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參數(shù)資料
| 型號(hào)： | MSM7582B |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | pie/4 Shift QPSK MODEM |
| 中文描述： | 餡餅/ 4移調(diào)制調(diào)制解調(diào)器 |
| 文件頁數(shù)： | 23/24頁 |
| 文件大?。?/td> | 181K |
| 代理商： | MSM7582B |
Semiconductor
MSM7582/7582B
23/24
Demodulator Control Timing Diagram (Example)
Democulator unit
Modulator
input data
Timing for CS
PDN2
SLS2
240 bits 625
m
s
R1
G
Slot 1
R2
G
Slot 2
R3
G
Slot 3
R4
G
Slot 4
G
SLS1
"0"
"0"
"0"
"1"
"1"
"0"
"1"
"1"
AFC
R1
R2
RXD
R3
R4
RXC
G
G
G
G
G
G
G
G
R
R
R
R
SS SS PR PR
UW
PR
CR
CR
G
G
G
G
G
G
G
G
RXD
AFC
RPR
RCW
56 bits
64 bits
G
G
G
G
G
G
G
G
R
R
R
R
SS SS PR PR
UW
PR
CR
CR
G
G
G
G
G
G
G
G
RXD
8 bits
RPR
RCW
"0"
When the strength of the received wave is small.
Less than 30 bits
AFC
G
R
SS
PR
UW
CR
:
:
:
:
:
:
Guard bit
Ramp bit
Start symbol bit
Preamble bit
Unique word bit
CRC bit
For PS, the window is initially open to
wait for the control signal from CS.
RPR is closed after UW is detected.
PDN2
SLS2
SLS1
"0"
"0"
AFC
R1
RXD
RXC
Timing for PS
RPR
RCW
AFC
(1) Control channel / synchronous burst (SS + PR = 64 bits)
(3) Communication channel (SS + PR = 8 bits)
When the strength of the received wave is large
(2) When synchronization is not established (for PS only)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MSM7583 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pie/4 Shift QPSK MODEM |
| MSM7583GS-BK | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pie/4 Shift QPSK MODEM |
| MSM7584C | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pi /4 Shift QPSK MODEM/ADPCM CODEC |
| MSM7584CTS-K | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pi /4 Shift QPSK MODEM/ADPCM CODEC |
| MSM7584D | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pi/4 Shift QPSK MODEM/ADPCM CODEC |
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