CS4630 datasheet(18/38 Pages) CIRRUS

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CS4630

DS445PP1

Subsystem ID

R/O Defaults to 0000h if EEPROM is not present,

otherwise loaded from the EEPROM.

Writable via Configuration Space Offset 0xFEh

or BA0:4B4h.

Subsystem Vendor ID

R/O Defaults to 0000h if EEPROM is not

present, otherwise loaded from the EEPROM.

Writable via Configuration Space Offset 0xFCh

or BA0:4B4h.

2Ch

Expansion ROM Base Address: R/O 00000000h, Unused

30h

Reserved: R/O 00000000h

34h

Reserved: R/O 00000000h

38h

Max_Lat: R/O 18h

24 x 0.25uS = 6 uS

Min_Gnt: R/O 04h

4 x 0.25uS = 1uS

Interrupt Pin:

R/O 01h, INTA used

Interrupt Line:

R/W, default 0

3Ch

PMC

Bit 15: PME# from D3cold: R/O 0(default) or

1(configurable)

Bit 14: PME# from D3hot: R/O 0(default) or

1(configurable)

Bit 13: PME# from D2: R/O 0(default) or

1(configurable)

Bit 12: PME# from D1: R/O 0(default) or

1(configurable)

Bit 11: PME# from D0: R/O 0(default) or

1(configurable)

Bit 10: D2 support: R/O 1

Bit 9: D1 support: R/O 1

Bit 8-6:Aux Current: R/O 000(default) or configurable

Bit 5: Device Specific init: R/O 1

Bit 4: Auxiliary power: R/O 0

Bit 3: PME# clock: R/O 0

Bit 2-0: Version: R/O 010

Next Item Pointer:

R/O 0h

Capability ID:

R/O 1h

40h

Data: R/O 0

PMCSR_BSE: R/O 0

PMCSR

Bit 15: PME# status: R/W 0

Bit 14-13: Data scale: R/O 00

Bit 12-9: Data select: R/O 0000

Bit 8: PME_En: R/W 0

Bit 7-2: Reserved: R/O 000000

Bit 1-0: Power state: R/W 00

44h

Dynamic Config Register

Bit 31: PME Support Shadow bit: R/W 0

Bit 30: Reserved: R/W 0

Bits 29-27: Aux Current Shadow bits: R/O 000

Bits 26-24: Reserved: R/O 000

Bits 23-16: Dynamic CNFG bits 23-16: R/W 0h

Dynamic Config Register

Bits 15-0: Dynamic CNFG bits 15-0: R/W 0h

F8h

Subsystem ID shadow register

0FEh W/O shadow Subsystem ID (0x2E)

Subsystem Vendor ID shadow register

0FCh W/O shadow Subsystem ID (0x2C)

FCh

Byte 3

Byte 2

Byte 1

Byte 0

Offset

Table 2. PCI Configuration Space (cont.)

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