Intel® HD Audio (D27:F0)
10.3.27 IC—Immediate Command Register
Memory Address:
Default Value:
LBAR + 60h
00000000h
Attribute:
Size:
R/W
32 bits
Default
Bit
and
Description
Access
Immediate Command Write: The command to be sent to the codec by
the Immediate Command mechanism is written to this register. The
command stored in this register is sent out over the link during the next
available frame after a 1 is written to the ICB bit (LBAR + 68h: bit 0).
0
R/W
31:0
10.3.28 IR—Immediate Response Register
Memory Address:
Default Value:
LBAR + 64h
00000000h
Attribute:
Size:
RO
32 bits
Default
Bit
and
Description
Access
Immediate Response Read (IRR): This register contains the response
received from a codec resulting from a command sent by the Immediate
Command mechanism.
0
RO
31:0
If multiple codecs responded in the same time, there is no assurance as to
which response will be latched. Therefore, broadcast-type commands must
not be issued by the Immediate Command mechanism.
Datasheet
159
INTEL [ INTEL ]
