WM8961 datasheet(99/116 Pages) WOLFSON

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WM8961

Pre-Production

PP, August 2009, Rev 3.1

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R88 (58h)

Write

Sequencer 2

WSEQ_EOS

Writes to the EOS field in the current write sequencer memory location

(specified by last write to WSEQ_WRITE_INDEX).

0 – not end of current sequence

1 – end of current sequence. The write sequencer will stop after this

write has been completed.

7:0

WSEQ_ADDR[7:0]

0000_0000 This data will be written into the Register Address field of the current

write sequencer memory location (specified by

WSEQ_WRITE_INDEX).

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R89 (59h)

Write

Sequencer 3

7:0

WSEQ_DATA[7:0]

0000_0000 The Data which is to be used to overwrite the current register bits.

Only bits [WSEQ_DATA_WIDTH:0] of this register are used. The

remaining bits should be set to 0.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R90 (5Ah)

Write

Sequencer 4

WSEQ_ABORT

Quit the current sequence and return control of the device back

to the serial control interface.

WSEQ_START

Starts the write sequencer. The write sequencer will start

writing the contents of its memory from WSEQ_START_INDEX

until it reaches an end-of-sequence flag.

Note that this bit will be reset by the Write Sequencer state

machine at the end of each sequence.

5:0

WSEQ_START_INDEX[5:0]

00_0000

Sequence Start Index. Gives the location in memory that the

Write Sequencer will start executing from.

00_0000 -> 01_1111 : locations in RAM portion of memory

10_0000 -> 11_0000 : location in ROM portion of memory.

11_0001 -> 11_1111 : reserved.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R91 (5Bh)

Write

Sequencer 5

6:4

WSEQ_DATA_WIDTH[2:0]

000

Sets the highest bit of the bit slice that the write sequencer will

write to. Total width = value of this register + 1. For example:

000: Highest bit is 0. Data width 1

001: Highest bit is 1. Data width 2

…

111: Highest bit is 7. Data width 8

3:0

WSEQ_DATA_START[3:0]

0000

Selects the bit in the register for WSEQ_DATA to replace. For

example, if:

WSEQ_ADDR = 2Eh

WSEQ_DATA_WIDTH = 3 WSEQ_DATA_START = 5,

the write sequencer (when the sequence is activated) will

replace bits [7:5] of register 2Eh with the data supplied in

WSEQ_DATA[2:0].

WM8961 Datasheet(PDF) 99 Page - Wolfson Microelectronics plc

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