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WM9093ECS/R 데이터시트(PDF) 48 Page - Wolfson Microelectronics plc

부품명 WM9093ECS/R
상세설명  Ultra Low Power Audio Subsystem
PDF  84 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9093ECS/R 데이터시트(HTML) 48 Page - Wolfson Microelectronics plc

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WM9093
Production Data
w
PD, March 2012, Rev 4.2
48
RECOMMENDED HEADPHONE START UP SEQUENCE
Below is a recommended headphone start up sequence for suppressing pops.
Firstly program the following sequence into the Control Write Sequencer. For further details refer to
the ‘Programming a Sequence’ section.
WSEQ
INDEX
REGISTER
ADDRESS
WIDTH
START
DATA
DELAY
EOS
DESCRIPTION
0
(00h)
R76 (4Ch)
1 bits
Bit 15
01h
0h
0b
Enable Charge Pump
1
(01h)
R3 (03h)
2 bits
Bit 4
03h
0h
0b
Enable Output Mixers
2
(02h)
R46 (2Dh)
1 bits
Bit 6
01h
0h
0b
Enable path from IN1A
TO MIXOUTL
3
(03h)
R47 (2Eh)
1 bits
Bit 4
01h
0h
0b
Enable path from IN1B
TO MIXOUTR
4
(04h)
R48 (2Fh)
1 bits
Bit 8
00h
0h
0b
Un-mute MIXOUTL
5
(05h)
R49 (30h)
1 bits
Bit 8
00h
0h
0b
Un-mute MIXOUTR
6
(06h)
R28 (1Ch)
1 bits
Bit 8
01h
0h
0b
HPOUT1L_VOL=-12dB
and update
7
(07h)
R29 (1Dh)
1 bits
Bit 8
01h
0h
0b
HPOUT1R_VOL=-12dB
and update
8
(08h)
R1 (01h)
2 bits
Bit 8
03h
0h
0b
Enable HPOUTL/R
9
(0Ah)
R96 (60h)
6 bits
Bit 0
22h
0h
0b
Enable HP DLY
10
(0Bh)
R84 (54h)
6 bits
Bit 0
33h
9h
(32.5ms)
0b
Enable DC Servo and
Start Calibration
11
(0Ch)
R96 (60h)
8 bits
Bit 0
EEh
0h
1b
Enable Headphone
Output
Secondly, initiate the sequence by performing the following set of register writes.
REGISTER
ADDRESS
DATA
DESCRIPTION
R1 (01h)
Power Management (1)
0x000B
OSC_ENA=1, VMID_RES=01,
BIAS_ENA=1
R2 (02h)
Power Management (2)
0x60C0
Enable input PGAs
R22 (16h)
IN1 Line Control
0x0000
IN1+/- to s/e mode and disable input
clamp
R24 (18h)
IN1 Line Input A Volume
0x0100
IN1A Volume=-6dB and update
R25 (19h)
IN1 Line Input B Volume
0x0100
IN1B Volume=-6dB and update
R70 (46h)
Write Sequencer 0
0x0100
Write Sequencer enable
R71 (47h)
Write Sequencer 0
0x0100
WSEQ_START=1



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