Wolfson WM8804 - Pin Description

WM8804 Production Data
w
PD Rev 4.1 September 2007
4
PIN DESCRIPTION
PIN NAME
TYPE
DESCRIPTION
1 SCLK Digital In/Out Control interface clock / GPO in hardware control mode. See note 2.
2 GPO0 / SWIFMODE Digital In/Out General purpose digital output or selected functionality at hardware reset.
See note 2.
3 SDIN / HWMODE Digital Input Control interface data input and hardware/software mode select at hardware
reset. See note 2.
4 SDOUT / GPO2 Digital In/Out Control interface data output in 3-wire software control mode/ GPO in
hardware control mode or 2-wire software control mode. See note 2.
5 CSB / GPO1 Digital In/Out Chip select / GPO in hardware control mode or 2-wire software control
Mode. See note 2
6 RESETB Digital Input System reset (active low)
7 PVDD Supply PLL core supply
8 PGND Supply PLL ground
9 CLKOUT Digital Out High drive clock output at 64fs, 128fs, 256fs and 512fs
10 XOP Digital Output Crystal output
11 XIN Digital Input Crystal input
12 DOUT Digital Out Audio interface data output
13 DIN Digital In Audio interface data input
14 BCLK Digital In/Out Audio interface bit clock
15 LRCLK Digital In/Out Audio interface left/right word clock
16 MCLK Digital In/Out Master clock input or output
17 TX0 Digital Out S/PDIF transmit channel
18 DGND Supply Digital ground
19 DVDD Supply Digital core supply
20 RX0 Digital In S/PDIF receive channel
Notes:
1. Digital input pins have Schmitt trigger input buffers.
2. Refer to Table 6 Device Configuration at Power up or Hardware Reset