WM1811A datasheet(202/328 Pages) WOLFSON

Part #	WM1811A

Description	Multi-Channel Audio Hub CODEC for Smartphones

PDF	328 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

Logo

202 / 328 page

WM1811A

Production Data

PD, November 2013, Rev 4.1

202

The sequence of signals associated with a single register read operation is illustrated in Figure 73.

Figure 73 Control Interface 2-wire (I2C) 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 121.

Note that, for multiple write and multiple read operations, the auto-increment option must be enabled.

This feature is enabled by default, as noted inTable 122.

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 WM1811A

[Grey field]

Data flow from WM1811A to bus master

Table 121 Control Interface Terminology

Figure 74 Single Register Write to Specified Address

Figure 75 Single Register Read from Specified Address

WM1811A Datasheet(PDF) 202 Page - Wolfson Microelectronics plc