WM8974GEFL/V Wolfson Microelectronics, WM8974GEFL/V Datasheet - Page 75

• Manufacturer Part Number: WM8974GEFL/V
• Description: Audio CODECs Mono Codec with Spkr
• Manufacturer: Wolfson Microelectronics

Specifications of WM8974GEFL/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

Production Data
w
47 (2Fh)
49 (31h)
50 (32h)
REGISTER
ADDRESS
6
5:0
8
7
6:4
3
2:0
8:4
3
2
1
0
8:6
5
4:2
1
0
BIT
INPPGAMUTE
INPPGAVOL
PGABOOST
MICP2BOOSTVOL 000
AUX2BOOSTVOL 000
MONOBOOST
SPKBOOST
TSDEN
VROI
AUX2SPK
BYP2SPK
DAC2SPK
LABEL
1
0
0
010000
0
0
0
00000
0
0
0
000
0
000
0
DEFAULT
Mute control for input PGA:
0=Input PGA not muted, normal operation
1=Input PGA muted (and disconnected from the following
input BOOST stage).
Input PGA volume
000000 = -12dB
000001 = -11.25db
.
010000 = 0dB
.
111111 = 35.25dB
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 t uxiliaryary 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
Mono output boost stage control (see Table 37 for details)
0=No boost (output is inverting buffer)
1=1.5x gain boost
Speaker output boost stage control (see Table 37 for details)
0=No boost (outputs are inverting buffers)
1 = 1.5x gain boost
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
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
DESCRIPTION
PD, Rev 4.5, September 2008
Input Signal Path
Input Signal Path
Input Signal Path
Input Signal Path
Input Signal Path
Analogue Outputs
Analogue Outputs
Output Switch
Analogue Outputs
Analogue Outputs
Analogue Outputs
Analogue Outputs
REFER TO
WM8974
75