WM8940GEFL/V Wolfson Microelectronics, WM8940GEFL/V Datasheet - Page 78

• Manufacturer Part Number: WM8940GEFL/V
• Description: Audio CODECs Mono CODEC with Speaker Driver
• Manufacturer: Wolfson Microelectronics

Specifications of WM8940GEFL/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-24
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8940
w
46 (2Eh)
47 (2Fh)
48 (30h)
49 (31h)
50 (32h)
51 (33h)
52 (34h)
53 (35h)
REGISTER
ADDRESS
5:0
15:0
15:9
8
7
6:4
3
2:0
15:0
15:2
1
0
15:6
5
4:2
1
0
15:0
15:0
15:0
BIT
INPPGAVOL
PGABOOST
MICP2BOOSTVOL 000
AUX2BOOSTVOL 000
TSDEN
VROI
AUX2SPK
BYP2SPK
DAC2SPK
LABEL
1
0
0
010000
0000h
00h
0
0
0
0000h
0000h
0
000h
0
000
0000h
0000h
0000h
DEFAULT
Input PGA volume
000000 = -12dB
000001 = -11.25db
.
010000 = 0dB
.
111111 = 35.25dB
Reserved
Reserved
Input Boost
0 = PGA output has +0dB gain through input BOOST
stage.
1 = PGA output has +20dB gain through input BOOST
stage.
Reserved
Controls the MICP pin to the input boost stage (NB,
when using this path set MICP2INPPGA=0):
000=Path disabled (disconnected)
001=-12dB gain through boost stage
010=-9dB gain through boost stage
…
111=+6dB gain through boost stage
Reserved
Controls the auxiliary amplifier to the input boost
stage:
000=Path disabled (disconnected)
001=-12dB gain through boost stage
010=-9dB gain through boost stage
…
111=+6dB gain through boost stage
Reserved
Reserved
Thermal Shutdown Enable
0 : thermal shutdown disabled
1 : thermal shutdown enabled
VREF (AVDD/2 or 1.5xAVDD/2) to analogue output
resistance
0: approx 1kΩ
1: approx 30 kΩ uthorize
Reserved
Output of auxiliary amplifier to speaker mixer input
0 = not selected
1 = selected
Reserved
Bypass path (output of input boost stage) to speaker
mixer input
0 = not selected
1 = selected
Output of DAC to speaker mixer input
0 = not selected
1 = selected
Reserved
Reserved
Reserved
DESCRIPTION
PD, Rev 4.2, April 2008
Input Signal Path
Input Signal Path
Input Signal Path
Input Signal Path
Output Switch
Analogue Outputs
Analogue Outputs
Analogue Outputs
Analogue Outputs
REFER TO
Production Data
78