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2 / 32 page Data Sheet Revision 1.2 Page 2 OX12PCI840 OXFORD SEMICONDUCTOR LTD. CONTENTS 1 PIN INFORMATION .....................................................................................................................4 2 PIN DESCRIPTIONS ....................................................................................................................5 3 CONFIGURATION & OPERATION ...............................................................................................8 4 PCI TARGET CONTROLLER .......................................................................................................9 4.1 OPERATION.......................................................................................................................................................................... 9 4.2 CONFIGURATION SPACE................................................................................................................................................... 9 4.2.1 PCI CONFIGURATION SPACE REGISTER MAP ......................................................................................................... 10 4.3 ACCESSING LOGICAL FUNCTIONS................................................................................................................................ 11 4.3.1 PCI ACCESS TO PARALLEL PORT .............................................................................................................................. 11 4.4 ACCESSING LOCAL CONFIGURATION REGISTERS .................................................................................................... 12 4.4.1 LOCAL CONFIGURATION AND CONTROL REGISTER ‘LCC’ (OFFSET 0X00) ......................................................... 12 4.4.2 MULTI-PURPOSE I/O CONFIGURATION REGISTER ‘MIC’ (OFFSET 0X04)............................................................. 13 4.4.3 LOCAL BUS TIMING PAR AMETER REGISTER 1 ‘LT1’ (OFFSET 0X08): ................................................................... 13 4.4.4 LOCAL BUS TIMING PAR AMETER/BAR SIZING REGISTER 2 ‘LT2’ (OFFSET 0X0C):............................................. 14 4.4.5 GLOBAL INTERRUPT STATUS AND CONTROL REGISTER ‘GIS’ (OFFSET 0X10)................................................. 15 4.5 PCI INTERRUPTS ............................................................................................................................................................... 16 4.6 POWER MANAGEMENT.................................................................................................................................................... 17 4.6.1 POWER MANAGEMENT USING MIO............................................................................................................................ 17 5 BI-DIRECTIONAL PARALLEL PORT..........................................................................................18 5.1 OPERATION AND MODE SELECTION............................................................................................................................. 18 5.1.1 SPP MODE ...................................................................................................................................................................... 18 5.1.2 PS2 MODE ...................................................................................................................................................................... 18 5.1.3 EPP MODE ...................................................................................................................................................................... 18 5.1.4 ECP MODE...................................................................................................................................................................... 18 5.2 PARALLEL PORT INTERRUPT ......................................................................................................................................... 18 5.3 REGISTER DESCRIPTION................................................................................................................................................. 19 5.3.1 PARALLEL PORT DATA REGISTER ‘PDR’................................................................................................................... 19 5.3.2 ECP FIFO ADDRESS / RLE ........................................................................................................................................... 19 5.3.3 DEVICE STATUS REGISTER ‘DSR’.............................................................................................................................. 19 5.3.4 DEVICE CONTROL REGISTER ‘DCR’ .......................................................................................................................... 20 5.3.5 EPP ADDRESS REGISTER ‘EPPA’ ............................................................................................................................... 20 5.3.6 EPP DATA REGISTERS ‘EPPD1-4’ ............................................................................................................................... 20 5.3.7 ECP DATA FIFO............................................................................................................................................................. 20 5.3.8 TEST FIFO...................................................................................................................................................................... 20 5.3.9 CONFIGURATION A REGISTER ................................................................................................................................... 20 5.3.10 CONFIGURATION B REGISTER ................................................................................................................................... 21 5.3.11 EXTENDED CONTROL REGISTER ‘ECR’ .................................................................................................................... 21 6 SERIAL EEPROM...................................................................................................................... 22 6.1 SPECIFICATION ................................................................................................................................................................. 22 6.2 EEPROM DATA ORGANISATION ..................................................................................................................................... 22 6.2.1 ZONE0: HEADER............................................................................................................................................................ 22 6.2.2 ZONE1: LOCAL CONFIGURATION REGISTERS ......................................................................................................... 23 6.2.3 ZONE2: IDENTIFICATION REGISTERS........................................................................................................................ 23 6.2.4 ZONE3: PCI CONFIGURATION REGISTERS ............................................................................................................... 23 6.2.5 ZONE4: FUNCTION ACCESS........................................................................................................................................ 25 7 OPERATING CONDITIONS ........................................................................................................26 |
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