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Rev NR

4.1.2 Local Configuration Registers

The Local Configuration registers give information on the Local side implementation. These include the required
memory size. The SIO8BX2 memory size is initialized to 4k bytes. All other Local Registers initialize to the default
values described in the PCI9056 Manual.

4.1.3 Runtime Registers

The Runtime registers consist of mailbox registers, doorbell registers, and a general-purpose control register. The
mailbox and doorbell registers are not used and serve no purpose on the SIO8BX2. All other Runtime Registers
initialize to the default values described in the PCI9056 Manual.

4.1.4 DMA Registers

The Local DMA registers are used to setup the DMA transfers to and from the on-board FIFOs.  DMA is
supported only to the four FIFO locations.  The SIO8BX2 supports both Demand (DREQ# controlled) and Non-
Demand mode DMA.  Both Channel 0 and Channel 1 DMA are supported.

4.1.4.1 DMA Channel Mode Register: (PCI 0x80 / 0x94)

The DMA Channel Mode register must be setup to match the hardware implementation.

Bit

Description

Value

Notes

D1:0

Local Bus Width

11 = 32 bit
00 = 8 bit

Although the serial FIFOs only contain 8 bits of
data, the register access is still a 32bit access. It is
possible to “pack” the data by setting the Local
Bus Width to 8, but this is only guaranteed to
work with Non-Demand Mode DMA

D5:2

Internal Wait States

0000 = Unused

D6

Ready Input Enable

1 = Enabled

D7

Bterm# Input Enabled

0 = Unused

D8

Local Burst Enable

1 = Supported

Bursting allows fast back-to-back accesses to the
FIFOs to speed throughput

D9

Chaining Enable (Scatter
Gather DMA)

X

DMA source addr, destination addr, and byte
count are loaded from memory in PCI Space.

D10

Done Interrupt Enable

X

DMA Done Interrupt

D11

Local Addressing Mode

1 = No Increment

DMA to/from FIFOs only

D12

Demand Mode Enable

X

Demand Mode DMA is supported for FIFO
accesses on the SIO4BXR.
(See Section 3.3)

D13

Write & Invalidate Mode

X

D14

DMA EOT Enable

0 = Unused

D15

DMA Stop Data Transfer
Enable

0 = BLAST
terminates DMA

D16

DMA Clear Count Mode

0 = Unused

D17

DMA Channel Interrupt
Select

X

D31:18

Reserved

0

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Содержание PCIe4-SIO8BX2

Страница 1: ...S232 SOFTWARE CONFIGURABLE TRANSCEIVERS AND 32K BYTE FIFO BUFFERS 512K BYTE TOTAL RS 485 RS 422 V 11 RS 232 V 28 General Standards Corporation 8302A Whitesburg Drive Huntsville AL 35802 Phone 256 880...

Страница 2: ...Corporation assumes no responsibility for any errors that may exist in this document No commitment is made to update or keep current the information contained in this document General Standards Corpor...

Страница 3: ...ge Digital Interface Circuits EIA order number EIA RS 422A EIA 485 Standard for Electrical Characteristics of Generators and Receivers for Use in Balanced Digital Multipoint Systems EIA order number E...

Страница 4: ...03C 0X004C 8 2 1 9 CHANNEL SYNC DETECT BYTE LOCAL OFFSET 0X0050 0X0054 0X0058 0X005C 9 2 1 10 INTERRUPT REGISTERS 9 2 1 10 1 INTERRUPT CONTROL LOCAL OFFSET 0X0060 10 2 1 10 2 INTERRUPT STATUS CLEAR LO...

Страница 5: ...1 1 PCI CONFIGURATION REGISTERS 26 4 1 2 LOCAL CONFIGURATION REGISTERS 27 4 1 3 RUNTIME REGISTERS 27 4 1 4 DMA REGISTERS 27 4 1 4 1 DMA CHANNEL MODE REGISTER PCI 0X80 0X94 27 CHAPTER 5 HARDWARE CONFI...

Страница 6: ...ent RS422 RS485 RS232 Serial Channels Serial Mode Protocols include Asynchronous Monosync Bisync SDLC HDLC Nine Bit and IEEE 802 3 Synchronous Serial Data Rates up to 10Mbps Asynchronous Serial Data R...

Страница 7: ...ls The USC provides many advanced features including Completely independent transmitter and receiver operation Odd Even Space Mark parity Two 16 bit or one 32 bit CRC polynomial Eight Data Encoding me...

Страница 8: ...sfers to efficiently move data to and from the board 1 5 General Purpose IO Since some signals may not be used in all applications the SIO8BX2 provides the flexibility to remap unused signals to be us...

Страница 9: ...0x0340 0x03FF Reserved 0x0400 0x043F 0x0400 Channel 4 USC Registers The GSC Firmware Registers are detailed in Section 2 1 The USC Registers are briefly touched on in Section 2 2 of this manual but ar...

Страница 10: ...h 3 Pin Status 000000XX 0x009C D32 Read Only Ch 4 Pin Status 000000XX 0x00A0 D32 Read Write Programmable Osc RAM Addr 00000000 0x00A4 D32 Read Write Programmable Osc RAM Data 1 00000000 0x00A8 D32 Rea...

Страница 11: ...e FIFO Write to Rx FIFO FIFO Read from Tx FIFO D28 27 FIFO Allocation Unused D26 RESERVED D25 LED D1 D6 1 Turn on Red LED D1 D6 D24 LED D1 D6 1 Turn on Green LED D1 D6 D23 Timestamp Clear 0 timestamp...

Страница 12: ...th firmware rev 106 The timestamp will add a 24 bit timestamp value for each data value in the data stream Timestamp is controlled D31 24 RESERVED D23 0 Current timestamp value 2 1 5 Channel TX Almost...

Страница 13: ...IFO writes and Receive FIFO reads D31 8 RESERVED D7 0 Channel FIFO Data 2 1 8 Channel Control Status Local Offset 0x001C 0x002C 0x003C 0x004C The Channel Control Status Register provides the reset fun...

Страница 14: ...est Channel Sync Detect IRQ will be generated The interrupt source must be enabled in the Interrupt Control Register in order for an interrupt to be generated 2 1 10 Interrupt Registers There are 32 o...

Страница 15: ...d the interrupt will occur when the FIFO transitions from NOT EMPTY to EMPTY Likewise if Tx FIFO Empty Interrupt is set as Falling Edge Triggered the interrupt will occur when the FIFO transitions fro...

Страница 16: ...figures the Output source for the Clocks Data RTS and DCD outputs 31 30 29 28 27 26 25 24 Transceiver Enable Termination Disable Loopback Enable DCE DTE Mode Transceiver Protocol Mode 23 22 21 20 19 1...

Страница 17: ...ignals internal to the board D22 Reserved D21 19 Cable TxD Output Control Allows TxD output to be used as a general purpose output D21 D20 D19 TxD Source 0 0 X USC_TxD 0 0 0 Output 0 0 1 1 Output 1 1...

Страница 18: ...t from IO Connector DCD 0X Input 1 0 Reserved XX Don t Care 1 1 Output to IO Connector 1X Output D10 9 USC_CTS Direction Setup If CTS is used as GPIO set this field to 00 and set Pin Source Register D...

Страница 19: ...SC IO Control Reg D2 0 to ensure the signal is not being driven by both the USC and the FPGA D2 D1 D0 USC_TxC Source USC IOCR D5 D3 Setup 0 0 0 Prog Clock 000 Input 0 0 1 Inverted Prog Clock 000 Input...

Страница 20: ...15 0 Number of words in Tx FIFO 2 1 15 FIFO Size Register Local Offset 0x00E0 0x00E4 0x00E8 0x00EC The FIFO Size Registers display the sizes of the installed data FIFOs This value is calculated at pow...

Страница 21: ...r s Manual These manuals may be obtained directly from Zilog www zilog com or copies of these manuals may be downloaded from the General Standards website www generalstandards com Some specific setup...

Страница 22: ...nce the user interface to the USC is an 8 bit interface the software only needs to set the lower byte to 0x00 hardware implementation will program the upper byte of the BCR 2 2 3 USC Data Transfer Alt...

Страница 23: ...R Hi Lo Channel Control Register 0x11 0x10 CMCR Hi Lo Clock Mode Control Register 0x13 0x12 HCR Hi Lo Hardware Configuration Register 0x17 0x16 IOCR Hi Lo I O Control Register 0x19 0x18 ICR Hi Lo Inte...

Страница 24: ...Channel Reset The FIFO resets allow each individual FIFO Tx and Rx to be reset independently Setting the FIFO reset bit will clear the FIFO immediately 3 2 FIFOs Deep transmit and receive FIFOs are t...

Страница 25: ...O counters report the exact number of data words currently in each FIFO By utilizing this information the user can determine the exact amount of data which can safely be transferred to the transmit FI...

Страница 26: ...LL with postdivider per channel This allows each channel to have a unique programmable clock ProgClk The IO Connector Clocks consist of a Receive Clock RxC a Transmit Clock TxC and a bidirectional Aux...

Страница 27: ...method will be to program the channel programmable clock to be 16 32 64 times the desired baudrate and use this clock as the source for the TxC RxC pin Section 2 1 11 describes how to program the Pin...

Страница 28: ...ut configuration for each signal The DCD and AuxC direction is set in the Pin Source register fields independent of DCE DTE mode Signal DTE DCE TxC TxC Out RxC In RxC RxC In TxC Out TxD TxD Out RxD In...

Страница 29: ...I9056 interrupts The single Local Interrupt is made up of the interrupt sources described in Section 2 1 10 In addition the Zilog USC contains a number of interrupt sources which are combined into a s...

Страница 30: ...may be used to determine how much space is available for DMA so that the FIFO will never over under run Demand Mode DMA requires less software control but runs the risk of losing data due to an incom...

Страница 31: ...pts to filter the information from the PCI9056 manual to provide the necessary information for a SIO8BX2 specific driver The SIO8BX2 uses an on board serial EEPROM to initialize many of the PCI9056 re...

Страница 32: ...I 0x80 0x94 The DMA Channel Mode register must be setup to match the hardware implementation Bit Description Value Notes D1 0 Local Bus Width 11 32 bit 00 8 bit Although the serial FIFOs only contain...

Страница 33: ...er J1 Jumper J1 allows the user to set the Board ID in the GSC Board Status Register See Section 2 1 3 This is useful to uniquely identify a board if more than one SIO8BX2 card is in a system When the...

Страница 34: ...d 5 3 LEDs Ten green LEDs D1 D10 are accessible via software five to each 4 channel board Refer to Figure 5 2 for these LED locations LED D1 D6 is controlled from the Board Control Register LED D1 D6...

Страница 35: ...2 TXC2 RXC2 TXC2 67 TXD2 RXD2 TXD2 RXD2 15 AUXC2 Unused Hi 66 RXD2 TXD2 Unused Hi 16 AUXC2 AUXC2 65 RXD2 TXD2 RXD2 TXD2 17 Unused Unused 64 DCD2 Unused Hi 18 Unused Unused 63 DCD2 DCD2 19 RTS2 CTS2 Un...

Страница 36: ...RXD4 TXD4 145 AUXC4 AUXC4 97 DCD4 Unused Hi 144 Unused Unused 98 DCD4 DCD4 143 Unused Unused 99 CTS4 RTS4 Unused Hi 142 RTS4 CTS4 Unused Hi 100 CTS4 RTS4 CTS4 RTS4 141 RTS4 CTS4 RTS4 CTS4 101 TXD7 RX...

Страница 37: ...specific application A standard cable is available which will breakout the serial channels into eight DB25 connectors Shielded cable options are also available Please consult our sales department for...

Страница 38: ...ur clocks To implement this a second CLOCK RAM block was added CLOCK RAM1 programs the first CY22393 using CLKA Ch1_Clk CLKB Ch2_Clk CLKC Ch3_Clk and CLOCK_RAM2 programs the second CY22393 using CLKD...

Страница 39: ...ck from the programmable oscillator to provide for slow baud rates Each 4 bit field will allow a post divider of 2 n For example if the post divider value 0 the input clock is not post divided A value...

Страница 40: ...ved 0x00 0x1A Reserved 0xE9 0x1B Reserved 0x08 0x1C 0x3F Reserved Unused 0x00 0x40 PLL1 Q Setup0 0x00 0x41 PLL1 P Lo 0 Setup0 0x00 0x41 PLL1 Enable PLL1 P Hi Setup0 0x00 0x43 PLL1 Q Setup1 0x00 0x44 P...

Страница 41: ...000101 D31 16 HW Board Rev 0xE00 PCIe4 SIO8BX2 Rev NR D31 1 Features Register Present D30 1 Complies with this standard D29 1 66MHz PCI bus interface 0 33MHz PCI bus interface D28 1 64 bit PCI bus int...

Страница 42: ...Pin Source Change 0x02 Multi Protocol support 0x03 Common Internal External FIFO Support 0x04 FIFO Latched Underrun Overrun Level 0x05 Demand mode DMA Single Cycle for Tx 0x06 DMA_Single_Cycle_Dis up...

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