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PCI7510 Datasheet(PDF) 149 Page - Texas Instruments |
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PCI7510 Datasheet(HTML) 149 Page - Texas Instruments |
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149 / 234 page  7–8 7.10 CardBus CIS Base Address Register The internal CARDBUS input to the TSB43AB22 core is tied high such that this register returns 0s when read. See Table 7–9 for a complete description of the register contents. Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 Name CardBus CIS base address 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 CardBus CIS base address Type RW RW RW RW RW 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: CardBus CIS base address Offset: 18h Type: Read/Write, Read-only Default: 0000 0000h Table 7–9. CardBus CIS Base Address Register Description BIT FIELD NAME TYPE DESCRIPTION 31–11 CIS_BASE RW CIS base address. This field specifies the upper 21 bits of the 32-bit CIS base address. If CARDBUS is sampled high on a GRST, then this field is read-only, returning 0s when read. 10–4 CIS_SZ R CIS address space size. This field returns 0s when read, indicating that the CIS space requires a 2K-byte region of memory. 3 CIS_PF R CIS prefetch. Bit 3 returns 0 when read, indicating that the CIS is nonprefetchable. Furthermore, the CIS is a byte-accessible address space, and either a doubleword or 16-bit word access yields indeterminate results. 2–1 CIS_MEMTYPE R CIS memory type. This field returns 0s when read, indicating that the CardBus CIS base address register is 32 bits wide and mapping can be done anywhere in the 32-bit memory space. 0 CIS_MEM R CIS memory indicator. Bit 0 returns 0 when read, indicating that the CIS is mapped into system memory space. 7.11 CardBus CIS Pointer Register The internal CARDBUS input to the TSB43AB22 core is tied high such that this register returns 0s when read. Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 Name CardBus CIS pointer Type R R R R 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 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Name CardBus CIS pointer Type R R R R 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: CardBus CIS pointer Offset: 28h Type: Read-only Default: 0000 0000h |
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