wm9090 Wolfson Microelectronics plc, wm9090 Datasheet - Page 64

• Manufacturer Part Number: wm9090
• Description: Ultra Low Power Audio Subsystem
• Manufacturer: Wolfson Microelectronics plc

WM9090
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Register 47h Write Sequencer 1
Register 48h Write Sequencer 2
Register 49h Write Sequencer 3
Sequencer 1
Sequencer 2
Sequencer 3
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
R71 (47h)
R72 (48h)
R73 (49h)
Write
Write
Write
14:12
11:8
11:8
BIT
BIT
BIT
7:0
7:0
5:0
14
9
8
WSEQ_DELAY
WSEQ_START
WSEQ_START
WSEQ_DATA_
WSEQ_DATA_
WSEQ_ADDR
WSEQ_ABOR
WSEQ_DATA
WSEQ_EOS
_INDEX [5:0]
WIDTH [2:0]
START [3:0]
LABEL
LABEL
LABEL
[7:0]
[3:0]
[7:0]
T
0000_0000 Control Register Address to be written to in this
0000_0000 Data to be written in this sequence step. When the data
DEFAULT
DEFAULT
DEFAULT
00_0000
0000
0000
000
0
0
0
Width of the data block written in this sequence step.
000 = 1 bit
001 = 2 bits
010 = 3 bits
011 = 4 bits
100 = 5 bits
101 = 6 bits
110 = 7 bits
111 = 8 bits
Bit position of the LSB of the data block written in this
sequence step.
0000 = Bit 0
…
1111 = Bit 15
sequence step.
End of Sequence flag. This bit indicates whether the
Control Write Sequencer should stop after executing
this step.
0 = Not end of sequence
1 = End of sequence (Stop the sequencer after this
step).
Time delay after executing this step.
Total time per step (including execution) = 62.5us ×
(2^WSEQ_DELAY + 8)
width is less than 8 bits, then one or more of the MSBs
of WSEQ_DATA are ignored. It is recommended that
unused bits be set to 0.
Writing a 1 to this bit aborts the current sequence and
returns control of the device back to the serial control
interface.
Writing a 1 to this bit starts the write sequencer at the
memory location indicated by the
WSEQ_START_INDEX field. The sequence continues
until it reaches an “End of sequence” flag. At the end of
the sequence, this bit will be reset by the Write
Sequencer.
Sequence Start Index. This is the memory location of
the first command in the selected sequence.
0 to 15 = RAM addresses
16 to 58 = ROM addresses
59 to 63 = Reserved
DESCRIPTION
DESCRIPTION
DESCRIPTION
PP, January 2010, Rev 3.0
REFER TO
REFER TO
REFER TO
Pre-Production
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