WM8804 Datasheet, PDF (58/66 Pages) Wolfson Microelectronics plc – 1:1 Digital Interface Transceiver with PLL

WM8804
REGISTER BIT
ADDRESS
10h
5:4
(read-only)
R17
0
RXCHAN5
11h
(read-only)
3:1
7:4
R18
0
SPDTX1
12h
1
2
5:3
7:6
R19
7:0
SPDTX2
13h
LABEL
CLKACU[1:0]
MAXWL
RXWL[2:0]
ORGSAMP
[3:0]
CON/PRO
AUDIO_N
CPY_N
DEEMPH[2:0]
CHSTMODE
[1:0]
CATCODE
[7:0]
DEFAULT
Production Data
DESCRIPTION
11
Clock Accuracy of Received Clock
00 = Level II
01 = Level I
10 = Level III
11 = Interface frame rate not matched to
sampling frequency.
1
Maximum Audio Sample Word Length
0 = 20 bits
1 = 24 bits
Note: see table in description of bits 3:1 of this
register.
000
0000
0
0
0
000
00
00000000
Audio Sample Word Length
000: Word length not indicated
RXWL[2:0] MAXWL==1 MAXWL==0
001
20 bits
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 are reserved and should
not be used.
Original Sampling Frequency
Refer to S/PDIF specification (IEC 60958-3) for
full details.
Use Of Channel Status Block
0 = Consumer Mode
1 = Professional Mode (not supported by
WM8804).
Linear PCM Identification
0 = S/PDIF transmitted data is audio PCM.
1 = S/PDIF transmitted data is not audio PCM.
Copyright Information
0 = Transmitted data has copyright asserted.
1 = Transmitted data has no copyright
assertion.
Additional Format Information
000 = Data from Audio interface has no pre-
emphasis.
001 = Data from Audio interface has pre-
emphasis.
All other modes are reserved and should not
be used.
Channel Status Mode
00 = Only valid mode for consumer
applications.
Category Code
Refer to S/PDIF specification (IEC 60958-3) for
full details.
00h indicates “general” mode.
w
PD Rev 4.1 September 2007
58