msm7586-01 Oki Semiconductor, msm7586-01 Datasheet - Page 29

• Manufacturer Part Number: msm7586-01
• Description: Shift Qpsk Modem/adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Modem Unit Demodulator Control Timing Diagram (Example)
Demodulator unit
Modulator input data
(1) Control ch/
(SS + PR = 64 bits)
(2) When synchronization is not yet established
(3) Communication ch
(SS + PR = 8 bits)
synchronous burst
PDN2
SLS
AFC
RXD
RXC
RXD
AFC*
RPR
RCW*
AFC*
RPR
RCW*
RXD
AFC
RPR
RCW
    


Figure 15 Modem Unit Demodulator Timing Diagram Example
G G G G G G G G R R R R SS SS PR PR
G G G G G G G G R R R R SS SS PR PR
G
*AFC and RCW may be controlled at the same timing.
1st slot
240 bits
625 ms
R1
R1
"0"
"0"
G
56 bits
Less than 30 bits
8 bits
64 bits
PR UW
PR UW
CR CR G G G G G G G G
CR CR G G G G G G G G
G: Guard bit
R: Ramp bit
SS: Start symbol bit
PR: Preamble bit
UW: Unique word bit
CR: CRC bit
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