參數(shù)資料
型號(hào): UPD9930G-22
廠商: NEC Corp.
元件分類: Codec
英文描述: LINEAR CODEC FOR DIGITAL CELLULAR TELEPHONE
中文描述: 線性編解碼器數(shù)字蜂窩電話
文件頁數(shù): 31/78頁
文件大?。?/td> 336K
代理商: UPD9930G-22
μ
PD9930
31
Register address
0
0
0
1
1
0
REC2PDB
TXAG
TXGCR
Pre-filter/mixer
Voice send analog
gain control
Microphone input
or
Accessory input
A/D
Voice send digital
gain control
Digital signal-processor
BPF
0 to –2.8 dB
(0.4 dB steps)
SO
Register address
0
1
0
DGGSR
RXDG1
RXDG0
TXDG2
TXDG1
TXDG0
Receiver amplifier 1
Voice receive analog
gain control
Receiver output
D/A
Voice receive digital
gain control
SI
0 to –31 dB
(1 dB steps)
LPF
0 to –2.4 dB
(0.8 dB steps)
0, –3 dB
Register address
0
0
1
RXGCR
RXAG4
RXAG3
RXAG2
RXAG1
RXAG0
Figure 4-1 Send/Receive Gain Control
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