WM8805
Production Data
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
11
Do not use channel number
7:6
CHNUM2[1:0]
00
Channel Number for Subframe 2
CHNUM2
Channel Status Bits[23:22]
00
01
10
11
Do not use channel number
Send to Left Channel
Send to Right Channel
Do not use channel number
R21
SPDTX4
15h
3:0
5:4
FREQ[3:0]
0001
11
Indicated Sampling Frequency
Refer to S/PDIF specification (IEC 60958-3) for
full details.
0001 = Sampling Frequency not indicated.
Clock Accuracy of Transmitted Clock
00 = Level II
CLKACU[1:0]
01 = Level I
10 = Level III
11 = Interface frame rate not matched to
sampling frequency.
6
7
TXSRC
1
0
S/PDIF Transmitter Data Source
0 = S/PDIF received data.
1 = Audio Interface received data
TXSTATSRC
S/PDIF Transmitter Channel Status Data
Source
0 = Received channel status data
1 = Transmit channel status registers
Note : Only used if TXSRC=0
Maximum Audio Sample Word Length
0 = 20 bits
R22
SPDTX5
16h
0
MAXWL
1
1 = 24 bits
3:1
TXWL[2:0]
101
Audio Sample Word Length
Used with MAXWL to indicate Tx word length
000 = Word Length Not Indicated
TXWL[2:0]
001
MAXWL==1
20 bits
MAXWL==0
16 bits
010
22 bits
18 bits
100
23 bits
19 bits
101
24 bits
20 bits
110
21 bits
17 bits
All other combinations reserved
7:4
ORGSAMP
[3:0]
0000
Original Sampling Frequency
Refer to S/PDIF specification (IEC 60958-3) for
full details.
R23
GPO01
17h
3:0
7:4
GPO0[3:0]
GPO1[3:0]
0000
0111
Flags and Status bits available on GPO pins
0000 = INT_N
0001 = V
0010 = U
R24
GPO23
18h
3:0
7:4
GPO2[3:0]
GPO3[3:0]
0111
0101
0011 = C
0100 = TRANS_ERR
0101 = SFRM_CLK
0110 = 192BLK
0111 = UNLOCK
1000 = NON_AUDIO
R25
3:0
7:4
GPO4[3:0]
GPO5[3:0]
0110
0011
GPO45
19h
R26
3:0
GPO6[3:0]
0010
PD Rev 4.1 September 07
60
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
