WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 144

• Manufacturer Part Number: WM8903LGEFK/RV
• Description: Audio CODECs ULTRA LOW PWR HI FI CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8903LGEFK/RV

• Audio Codec Type: Stereo Codec
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 6
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Sampling Rate: 96kHz
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Adcs / Dacs Signal To Noise Ratio: 96dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8903
R110 (6Eh)
Write
Sequencer 2
Register 6Eh Write Sequencer 2
R111 (6Fh)
Write
Sequencer 3
Register 6Fh Write Sequencer 3
R112 (70h)
Write
Sequencer 4
Register 70h Write Sequencer 4
w
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
9:4
BIT
5:0
BIT
11:8
BIT
7:0
0
9
8
14
WSEQ_START_INDEX[5:0]
WSEQ_CURRENT_INDEX[5:0]
WSEQ_DELAY[3:0]
WSEQ_DATA[7:0]
WSEQ_EOS
WSEQ_ABORT
WSEQ_START
LABEL
WSEQ_BUSY
LABEL
LABEL
0000_0000 Data to be written in this sequence step. When the
DEFAULT
0000
0
DEFAULT
00_0000
DEFAULT
0
0
00_0000
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 delay time per step (including execution)=
62.5μs × (2^WSEQ_DELAY + 8)
data 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.
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 31 = RAM addresses
32 to 48 = ROM addresses
49 to 63 = Reserved
Sequence Current Index. This is the
location of the most recently accessed
command in the write sequencer memory.
Sequencer Busy flag (Read Only).
0 = Sequencer idle
1 = Sequencer busy
Note: it is not possible to write to control
registers via the control interface while the
Sequencer is Busy.
DESCRIPTION
DESCRIPTION
DESCRIPTION
PP, Rev 3.1, August 2009
Pre-Production
144