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PCI7421 Datasheet(PDF) 206 Page - Texas Instruments |
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PCI7421 Datasheet(HTML) 206 Page - Texas Instruments |
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206 / 298 page  8−26 8.28 Initial Channels Available High Register The initial channels available high register value is loaded into the corresponding bus management CSR register on a system (hardware) or software reset. See Table 8−20 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 Initial channels available high Type RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW Default 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Name Initial channels available high Type RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW Default 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Register: Initial channels available high Offset: B4h Type: Read/Write Default: FFFF FFFFh Table 8−20. Initial Channels Available High Register Description BIT FIELD NAME TYPE DESCRIPTION 31−0 InitChanAvailHi RW This field is reset to FFFF_FFFFh on a system (hardware) or software reset, and is not affected by a 1394 bus reset. The value of this field is loaded into the CHANNELS_AVAILABLE_HI CSR register upon a GRST, PRST, or a 1394 bus reset. 8.29 Initial Channels Available Low Register The initial channels available low register value is loaded into the corresponding bus management CSR register on a system (hardware) or software reset. See Table 8−21 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 Initial channels available low Type RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW Default 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Name Initial channels available low Type RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW Default 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Register: Initial channels available low Offset: B8h Type: Read/Write Default: FFFF FFFFh Table 8−21. Initial Channels Available Low Register Description BIT FIELD NAME TYPE DESCRIPTION 31−0 InitChanAvailLo RW This field is reset to FFFF_FFFFh on a system (hardware) or software reset, and is not affected by a 1394 bus reset. The value of this field is loaded into the CHANNELS_AVAILABLE_LO CSR register upon a GRST, PRST, or a 1394 bus reset. |
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