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3.4.5 Function 2 (OHCI 1394) Subsystem Identification
The subsystem identification register is used for system and option card identification purposes. This register can
be initialized from the serial EEPROM or programmed via the subsystem access register at offset F8h in the PCI
configuration space (see Section 7.25, Subsystem Access Register). See Table 7−22 for a complete description of
the register contents.
Write access to the subsystem access register updates the subsystem identification registers identically to
OHCI-Lynx. The contents of the subsystem access register are aliased to the subsystem vendor ID and subsystem
ID registers at Function 2 PCI offsets 2Ch and 2Eh, respectively. The system ID value written to this register may also
be read back from this register. See Table 7−22 for a complete description of the register contents.
3.4.6 Function 3 (Flash Media) Subsystem Identification
The subsystem identification register is used for system and option card identification purposes. This register can
be initialized from the serial EEPROM or programmed via the subsystem access register at offset 50h in the PCI
configuration space (see Section 11.22, Subsystem Access Register). See Table 11−15 for a complete description
of the register contents.
The contents of the subsystem access register are aliased to the subsystem vendor ID and subsystem ID registers
at Function 3 PCI offsets 2Ch and 2Eh, respectively. See Table 11−15 for a complete description of the register
contents.
3.4.7 Function 4 (SD Host) Subsystem Identification
The subsystem identification register is used for system and option card identification purposes. This register can
be initialized from the serial EEPROM or programmed via the subsystem access register at offset 8Ch in the PCI
configuration space (see Section 12.23, Subsystem Access Register). See Table 12−16 for a complete description
of the register contents.
The contents of the subsystem access register are aliased to the subsystem vendor ID and subsystem ID registers
at Function 4 PCI offsets 2Ch and 2Eh, respectively. See Table 12−16 for a complete description of the register
contents.
3.4.8 Function 5 (Smart Card) Subsystem Identification
The subsystem identification register is used for system and option card identification purposes. This register can
be initialized from the serial EEPROM or programmed via the subsystem access register at offset 50h in the PCI
configuration space (see Section 13.23, Subsystem ID Alias Register). See Table 13−14 for a complete description
of the register contents.
The contents of the subsystem access register are aliased to the subsystem vendor ID and subsystem ID registers
at Function 5 PCI offsets 2Ch and 2Eh, respectively. See Table 13−14 for a complete description of the register
contents.
3.5 PC Card Applications
The PCI7x21/PCI7x11 controller supports all the PC Card features and applications as described below.
• Card insertion/removal and recognition per the PC Card Standard (release 8.1)
• Speaker and audio applications
• LED socket activity indicators
• PC Card controller programming model
• CardBus socket registers