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CS8427-IS 데이터 시트보기 (PDF) - Cirrus Logic

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CS8427-IS Datasheet PDF : 59 Pages
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CS8427
11.15 Receiver Error Mask (11h)
7
6
5
4
3
2
1
0
0
QCRCM
CCRCM
UNLOCKM
VM
CONFM
BIPM
PARM
The bits in this register serve as masks for the corresponding bits of the Receiver Error register. If a mask bit is set
to 1, the error is unmasked, meaning that its occurrence will appear in the receiver error register, will affect the RERR
pin, will affect the RERR interrupt, and will affect the current audio sample according to the status of the HOLD bit.
If a mask bit is set to 0, the error is masked, meaning that its occurrence will not appear in the receiver error register,
will not affect the RERR pin, will not affect the RERR interrupt, and will not affect the current audio sample. The
CCRC and QCRC bits behave differently from the other bits: they do not affect the current audio sample even when
unmasked. This register defaults to 00h.
11.16 Channel Status Data Buffer Control (12h)
7
6
5
4
3
2
1
0
0
0
BSEL
CBMR
DETCI
EFTCI
CAM
CHS
BSEL - Selects the data buffer register addresses to contain User data or Channel Status data
Default = ‘0’
0 - Data buffer address space contains Channel Status data
1 - Data buffer address space contains User data
CBMR - Control for the first 5 bytes of channel status “E” buffer
Default = ‘0’
0 - Allow D to E buffer transfers to overwrite the first 5 bytes of channel status data
1 - Prevent D to E buffer transfers from overwriting first 5 bytes of channel status data
DETCI - D to E C-data buffer transfer inhibit bit.
Default = ‘0’
0 - Allow C-data D to E buffer transfers
1 - Inhibit C-data D to E buffer transfers
EFTCI - E to F C-data buffer transfer inhibit bit.
Default = ‘0’
0 - Allow C-data E to F buffer transfers
1 - Inhibit C-data E to F buffer transfers
CAM - C-data buffer control port access mode bit
Default = ‘0’
0 - One byte mode
1 - Two byte mode
CHS - Channel select bit
Default = ‘0’
0 - Channel A information is displayed at the EMPH pin and in the receiver channel
status register. Channel A information is output during control port reads when
CAM is set to 0 (One Byte Mode)
1 - Channel B information is displayed at EMPH pin and in the receiver channel
status register. Channel B information is output during control port reads when
CAM is set to 0 (One Byte Mode)
36
DS477F1

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