wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 105

• Manufacturer Part Number: wm8903
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
w
WSEQ
INDEX
R4 (4h)
R65 (41h)
R17 (11h)
R65 (41h)
R5 (5h)
R17 (11h)
R5 (5h)
R5 (5h)
R4 (4h)
R14 (Eh)
R13 (Dh)
R15 (Fh)
R22 (16h)
R18 (12h)
R255 (FFh)
R4 (4h)
R98 (62h)
R255 (FFh)
R90 (5Ah)
REGISTER
ADDRESS
5 bits
1 bit
2 bits
1 bit
8 bits
2 bits
2 bits
2 bits
1 bit
2 bits
2 bits
2 bits
1 bit
2 bits
1 bit
1 bit
1 bit
1 bit
8 bits
WIDTH
Bit 0
Bit 1
Bit 0
Bit 1
Bit 0
Bit 0
Bit 3
Bit 1
Bit 0
Bit 0
Bit 0
Bit 0
Bit 1
Bit 2
Bit 0
Bit 4
Bit 0
Bit 0
Bit 0
START
1Ah
01h
03h
00h
F7h
00h
00h
01h
01h
03h
03h
03h
01h
03h
00h
00h
01h
00h
11h
DATA
DELAY
0h
9h
0h
0h
Bh
0h
0h
0h
0h
0h
0h
0h
0h
5h
0h
0h
6h
0h
0h
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
EOS
POBCTRL = 1
ISEL = 10
STARTUP_BIAS_ENA = 1
BIAS_ENA = 0
SPK_DISCHARGE = 1
Wait 32ms
SPKL_ENA = 1
SPKR_ENA = 1
SPK_DISCHARGE = 0
VMID_TIE_ENA = 1
BUFIO_ENA = 1
VMID_IO_ENA = 1
VMID_SOFT = 10
VMID_RES = 11
VMID_BUF_ENA = 1
Wait 128ms
SPKL_ENA = 0
SPKR_ENA = 0
VMID_SOFT = 00
VMID_RES = 01
BIAS_ENA = 1
HPL_PGA_ENA = 1
HPR_PGA_ENA = 1
MIXOUTL = 1
MIXOUTR = 1
LINEOUTL_PGA_ENA = 1
LINEOUTR_PGA_ENA = 1
CLK_DSP_ENA = 1
DACL_ENA = 1
DACR_ENA = 1
Wait 2 ms
Spare step
POBCTRL = 0
CP_ENA = 1
Wait 4ms
Spare step
HPL_RMV_SHORT = 0
HPL_ENA_OUTP = 0
HPL_ENA_DLY = 0
HPL_ENA = 1
HPR_RMV_SHORT = 0
HPR_ENA_OUTP = 0
HPR_ENA_DLY = 0
HPR_ENA = 1
DESCRIPTION
PP, Rev 3.1, August 2009
WM8903
105