Specifications

14
Analog S/W
MC14053B
Sub-Audio LPF
MF6
Z1
Z
Y1
Y
Adj. Level
Master MCU
Tone En
Mod Out
Y0
Z0
X1
X
X0
Sub-Audio
Encoder
Serial Data In Serial Data In
(CMX469A)
FFSK Modem
Option Board
Tx_CLK
Rx_CLK
Tx_Data_Out
Rx_Data_In
RDI
RxC
TDO
TxC
Tx_Signal
Slave MCU
Tx_En
Rx_En
Data BPF
Analog S/W
MC14053B
Sub-Audio LPF
MF6
Z1
Z
Y1
Y
Master MCU
Y0
Z0
X1
X
X0
Pre-Selector
RF Board
Sub-Audio LPF
4th Order
AF
IF IC
TA31136FN
RSSI
Comparator
MF6Tone Detector
RSSI
Busy
Serial Data Out
Serial Data Out
(CMX469A)
FFSK Modem
Option Board
Tx_CLK
Rx_CLK
Tx_Data_Out
Rx_Data_In
RDI
RxC
TDO
TxC
Rx_Signal
Slave MCU
Tx_En
Rx_En
FFSK signal flow in Transmitter FFSK signal flow in Receiver
Figure 3.4. FFSK signal flow diagram
Data BPF
Master MCU
Mod Out
Sub-audio option is ignored.
Serial Data In Serial Data In
(CMX589A)
GMSK Modem
Option Board
Tx_CLK
Rx_CLK
Tx_Data_Out
Rx_Data_In
RDI
RxC
TDO
TxC
Tx_Signal
Slave MCU
Tx_En
Rx_En
RF Board
AF
IF IC
TA31136FN
RSSI
RSSI
Busy
Serial Data Out
Serial Data Out
(CMX589A)
GMSK Modem
Option Board
Tx_CLK
Rx_CLK
Tx_Data_Out
Rx_Data_In
RDI
RxC
TDO
TxC
Rx_Signal
Slave MCU
Tx_En
Rx_En
Master MCU
GMSK signal flow in Transmitter GMSK signal flow in Receiver
Figure 3.5. GMSK signal flow diagram