WM8804 Datasheet, PDF (12/66 Pages) Wolfson Microelectronics plc – 1:1 Digital Interface Transceiver with PLL

WM8804
Frame
1
.........
Production Data
Frame
192
Subframe 1
Subframe 2
0 34 78
Sync
preamble
Aux
Audio Sample Word
27 28
31
V U C P 32 bits
Figure 6 S/PDIF Format
POWER UP CONFIGURATION
The operating mode of the WM8804 is dependent upon the state of SDIN, SCLK, SDOUT, CSB and
GPO0 when the device is powered up or a hardware reset occurs. Table 6 summarises the
configuration options.
HW RESET = 0
HW RESET = 1
SDIN
SWMODE
HWMODE
HWMODE / SWMODE Select
SWMODE
SDIN
HWMODE
N/A
SCLK
N/A
AIF_MS
SCLK
GPO
(TRANS_ERR)
SDOUT
N/A
AIF_CONF[0]
2-wire
GPO
3-wire
SDOUT
GPO
(NON_AUDIO)
CSB
2-wire 3-wire
Device
Address
N/A
TXSRC
2-wire
GPO
3-wire
CSB
GPO
(UNLOCK)
GPO0
2-wire/3-wire
Mode Select
AIF_CONF[1]
GPO
GPO
(GEN_FLAG)
Note: AIF_CONF[1:0] configures the audio interface when the device operates in hardware mode.
Refer to Table 16 for description of modes.
Table 6 Device Configuration at Power up or Hardware Reset
w
PD Rev 4.1 September 2007
12