WM8772 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'WM8772' PDF : 73 Pages View PDF
Production Data
WM8772EDS – 28 LEAD SSOP
SOFTWARE CONTROL INTERFACE OPERATION
The WM8772EDS is controlled using a 3-wire serial interface in software mode or pin
programmable in hardware mode.
The control mode is selected by the state of the MODE pin.
3-WIRE (SPI COMPATIBLE) SERIAL CONTROL MODE
MD/DM is used for the program data, MC/IWL is used to clock in the program data and ML/I2S is
used to latch the program data. MD/DM is sampled on the rising edge of MC/IWL. The 3-wire
interface protocol is shown in Figure 34.
ML/I2S
MC/IWL
MD/DM
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Figure 34 3-Wire SPI Compatible Interface
1. B[15:9] are Control Address Bits
2. B[8:0] are Control Data Bits
3. ML/I2S is edge sensitive – the data is latched on the rising edge of ML/I2S.
w
PD Rev 4.2 October 2005
29
Share Link: 
