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(yè)數(shù)： 8/24頁(yè)
文件大?。?/td> 181K
代理商： MSM7582B
Semiconductor
MSM7582/7582B
8/24
MCK
Master clock input.
The clock frequency is 19.2 MHz.
IFIN
Modulated signal input for the demodulator block.
Select the IF frequency from 1.2 MHz, 10.7 MHz, 10.75 MHz, and 10.8 MHz, based on CR0 – B4
and B3.
IFCK
Clock signal input for demodulator block IF frequencies (10.7 MHz or 10.75 MHz).
If the IF frequency is 10.7 MHz, 19.0222 MHz should be supplied. When it is 10.75 MHz, 19.1111
MHz should be supplied. When the IF frequency is 1.2 MHz or 10.8 MHz, set this pin to “0” or
“1”. (Refer to Fig. 2.)
X1, X2
Crystal oscillator connection pins.
When supplying a 19.0222 MHz or 19.1111 MHz clock to IFCK, use these pins (Refer to Fig. 2.)
X1
IFCK
19.0222 MHz or 19.1111 MHz
When IFIN = 10.7 MHz or 10.75 MHz
X2
MSM7582/7582B
X1
IFCK
X2
MSM7582/7582B
When IFIN = 1.2 MHz or 10.8 MHz
Figure 2 How to Use IFCK, X1, and X2
RXD, RXC
Receive data and clock output. When power is turned on, the outputs of circuits selected by SLS1
and SLS2 appear at these pins. (Refer to Fig. 3)
RXD1
RXC
SLS2
The recovery data and clock pulse are selected
asynchronously using the SLS signals.
SLS1
Figure 3 RXD and RXC Timing Diagram
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