參數(shù)資料
型號: MSM7584C
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: π/4 Shift QPSK MODEM(π/4移動QPSK調(diào)制解調(diào)器/ADPCM編碼譯碼器)
中文描述: π/ 4移位的QPSK調(diào)制解調(diào)器(π/ 4移動的QPSK調(diào)制解調(diào)器/差分PcM編碼譯碼器)
文件頁數(shù): 2/57頁
文件大小: 321K
代理商: MSM7584C
Semiconductor
MSM7584C
2/57
BLOCK DIAGRAM
IFIN
RXD
RXC
RXSC
PDN0
PDN1
PDN2
I+
I–
Q+
Q–
DIN
EXCK
DEN
DOUT
RESET
RO0 to RO1
SGM
SGCR
SGCT
AIN–
AIN+
GSX
PWI
AOUT–
AOUT+
VFRO
SAO
VDDM
DGM
AGM
RPR
AFC/RCW
SLS
BSTO
TXD
TXW
TXCI
TXCO
RSGAIN
RSSI
SGRS
DIO
WE
SAD
SAS
TAS
RWCK
CS1
CS2
VOXO
IS
PCMSI
PCMSO
BCLK
SYNC
PCMRI
PCMRO
IR
VOXI
RXMUTE
MLV2
MLV1
MLV0
I
I
I
I
I
I
I
M
T
T
T
P
V
D
A
Phase detector
Delay detector
IFSEL
(From CR)
D
E
C
SL1
SL2
S
S
AFC
DPLL
S
E
L
+1
–1
+1
–1
DC adjust
DC adjust
LPF
LPF
ATT
ATT
D/A
D/A
Root Nyquist
LPF
S/P
MAPPING
PLL
1/10
384k
3.84M
To D/A
TXCSEL
(From CR)
Control
register
To MODEM
To CODEC
8b
A/D
Conv.
+
Offset adjust
2b
To internal SG
inside modem
Receiver
Transmitter
R
VREF
Serial
Register
Controller
+
RC
filter
A/D
converter
BPF
TONE
generator
Voice
Detect
Com-
pander
ADPCM
CODER
ATT
+
150
W
driving AMP
+1
–1
Noise
generator
Power detect
+1
RC
filter
D/A
converter
LPF
ATT
SW1
SW2
VDD
SW3
SW4 SW5
ATT
S
E
L
S
E
L
Expander
ADPCM
DECODER
From CR
P/S
&
S/P
S
E
L
+
+
T
Judge
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