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82NM10 Datasheet, PDF (583/671 Pages) Intel Corporation – Intel® NM10 Family Express Chipset | |||
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Intel HD Audio Controller Registers (D27:F0)
18.1.25 MMCâMSI Message Control Register
(Intel HD Audio ControllerâD27:F0)
Address Offset: 62hâ63h
Default Value: 0080h
Attribute:
Size:
RO, R/W
16 bits
Bit
Description
15:8
7
6:4
3:1
0
Reserved
64b Address Capability (64ADD) â RO. Hardwired to 1 indicating the ability to
generate a 64-bit message address
Multiple Message Enable (MME) â RO. Normally this is a R/W register. However,
since only 1 message is supported, these bits are hardwired to 000 = 1 message.
Multiple Message Capable (MMC) â RO. Hardwired to 0 indicating request for 1
message.
MSI Enable (ME) â R/W.
0 = an MSI may not be generated
1 = an MSI will be generated instead of an INTx signal.
18.1.26 MMLAâMSI Message Lower Address Register
(Intel HD Audio ControllerâD27:F0)
Address Offset: 64hâ67h
Default Value: 00000000h
Attribute:
Size:
RO, R/W
32 bits
Bit
Description
31:2 Message Lower Address (MLA) â R/W. Lower address used for MSI message.
1:0 Reserved.
18.1.27 MMUAâMSI Message Upper Address Register
(Intel HD Audio ControllerâD27:F0)
Address Offset: 68hâ6Bh
Default Value: 00000000h
Attribute:
Size:
R/W
32 bits
Bit
Description
31:0 Message Upper Address (MUA) â R/W. Upper 32-bits of address used for MSI
message.
18.1.28 MMDâMSI Message Data Register
(Intel HD Audio ControllerâD27:F0)
Address Offset: 6Châ6Dh
Default Value: 0000h
Attribute:
Size:
R/W
16 bits
Bit
Description
15:0 Message Data (MD) â R/W. Data used for MSI message.
Datasheet
583
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