W6692 Datasheet, PDF (89/104 Pages) Winbond – PCI Bus ISDN S/T-Controller

Preliminary Data Sheet
W6692 PCI ISDN S/T-Controller
These bits are read/write and are used to relocate the memory address space at 4K byte boundary.
Bits 11-4 Read_only
These bits are read_only and are hardwired to 0_.
Bit 3 Prefetchable Read_only
This bit is hardwired to 0 if EEPROM is empty. Otherwise, it is loaded from EEPROM.
Bits 2-1 Type Read_only
These two bits are hardwired to 00, indicating the memory range can locate anywhere in 32 bit address space.
Bit 0 Memory Space Indicator Read_only
This bit is hardwired to 0, indicating a memory space is allocated.
IO Base Address Register:
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
I/O Base Address
15 14 13 12 11 10 9
8
7
6
5
4
3
2 10
I/O Base Address
Hardwired to 0
01
This register can be used to relocate I/O address space to any location that is aligned to 256 bytes for mapping W6692's internal
registers.
Bits 31-8 IO Base Address R/W
These bits are read/write and are used to relocate the IO address space at 256 byte boundary.
Bits 7-2 Read_only
These bits are read_only and are hardwired to 0_.
Bit 1 Reserved Read_only
This bit is reserved and is hardwired to 0.
Bit 0 IO Space Indicator Read_only
This bit is hardwired to 1, indicating a I/O space is allocated.
8.4.6 Base Address Register 1
Read/Write
See the above section.
8.4.7 Subsystem/Subsystem Vendor ID Register
Read
PCI Configuration Address: 2C_H
Address 14_H
Address 2C_H
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Publication Release Date: Sep 30, 1999
Revision 0.9