WM8945
Production Data
REGISTER MAP
REG
NAME
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DEFAULT
Software Reset/Chip
ID 1
R0 (0h)
SW_RESET[15:0]
6229h
Chip ID 2
R1 (1h)
R2 (2h)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
CHIP_REV[3:0]
0000h
0000h
Power management
1
INPPG
AL_EN
A
ADCL_
ENA
0
DMIC_
ENA
0
0
MICB_ BIAS_ VMID_ VMID_SEL[1:0]
ENA ENA BUF_E
NA
Power management
2
R3 (3h)
0
OUTL_ SPKR_ SPKL_ SPKR_ SPKL_ SPKR_ SPKL_ SPKR_ SPKL_ SPKR_ SPKL_ SPKR_ SPKL_ DACR DACL_ 0330h
ENA PGA_ PGA_ SPKV SPKV OP_M OP_M OP_E OP_E MIX_M MIX_M MIX_E MIX_E _ENA ENA
ENA ENA DD_E DD_E UTE UTE
NA NA
DACDATA_PU FRAME_PULL[ BCLK_PULL[1: ADCR ADCL_
LL[1:0] 1:0] 0] _SRC SRC
NA
NA
UTE UTE
NA
NA
Audio Interface
R4 (4h)
R5 (5h)
1
DACL_ BCLK_ LRCLK
WL[1:0]
FMT[1:0]
028Ah
0000h
SRC
INV
_INV
Companding control
0
0
0
0
0
0
0
0
0
0
LOOP
BACK
0
DAC_ DAC_ ADC_ ADC_
COMP COMP COMP COMP
MODE
MODE
Clock Gen control
Additional control
R6 (6h)
R7 (7h)
OSC_ MCLK_PULL[1: CLKO CLKOUT_DIV[1 SYSCL SYSCL
SYSCLK_DIV[2:0]
TOCL
BCLK_DIV[2:0]
MSTR
0106h
000Dh
CLK_E
NA
0]
UT_SE
L
:0]
K_ENA K_SR
C
K_ENA
0
0
0
0
0
0
VMID_ VMID_ VMID_ START BIAS_ VMID_RAMP[1: VMID_
SR[3:0]
FAST_ REF_S CTRL UP_BI SRC
0]
ENA
START EL
AS_EN
A
FLL Control 1
R8 (8h)
0
FLL_CLK_REF
_DIV[1:0]
FLL_OUTDIV[2:0]
FLL_CTRL_RATE[2:0]
FLL_FRATIO[2:0]
FLL_F FLL_E
0102h
RAC
NA
FLL Control 2
FLL Control 3
GPIO Config
R9 (9h)
FLL_K[15:0]
3127h
0104h
0000h
R10 (Ah)
R11 (Bh)
0
0
FLL_N[9:0]
0
0
FLL_GAIN[3:0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MODE
_GPIO
GPIO1 Control
GPIO2 Control
GPIO3 Control
GPIO4 Control
System Interrupts
Status Flags
R12 (Ch)
R13 (Dh)
R14 (Eh)
R15 (Fh)
R16 (10h)
R17 (11h)
GP1_D GP1_PULL[1:0] GP1_I
GP1_P
OL
0
GP1_L
VL
0
0
0
0
0
0
GP1_FN[3:0]
GP2_FN[3:0]
GP3_FN[3:0]
GP4_FN[3:0]
8000h
8000h
C000h
8000h
0000h
0000h
IR
NT_M
ODE
GP2_D GP2_PULL[1:0] GP2_I
0
0
0
GP2_P
OL
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
GP2_L
VL
IR
NT_M
ODE
GP3_D GP3_PULL[1:0] GP3_I
GP3_P
OL
GP3_L
VL
IR
NT_M
ODE
GP4_D GP4_PULL[1:0] GP4_I
GP4_P
OL
GP4_L
VL
IR
NT_M
ODE
TEMP GP4_I GP3_I GP2_I GP1_I TCHD TCHP AUXA
0
0
0
0
0
0
0
0
LDO_
UV_IN
T
_INT
NT
NT
NT
0
NT ATA_I D_INT DC_IN
NT
T
TEMP
_STS
0
0
0
0
0
0
0
0
LDO_
UV_ST
S
IRQ Config
R18 (12h)
R19 (13h)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IM_IR
Q
0001h
0000h
System Interrupts
Mask
IM_TE IM_GP IM_GP IM_GP IM_GP IM_TC IM_TC IM_AU
MP_IN 4_INT 3_INT 2_INT 1_INT HDAT HPD_I XADC
IM_LD
O_UV_
INT
T
A_INT NT
_INT
Control Interface
DAC Control 1
R20 (14h)
R21 (15h)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SPI_O SPI_4 AUTO
0002h
D
WIRE _INC
0
0
0
0
DAC_
MUTE
ALL
DAC_
AUTO
MUTE
0
0
DACL_ 0110h
DATIN
V
DAC Control 2
R22 (16h)
0
0
0
0
0
0
0
0
0
0
DAC_
0
0
0
DAC_
0010h
VOL_R
SB_FL
PD, May 2011, Rev 4.1
108
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
