876784 Intel, 876784 Datasheet - Page 744
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876784
Manufacturer Part Number
876784
Description
Manufacturer
Intel
Datasheet
1.876784.pdf
(848 pages)
Specifications of 876784
Lead Free Status / RoHS Status
Compliant
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19.2.22
19.2.23
19.2.24
744
CORBST—CORB Status Register
(Intel
Memory Address:HDBAR + 4Dh
Default Value:
CORBSIZE—CORB Size Register
Intel
Memory Address:HDBAR + 4Eh
Default Value:
RIRBLBASE—RIRB Lower Base Address Register
(Intel
Memory Address:HDBAR + 50h
Default Value:
31:7
7:1
7:4
3:2
1:0
6:0
Bit
Bit
Bit
0
®
Reserved.
CORB Memory Error Indication (CMEI) — R/WC.
0 = Error Not detected.
1 = The controller has detected an error in the path way between the controller and
NOTE: Software can clear this bit by writing a 1 to it. However, this type of error leaves
CORB Size Capability — RO. Hardwired to 0100b indicating that the ICH7 only supports
a CORB size of 256 CORB entries (1024B).
Reserved.
CORB Size — RO. Hardwired to 10b which sets the CORB size to 256 entries (1024B).
RIRB Lower Base Address — R/W. This field is the lower address of the Response
Input Ring Buffer, allowing the RIRB base address to be assigned on any 128-B
boundary. This register field must not be written when the DMA engine is running or the
DMA transfer may be corrupted.
RIRB Lower Base Unimplemented Bits — RO. Hardwired to 0. This required the RIRB to
be allocated with 128-B granularity to allow for cache line fetch optimizations.
®
®
High Definition Audio Controller—D27:F0)
High Definition Audio Controller—D27:F0)
High Definition Audio Controller—D27:F0)
memory. This may be an ECC bit error or any other type of detectable data error
which renders the command data fetched invalid.
the audio subsystem in an un-viable state and typically requires a controller
reset by writing a 0 to the Controller Reset # bit (HDBAR + 08h: bit 0).
00h
42h
00000000h
Intel® High Definition Audio Controller Registers (D27:F0)
Description
Description
Description
Size:
Attribute:
Size:
Attribute:
Size:
Attribute:
Intel
R/WC
8 bits
RO
8 bits
R/W, RO
32 bits
®
ICH7 Family Datasheet
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