Intel PXA26X User Manual Page 484

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13-22 Intel® PXA26x Processor Family Developer’s Manual
AC97 Controller Unit
13.8.3.3 Global Status Register (GSR)
Table 13-9. Global Status Register (Sheet 1 of 2)
Physical Address
4050_001C
GSR Register AC97
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reserved
CDONE
SDONE
Reserved
RDCS
BIT3SLT12
BIT2SLT12
BIT1SLT12
SECRES
PRIRES
SCR
PCR
MINT
POINT
PIINT
Reserved
MOINT
MIINT
GSCI
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bits Name Description
31:20 Reserved
19 CDONE
COMMAND DONE (CDONE):
0 – ACUNIT has not sent command address and data to the codec.
1 – ACUNIT has sent command address and data to the codec.
This bit is cleared by software writing a ‘1’ to this location (interruptible)
18 SDONE
STATUS DONE (SDONE):
0 – ACUNIT has not received status address and data from the codec.
1 – ACUNIT has received status address and data from the codec.
This bit is cleared by software writing a ‘1’ to this location (interruptible)
17:16 Reserved
15 RDCS
READ COMPLETION STATUS:
This bit indicates the status of codec read completions.
0 – The codec read completed normally
1 – The codec read resulted in a timeout.
The bit remains set until cleared by software. This bit is cleared by software writing a ‘1’ to
this location.
14 BIT3SLT12
BIT 3 OF SLOT 12:
Display Bit 3 of the most recent valid slot 12
13 BIT2SLT12
BIT 2 OF SLOT 12:
Display Bit 2 of the most recent valid slot 12
12 BIT1SLT12
BIT 1 OF SLOT 12:
Display Bit 1 of the most recent valid slot 12
11 SECRES
SECONDARY RESUME INTERRUPT:
0 – A resume event has not occurred on the SDATA_IN_1.
1 – A resume event occurred on the SDATA_IN_1.
This bit is cleared by software writing a ‘1’ to this location (interruptible).
10 PRIRES
PRIMARY RESUME INTERRUPT:
0 – A resume event has not occurred on the SDATA_IN_0.
1 – A resume event occurred on the SDATA_IN_0.
This bit is cleared by software writing a ‘1’ to this location (interruptible).
9SCR
SECONDARY CODEC READY (SCR):
Reflects the state of the codec ready bit in SDATA_IN_1 (interruptible)
8PCR
PRIMARY CODEC READY (PCR):
Reflects the state of the codec ready bit in SDATA_IN_0 (interruptible)
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