WM8904ECSSLASHR datasheet(124/188 Pages) WOLFSON

No de pièce	WM8904ECS/R

Description	Ultra Low Power CODEC for Portable Audio Applications

PDF	188 Pages

Scroll/Zoom	100%

Fabricant	WOLFSON [Wolfson Microelectronics plc]

Site Internet	http://www.wolfsonmicro.com

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WM8904

Pre-Production

PP, Rev 3.3, September 2012

124

Figure 62 Control Interface Register Read

The Control Interface also supports other register operations, as listed above. The interface protocol

for these operations is summarised below. The terminology used in the following figures is detailed in

Table 84.

Note that multiple write and multiple read operations are supported using the auto-increment mode.

This feature enables the host processor to access sequential blocks of the data in the WM8904

TERMINOLOGY

DESCRIPTION

Start Condition

Repeated start

Acknowledge (SDA Low)

¯¯

Not Acknowledge (SDA High)

Stop Condition

R/W

¯¯

ReadNotWrite

0 = Write

1 = Read

[White field]

Data flow from bus master to WM8904

[Grey field]

Data flow from WM8904 to bus master

Table 84 Control Interface Terminology

Figure 63 Single Register Write to Specified Address

Figure 64 Single Register Read from Specified Address

Figure 65 Multiple Register Write to Specified Address using Auto-increment

WM8904ECS/R Fiches technique(PDF) 124 Page - Wolfson Microelectronics plc