msm7583 Oki Semiconductor, msm7583 Datasheet - Page 7
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msm7583
Manufacturer Part Number
msm7583
Description
Shift Qpsk Modem
Manufacturer
Oki Semiconductor
Datasheet
1.MSM7583.pdf
(23 pages)
¡ Semiconductor
MCK
IFIN1, IFIN2
IFCK
X1, X2
Master clock input.
The clock frequency is 19.2 MHz.
Modulated signal inputs 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. IFIN1 is for Channel 1, and IFIN2 for Channel 2.
Clock signal input for demodulator block IF frequency (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.)
Crystal oscillator connection pins.
When supplying a 19.0222 MHz or 19.1111 MHz clock to IFCK, use these pins. (Refer to Fig. 2.)
When IFIN = 10.7 MHz or 10.75 MHz
X1
19.0222 MHz or 19.1111 MHz
MSM7583
X2
Figure 2 How to Use IFCK, X1, and X2
IFCK
When IFIN = 1.2 MHz or 10.8 MHz
X1
MSM7583
X2
IFCK
MSM7583
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