EVAL-ADF7021DBZ5 Datasheet, PDF (13/64 Pages) Analog Devices – High Performance Narrow-Band Transceiver IC

Data Sheet
4FSK Timing
In 4FSK receive mode, MSB/LSB synchronization should be guaranteed by SWD in the receive bit stream.
REGISTER 0 WRITE
SWITCH FROM Rx TO Tx
t_SYMBOL
t_BIT
t₁₃
t₁₁
t₁₂
SLE
ADF7021
TxRxCLK
TxRxDATA
Rx SYMBOL
MSB
Rx SYMBOL
LSB
Rx SYMBOL
MSB
Rx SYMBOL
LSB
Tx SYMBOL Tx SYMBOL Tx SYMBOL
MSB
LSB
MSB
Tx/Rx MODE
SLE
Rx MODE
Figure 6. Receive-to-Transmit Timing Diagram in 4FSK Mode
Tx MODE
REGISTER 0 WRITE
SWITCH FROM Tx TO Rx
t₁₅
t₁₄
t_SYMBOL
t_BIT
TxRxCLK
TxRxDATA
Tx SYMBOL
MSB
Tx SYMBOL
LSB
Tx SYMBOL
MSB
Tx SYMBOL
LSB
Rx SYMBOL Rx SYMBOL
MSB
LSB
Tx/Rx MODE
Tx MODE
Figure 7. Transmit-to-Receive Timing Diagram in 4FSK Mode
Rx MODE
Rev. B | Page 13 of 64