WM8805 Datasheet, PDF (12/66 Pages) Wolfson Microelectronics plc – 8:1 Digital Interface Transceiver with PLL

WM8805
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 WM8805 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.
SDIN
SCLK
HW RESET = 0
SWMODE
HWMODE
HWMODE / SWMODE Select
N/A
AIF_MS
SDOUT
N/A
AIF_CONF[0]
CSB
GPO0
2-wire 3-wire
Device
Address
N/A
TXSRC
2-wire/3-wire
Mode Select
AIF_CONF[1]
HW RESET = 1
SWMODE
SDIN
HWMODE
N/A
SCLK
GPO
(TRANS_ERR)
2-wire
GPO
3-wire
SDOUT
GPO
(NON_AUDIO)
2-wire
3-wire
GPO
GPO
CSB
(UNLOCK)
GPO
GPO
(GEN_FLAG)
Table 6 Device Configuration at Power up or Hardware Reset
Note: AIF_CONF[1:0] configures the audio interface when the device operates in hardware mode.
Refer to Table 16 for description of modes.
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PD, Rev 4.5, March 2009
12