0x124

Y

DMA Channel 1 Descriptor Pointer Register (Unused)

0x00000000

0xA8

0x128

Y

DMA Channel 1Command/Status Register
DMA Channel 0 Command/Status Register

0x00000010

0xAC

0x12C

Y

DMA Mode/ Arbitration Register

0x00000000

0xB0

0x130

Y

DMA Threshold Register

0x00000000

3.4.1

DMA

C

HANNEL

0

M

ODE

R

EGISTER

:

(PCI

0

X

80)

D1:0

Local Bus Width

00 = 8 bit DMA transfer width

01 = 16 bit DMA transfer width

10/11 = 32 bit DMA transfer width

D5:2

Internal Wait States (Unused)

D6

Ready Input Enable

Note: This bit should always be set to ‘1’ (Ready Input Enabled).

D7

Bterm# Input Enable (Unused)

Note: This bit should always be set to ‘0’ (BTERM# Disabled).

D8

Local Burst Enable

Note: If Burst enabled, the user must ensure FIFO will not become empty (read) or full
(write) during the burst access. For Demand Mode DMA, this means the Almost
Empty/Almost Full flags should be set to a value of at least 8.

D9

Chaining Enable
A ‘1’ indicates chaining mode is enabled.
For chaining mode, the DMA source address, destination address and byte count are
loaded from memory in PCI Space.

D10

Done Interrupt Enable

A ‘1’ enables interrupt when DMA done.

Note:

If DMA clear count mode is enabled, the interrupt won’t occur until the byte count

is cleared.

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Содержание PCI-SIO4

Страница 1: ...PCI SIO4 User Manual General Standards Corporation 8302A Whitesburg Drive Huntsville AL 35802 Phone 256 880 8787 Fax 256 880 8788 URL www generalstandards com E mail techsupport generalstandards com...

Страница 2: ......

Страница 3: ...ecember 1 1997 edited bit map and bit descriptions edited section numbering and edited table of contents 4 December 2 1997 edited Chapter 3 hardware configurations 5 April 17 1998 Updated bit map 6 Ap...

Страница 4: ...rds Corporation does not assume any liability arising out of the application or use of any product or circuit described herein nor is any license conveyed under any patent right of any rights of other...

Страница 5: ......

Страница 6: ...oposed standard Wayne Fisher PMC Chair 2001 Logic Drive San Jose CA 95124 3456 USA Ph 408 369 6250 Fax 408 371 3382 Em wfisher fci com Dave Moore PMC Draft Editor Digital Equipment Corporation 146 Mai...

Страница 7: ......

Страница 8: ...0x24 14 2 1 10 Channel 2 FIFO LOC 0x28 14 2 1 11 Channel 2 Control Status LOC 0x2C 14 2 1 12 Channel 3 Tx Almost LOC 0x30 16 2 1 13 Channel 3 Rx Almost LOC 0x34 16 2 1 14 Channel 3 FIFO LOC 0x38 16 2...

Страница 9: ...R 27 2 3 9 1 Low LOC 0xn10 27 2 3 9 2 High LOC 0xn11 27 2 3 10 Hardware Configuration Register HCR 28 2 3 10 1 Low LOC 0xn12 28 2 3 10 2 High LOC 0xn13 28 2 3 11 Interrupt Vector Register IVR 28 2 3 1...

Страница 10: ...27 1 Low LOC 0xn36 37 2 3 27 2 High LOC 0xn37 37 2 3 28 Transmit Sync Register TSR 37 2 3 28 1 Low LOC 0xn38 37 2 3 28 2 High LOC 0xn39 37 2 3 29 Transmit Count Limit Register TCLR 38 2 3 29 1 Low LO...

Страница 11: ...143 45 3 3 Runtime Registers 46 TABLE 3 3 1 RUNTIME REGISTERS 46 3 3 1 Interrupt Control Status PCI 0x68 Reset 0x00000000 46 3 3 2 Serial EEPROM Control PCI Command Codes User I O Control Init Control...

Страница 12: ...The Zilog Clock Select Jumpers J3 J4 J7 J8 54 FIGURE 5 4 2 CLOCK JUMPERS ROUTING 55 FIGURE 5 4 3 DATA ROUTING 55 FIGURE 5 4 4 CTS DCD ROUTING 56 CHAPTER 6 ORDERING OPTIONS 57 6 0 Ordering Information...

Страница 13: ...Interface Interrupt functionality FIFOs are provided for data transmit and for data receive to increase the size of the receive buffers User interface signals connections are provided via connectors o...

Страница 14: ...data from the Z16C30 or have the data buffered into the main Rx FIFOs and retrieved by the software at a later time depending on how the Z16C30 has been initialized 1 6 DATA TRANSMISSION Data is place...

Страница 15: ...General Standards Corporation 8302A Whitesburg Drive Huntsville AL 35802 Phone 256 880 8787 8 Tx FIFO almost empty Rx FIFO almost full Exited Hunt IdleRcvd Break Abort RxBound Abort ParityError RxOver...

Страница 16: ...Empty 0x2C D32 RW Channel 2 Control Status 0xXXXXCCXX 0x30 D32 RW Channel 3 Tx Almost 0xXXXXXXXX 0x34 D32 RW Channel 3 Rx Almost 0xXXXXXXXX 0x38 D32 RW Channel 3 FIFO Empty 0x3C D32 RW Channel 3 Cont...

Страница 17: ...al Channel 3 Rx FIFO Almost Full Hold until Serial Channel 3 Rx FIFO Almost Empty 1 0 1 Request DMA on Serial Channel 3 Tx FIFO Almost Empty Hold until Serial Channel 3 Rx FIFO Almost Empty 0 1 1 Requ...

Страница 18: ...signal on the cable to go from a tri state condition to a loaded condition D4 Channel 2 Enable Drive Upper Clk Writing a 1 to this bit will turn on the transmitter for the Channel 2 Tx Clk on the uppe...

Страница 19: ...annel 4 Enable Receive Upper Clk Writing a 1 to this bit will turn on the receiver for the Channel 4 Rx clock on the upper portion of the cable This will cause this signal on the cable to go from a tr...

Страница 20: ...tion of the cable will drive the Cable Writing a 1 to this bit will turn on the transmitters for the Channel 1 lower portion of the cable The signals that are turned on are the Channel 1 TxD and Chann...

Страница 21: ...channel D0 15 Used for the Almost Empty Flag D16 31 Used for the Almost Full Flag 2 1 10 CHANNEL 2 FIFO LOC 0X28 D0 7 Channel 2 FIFO Data The FIFOs are setup in a way that the Rx FIFO and the Tx FIFO...

Страница 22: ...aded condition D5 Enable the Channel 2 Receivers for the Lower portion of the cable will load the cable Writing a 1 to this bit will turn on the receivers for the Channel 2 lower portion of the cable...

Страница 23: ...it is the software s responsibility to delay approximately 10ms before accessing the local side of the board again This bit is a self timed pulse therefore it is not necessary for software to return t...

Страница 24: ...eturn to clear this bit it will clear itself Note that after power up and after any reset to this component the next access to channel 3 or channel 4 USC must be a write of 0x00 to offset 0x00 of chan...

Страница 25: ...ore it is not necessary for software to return to clear this bit it will clear itself D2 Enable the Channel 4 Transmitters for the Upper portion of the cable will drive the cable Writing a 1 to this b...

Страница 26: ...0xC 1100 Almost Empty and Empty 0xD 1101 Almost Empty but not Empty 0xF 1111 In between Almost Empty and Almost Full 0xB 1011 Almost Full but not full 0x3 0011 Almost Full and Full 2 1 20 CHANNEL 1 SY...

Страница 27: ...Enable Channel 3 Interrupt on Rx FIFO Almost Full D11 Enable Channel 3 Interrupt on USC Request Interrupt D12 Enable Channel 4 Interrupt on Sync Detected D13 Enable Channel 4 Interrupt on Tx FIFO Almo...

Страница 28: ...ntrol register is a 1 then the source has performed a PCI interrupt and has latched itself Writing a 1 to the respective bit in the interrupt status register clears the interrupt status bit A second i...

Страница 29: ...resses n stands for Channel Number 2 3 1 CHANNEL COMMAND ADDRESS REGISTER CCAR Same format for Channels 0 3 USC Control Registers 2 3 1 1 Low LOC 0xn00 D0 WO Upper Lower Byte Select D1 D5 WO Address 4...

Страница 30: ...Reserved 11101 Reserved 11110 Reserved 11111 Reserved Selected upon reset 2 3 2 CHANNEL MODE REGISTER CMR 2 3 2 1 Low LOC 0xn02 D0 D3 WO Receiver Mode encoded as follows 0000 Asynchronous 0001 Extern...

Страница 31: ...0xn04 D0 RO RxACK D1 RO TxACK D2 4 HDLC Tx Last Character Length encoded as follows 000 8 bits 001 1 bit 010 2 bits 011 3 bits 100 4 bits 101 5 bits 110 6 bits 111 7 bits D5 Reserved D6 RO Loop Sendi...

Страница 32: ...follows 00 All Zeros 01 All Ones 10 Alternating 1 0 11 Alternating 0 1 D2 3 Tx Preamble Length encoded as follows 00 8 bits 01 16 bits 10 32 bits 11 64 bits D4 Tx Flag Preamble D6 7 Tx Status Block Tr...

Страница 33: ...0011 CRC Byte 1 00100 Rx FIFO Write 00101 Clock Multiplexer Outputs 00110 CTR0 and CTR1 Counters 00111 Clock Multiplexer Inputs 01000 DPLL State 01001 Low Byte of Shifters 01010 CRC Byte 2 01011 CRC B...

Страница 34: ...Transmit Clock Source encoded as follows 000 Disabled 001 RxC Pin 010 TxC Pin 011 DPLL Output 100 BRG0 Output 101 BRG1 Output 110 CTR0 Output 111 CTR1 Output D6 7 RW DPLL Clock Source encoded as foll...

Страница 35: ...t 1 D5 RW BRG1 Enable D4 RW BRG1 Single Cycle Continuous D6 7 Tx ACK Pin Control encoded as follows 00 3 State Output 01 Tx Acknowledge Input 10 Output 0 11 Output 1 2 3 10 2 High LOC 0xn13 D0 D1 DPLL...

Страница 36: ...ows 000 Input Pin 001 Rx Clock Output 010 Rx Byte Clock Output 011 SYNC Output 100 BRG0 Output 101 BRG1 Output 110 CTR0 Output 111 DPLL Rx Output D3 D5 TxC Pin Control encoded as follows 000 Input Pin...

Страница 37: ...R 2 3 13 1 Low LOC 0xn18 D0 RW Device Status IE D1 RW I O Status IE D2 RW Transmit Data IE D3 RW Transmit Status IE D4 RW Receive Data IE D5 RW Receive Status IE D6 7 IE Command encoded as follows 00...

Страница 38: ...W Device Status IUS D1 RW I O Status IUS D2 RW Transmit Data IUS D3 RW Transmit Status IUS D4 RW Receive Data IUS D5 RW Receive Status IUS D6 7 IUS Command encoded as follows 00 Null Command 01 Null C...

Страница 39: ...ising Edge Only 10 Falling Edge Only 11 Both Edges 2 3 16 2 High LOC 0xn1F D0 1 RW TxREQ Interrupts encoded as follows 00 Disabled 01 Rising Edge Only 10 Falling Edge Only 11 Both Edges D3 2 RW RxREQ...

Страница 40: ...Bits 011 3 Bits 100 4 Bits 101 5 Bits 110 6 Bits 111 7 Bits D5 RW Rx Parity Enable D6 7 Rx Parity Sense encoded as follows 00 Even 01 Odd 10 Space 11 Mark 2 3 18 2 High LOC 0xn23 D0 RW Queue Abort D1...

Страница 41: ...Reserved 0101 Select FIFO Status 0110 Select FIFO Interrupt Level 0111 Select FIFO Request Level 1000 Reserved 1001 Reserved 1010 Reserved 1011 Reserved 1100 Reserved 1101 Reserved 1110 Reserved 1111...

Страница 42: ...2 3 23 RECEIVE CHARACTER COUNT REGISTER RCCR 2 3 23 1 Low LOC 0xn2C D0 7 RO RCC 7 0 2 3 23 2 High LOC 0xn2D D0 7 RO RCC 15 8 2 3 24 TIME CONSTANT 0 REGISTER TC0R 2 3 24 1 Low LOC 0xn2E D0 7 RW TC0 7...

Страница 43: ...Value D3 4 Polynomial Tx CRC encoded as follows 00 CRC CCITT 01 CRC 16 10 CRC 32 11 Reserved D5 7 Tx Data Encoding encoded as follows 000 NRZ 001 NRZB 010 NRZI Mark 011 NRZI Space 100 Biphase Mark 10...

Страница 44: ...bort 1010 Reserved 1011 Reserved 1100 Reset DLE Inhibit 1101 Set DLE Inhibit 1110 Reset EOF EOM 1111 Set EOF EOM 2 3 27 TRANSMIT INTERRUPT CONTROL REGISTER TICR 2 3 27 1 Low LOC 0xn36 D0 RW TC1R Read...

Страница 45: ...MIT REGISTER TCLR 2 3 29 1 Low LOC 0xn3A D0 7 RW TCL 7 0 2 3 29 2 High LOC 0xn3B D0 7 RW TCL 15 8 2 3 30 TRANSMIT CHARACTER COUNT REGISTER TCCR 2 3 30 1 Low LOC 0xn3C D0 7 RO TCC 7 0 2 3 30 2 High LOC...

Страница 46: ...ace Unless the user is writing a device driver the details of the PCI interface Chapter 2 may be skipped 3 1 PCI CONFIGURATION REGISTERS The PCI device configuration for the PCI PMC HPDI32 is fully PC...

Страница 47: ...enabled D7 Wait Cycle Control Controls whether the device does address data stepping A 0 indicates the device never does address data stepping Note Hardcoded to 0 D8 SERR Enable A 1 allows the device...

Страница 48: ...is bit to be set 1 PCI9080 detected a parity error during a PCI address phase 2 PCI9080 detected a data parity error when it was the target of a write 3 PCI9080 detected a data parity error when perfo...

Страница 49: ...Memory Space Indicator A 1 indicates the register maps into I O space Note Hardcoded to 1 D1 Reserved D7 2 I O Base Address Default Size 256 bytes Note Hardcoded to 0 D31 8 I O Base Address Base Addre...

Страница 50: ...1 14 PCI INTERRUPT PIN REGISTER OFFSET 0X3D RESET 0X01 D7 0 Interrupt Pin register Indicates which interrupt pin the device uses 01 INTA Note PCI 9080 supports only one PCI interrupt pin INTA 3 1 15 P...

Страница 51: ...Local Accesses 0x00000000 0x1C 0x9C Y Range for Direct Master to PCI Unused 0x00000000 0x20 0xA0 Y Local Base Address for Direct Master to PCI Memory Unused 0x00000000 0x24 0xA4 Y Local Base Address f...

Страница 52: ...vice Vendor ID or SubDevice SubVendor ID D31 30 Reserved 3 2 3 BIG LITTLE ENDIAN DESCRIPTOR REGISTER PCI 0X0C Since local bus is little endian all bits should be left zero 3 2 4 LOCAL ADDRESS SPACE 0...

Страница 53: ...lbox Register 7 Unused 0x00000000 0x60 0xE0 Y PCI to Local Doorbell Register Unused 0x00000000 0x64 0xE4 Y Local to PCI Doorbell Register Unused 0x00000000 0x68 0xE8 Y Interrupt Control Status 0x00000...

Страница 54: ...2 SERIAL EEPROMCONTROL PCI COMMAND CODES USER I O CONTROL INIT CONTROL REGISTER PCI 0X6C RESET 0X0X001767E D3 0 PCI Read Command Code for DMA D7 4 PCI Write Command Code for DMA D11 8 PCI Memory Read...

Страница 55: ...Unused 0x00000000 0xA4 0x124 Y DMA Channel 1 Descriptor Pointer Register Unused 0x00000000 0xA8 0x128 Y DMA Channel 1Command Status Register DMA Channel 0 Command Status Register 0x00000010 0xAC 0x12C...

Страница 56: ...must start and end at the Cache Line Boundaries D14 DMA EOT End of Transfer Enable Unused D15 DMA Stop Data Transfer Mode A 0 sends a BLAST to terminate DMA transfer Note This bit should always be set...

Страница 57: ...2 3 4 8 DMA THRESHOLD REGISTER PCI 0XB0 D3 0 DMA Channel 0 PCI to Local Almost Full C0PLAF D7 4 DMA Channel 0 Local to PCI Almost Empty C0LPAE D11 8 DMA Channel 0 Local to PCI Almost Full C0LPAF D15...

Страница 58: ...by the user Each serial communication channel provides two 32 bit registers for setting these values a TX FIFO Almost Register and an RX FIFO Almost Register Each of these registers if further broken...

Страница 59: ...which may be utilized by the application code or device driver to perform various operations Interrupt sources may include but are not limited to receive FIFO buffer almost empty sync word detection...

Страница 60: ...There is a 68 pin DSUB user I O interface connector PLUG mounted soldered to the front edge of the board Ref Des PA2 for row A PB2 for row B The part number is P50E 068PI SRI TG manufacturer Robinsen...

Страница 61: ...17 Channel 4 Lwr Cable TX RX Clk 51 Channel 2 Lwr Cable TX RX Clk 18 Channel 4 Lwr Cable TX RX Clk 52 Channel 2 Upr Cable TXD RXD 19 Channel 4 Upr Cable TXD RXD 53 Channel 2 Upr Cable TXD RXD 20 Chann...

Страница 62: ...then the jumpers should be installed If the Zilog is going to generate an output clock to the cable then some of the jumpers should not be installed The Zilog Clock Select Jumpers are 2x8 the pin out...

Страница 63: ...PCI SIO4 User Manual General Standards Corporation 8302A Whitesburg Drive Huntsville AL 35802 Phone 256 880 8787 56...

Страница 64: ...PCI SIO4 User Manual General Standards Corporation 8302A Whitesburg Drive Huntsville AL 35802 Phone 256 880 8787 57...

Страница 65: ...educe the risk of software overhead Standard configuration of the SIO4 contains 32k byte deep FIFOs 6 0 2 INTERFACE CABLE General Standards Corporation can provide an interface cable for the SIO4 boar...

Страница 66: ...PCI SIO4 User Manual General Standards Corporation 8302A Whitesburg Drive Huntsville AL 35802 Phone 256 880 8787 59...

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