msm7732a Oki Semiconductor, msm7732a Datasheet - Page 2

• Manufacturer Part Number: msm7732a
• Description: Audio Codec
• Manufacturer: Oki Semiconductor

BLOCK DIAGRAM
Microphone
amp input
OKI Semiconductor
35 mW
for receiver
8.8 mW
for earphone
AMPAI
SWB
SWC
SAO
SWA
SWD
AIN–
AIN+
GSX
SWE
AMPAO
AOUT+
AOUT–
PWI
VFRO
SG
32
32
32
20 k
AMPA
20 k
20 k
–1
CR4-B5
D/A
A/D
V
CR1-B1
REF
Slope
Filter
CR3-B7, 6, 5
off,–15 to –3 dB
2 dB step
CR0-B2
LPF
BPF
CR2-B2, 1, 0
-12 to +9 dB
3 dB step
CR4-B6
CR3-B3, 2, 1, 0
–36 to –6 dB
2 dB step
MCU I/F
CR2-B7
TX ON/OFF
CR1-B0
Through
(0 dB loss)
or -12 loss
CR2-B3
RX ON/OFF
CR2-B6, 5, 4
–6 to +8 dB
2 dB step
CR0-B0
PCM
Compand
Detect
Voice
TONE
GEN.
PCM
Expand
FEDL7732A-01-01
to MCUI/F
MSM7732A-01
CR0-B0
PCMOUT
PCMIN
BCLK
SYNC
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