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PCI7421 Datasheet(PDF) 279 Page - Texas Instruments |
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PCI7421 Datasheet(HTML) 279 Page - Texas Instruments |
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279 / 298 page  13−7 13.9 Smart Card Base Address Register 1−4 Each socket has its own base address register. For example, a device supports three Smart Card sockets uses three base address registers, BA1 (socket 0), BA2 (socket 1) and BA3 (socket 2). These registers are used by this function to determine where to forward a memory transaction to the Smart Card Control and Communication Register sets. Bits 31−12 of this register are read/write and allow the base address to be located anywhere in the 32-bit PCI memory space on 4-Kbyte boundaries and the window size is always 4K bytes. Bits 11−4 are read-only and always return 0s. Write transactions to these bits have no effect. Bit 3 (0b) specifies that these windows are nonprefetchable. Bits 2−1 (00b) specify that this memory window can allocate anywhere in the 32-bit address space. Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 Name Smart Card base address register 1−4 Type RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Name Smart Card base address register 1−4 Type RW RW RW RW R R R R R R R R R R R R Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Register: Smart Card base address register 1−4 Offset: 14h, 18h, 1Ch, and 20h Type: Read/Write, Read-only Default: 0000 0000h 13.10 Subsystem Vendor Identification Register This register is read-update and can be modified through the subsystem vendor ID alias register. Default value is 104Ch. This default value complies with the WLP (Windows Logo Program) requirements without BIOS or EEPROM configuration. All bits in this register are reset by GRST only. Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Name Subsystem vendor identification Type RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU Default 0 0 0 1 0 0 0 0 0 1 0 0 1 1 0 0 Register: Subsystem vendor identification Offset: 2Ch Type: Read/Update Default: 104Ch |
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