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參數(shù)資料
| 型號： | MSM7575 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 元件分類： | Codec |
| 英文描述： | Multi-Function ADPCM CODEC(多功能ADPCM(自適應(yīng)差分脈沖編碼調(diào)制）編碼譯碼器) |
| 中文描述： | 多功能差分PcM編解碼器（多功能差分PcM（自適應(yīng)差分脈沖編碼調(diào)制）編碼譯碼器） |
| 文件頁數(shù)： | 4/25頁 |
| 文件大?。?/td> | 187K |
| 代理商： | MSM7575 |
4/25
Semiconductor
MSM7575
PIN AND FUNCTIONAL DESCRIPTIONS
AIN1+, AIN1–, AIN2, GSX1, GSX2
Transmit analog input and the output for transmit gain adjustment. The pin AIN1– (AIN2)
connects to the inverting input of the internal transmit amplifier, and the pin AIN1+ connects to
the non-inverting input of the internal transmit amplifier. The pin GSX1 (GSX2) connects to
output of the internal transmit amplifier. Gain adjustment should be referred to Fig. 1.
VFRO, AOUT+, AOUT–, PWI, SAO, RINGC
Used for the receive analog output and the output for receive gain adjustment. VFRO is an
output of the receive filter. AOUT+ and AOUT– are differential analog signal outputs which can
directly drive Z
L
= 350
W
+ 120 nF or the 1.2 k
W
load. Gain adjustment should be referred to Fig.
1.
The ORed signal with the control register data CR4-B5 and the external pin RINGC determines
the output pins (AOUT+ and AOUT- /SAO+ and SAO-) for the speech signal and an acoustic
component of the sounder tone, DTMF tone, R tone, F tone, various kinds of tones at either the
VFRO pin or the SAO pin.
Figure 1 Analog Input/Output Interface
Transmit Gain: V
GSX2
/Vi
= (R2/R1)
￥
(R4/R3)
AIN1–
GSX1
R2
C1
to ENCODER
R1
from
DECODER
Differential
Analog
Output
Receive Gain: Vo/V
VFRO
= 2
￥
(R6/R5)
Z
L
= 120 nF
+ 350
W
AIN2
GSX2
R4
C2
R3
AOUT–
PWI
R6
VFRO
R5
AOUT+
AIN1+
–1
–
+
–
+
–
+
C1
R1
R2
V
REF
SG
+
–
10
m
F
0.1
m
F
Differential
Analog Input
Vi
V
O
Sounder Output
Signal
SAO
+1
SELECT
RINGC
TOUT1
TOUT2
TOUT3
–
+
from MCU INT.
from MCU INT.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSM7576 | LSI |
| MSM7577 | Voice Signal Level Control LSI |
| MSM7580 | ITU-T G.721 ADPCM TRANSCODER |
| MSM7581 | ITU-T G.721 4ch ADPCM TRANSCODER |
| MSM7582 | pie/4 Shift QPSK MODEM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7576 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:LSI |
| MSM7577 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Voice Signal Level Control LSI |
| MSM7578 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail CODEC |
| MSM7578H | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail CODEC |
| MSM7578HG3-K | 制造商:ROHM Semiconductor 功能描述: |
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