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PCI6421 Datasheet(PDF) 157 Page - Texas Instruments |
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PCI6421 Datasheet(HTML) 157 Page - Texas Instruments |
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157 / 204 page  7−13 7.20 Power Management Data Register The power management bridge support extension register provides extended power-management features not applicable to the flash media controller; thus, it is read-only and returns 0 when read. Bit 7 6 5 4 3 2 1 0 Name Power management data Type R R R R R R R R Default 0 0 0 0 0 0 0 0 Register: Power management data Offset: 4Bh Type: Read-only Default: 00h 7.21 General Control Register The general control register provides miscellaneous PCI-related configuration. See Table 7−14 for a complete description of the register contents. Bit 7 6 5 4 3 2 1 0 Name General control Type R R R RW RW RW RW RW Default 0 0 0 0 0 0 0 0 Register: General control Offset: 4Ch Type: Read/Write, Read-only Default: 00h Table 7−14. General Control Register BIT FIELD NAME TYPE DESCRIPTION 7 RSVD R Reserved. Bit 7 returns 0 when read. 6−5 ‡ INT_SEL RW Interrupt select. These bits are program the INTPIN register and set which interrupt output is used. This field is ignored if one of the USE_INTx terminals is asserted. 00 = INTA 01 = INTB 10 = INTC 11 = INTD 4 ‡ D3_COLD RW D3cold PME support. This bit sets and clears the D3cold PME support bit in the power management capabilities register. 3 RSVD R Reserved. Bit 3 returns 0 when read. 2 ‡ SM_DIS RW SmartMedia disable. Setting this bit disables support for SmartMedia cards. The flash media controller reports a SmardMedia card as an unsupported card if this bit is set. If this bit is set, then all of the SM_SUPPORT bits in the socket enumeration register are 0. 1 ‡ MMC_SD_DIS RW MMC/SD disable. Setting this bit disables support for MMC/SD cards. The flash media controller reports a MMC/SD card as an unsupported card if this bit is set. If this bit is set, then all of the SD_SUPPORT bits in the socket enumeration register are 0. 0 ‡ MS_DIS RW Memory Stick disable. Setting this bit disables support for Memory Stick cards. The flash media controller reports a Memory Stick card as an unsupported card if this bit is set. If this bit is set, then all of the MS_SUPPORT bits in the socket enumeration register are 0. ‡ One or more bits in this register are cleared only by the assertion of GRST. |
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