msm6895 Oki Semiconductor, msm6895 Datasheet - Page 9
msm6895
Manufacturer Part Number
msm6895
Description
Multi-function Pcm Codec
Manufacturer
Oki Semiconductor
Datasheet
1.MSM6895.pdf
(43 pages)
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¡ Semiconductor
MSM6895/6896
TPAI, TPAO
The transmit preamplifier input and output.
TPAI is the input and TPAO is the output. Connect TPAI to the microphone of handset via an AC-
coupling capacitor if the DC offset appears at a transmit signal (offset from SGT). The transmit
path from TPAI to TPAO is always established regardless of processor control.
VSG
Signal ground level output.
The output level is equal to a half of the power supply voltage.
VSGC
Bypass capacitor connecting pin for signal ground level.
Insert a 0.1 mF capacitor with good higher frequency characteristic, between VSGC and VAG.
VA, VD
+5 V power supply.
VA is for an analog circuit and VD is for digital supply. Connect both VA and VD to the +5 V
analog path of the system.
CAI
CODEC analog output.
Connect CAI to T1O.
CAO
CODEC analog output.
Connect CAO to R1I via an AC-Coupling capacitor.
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