WM8775SEDSSLASHR datasheet(20/39 Pages) WOLFSON

No de pièce	WM8775SEDS/R

Description	24-bit, 96kHz ADC with 4 Channel I/P Multiplexer

PDF	39 Pages

Scroll/Zoom	100%

Fabricant	WOLFSON [Wolfson Microelectronics plc]

Site Internet	http://www.wolfsonmicro.com

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20 / 39 page

WM8775

Production Data

PD Rev 4.1, June 2006

Figure 19 DSP/PCM Mode Audio Interface (mode B, LRP=0, Slave)

CONTROL INTERFACE OPERATION

The WM8775 is controlled using a 3-wire serial interface in a SPI compatible configuration or

a 2-wire serial interface mode. The interface type is selected by the MODE pin as shown in

Table 9.

MODE

Control Mode

2 wire interface

3 wire interface

Table 9 Control Interface Selection via MODE pin

3-WIRE (SPI COMPATIBLE) SERIAL CONTROL MODE

DI is used for the program data, CL is used to clock in the program data and CE is used to latch the

program data. DI is sampled on the rising edge of CL. The 3-wire interface protocol is shown in

Figure 20.

Figure 20 3-Wire SPI Compatible Interface

B[15:9] are Control Address Bits

B[8:0] are Control Data Bits

CE is edge sensitive – the data is latched on the rising edge of CE.

B15

B14

B13

B12

B11

B10

WM8775SEDS/R Fiches technique(PDF) 20 Page - Wolfson Microelectronics plc