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CYRF69103
Document #: 001-07611 Rev *B
Page 58 of 73
Mnemonic
RX_CRC_LSB_ADR
Address
0x19
Bit
7
6
5
4
3
2
1
0
Default
1
1
1
1
1
1
1
1
Read/Write
R
R
R
R
R
R
R
R
Function
RX CRC LSB
Bits 7:0
Received CRC16 LSB. The LSB of the CRC16 field from the last received packet. This value is valid whether or not the CRC16
field matched the calculated CRC16 of the received packet.
Mnemonic
RX_CRC_MSB_ADR
Address
0x1A
Bit
7
6
5
4
3
2
1
0
Default
1
1
1
1
1
1
1
1
Read/Write
R
R
R
R
R
R
R
R
Function
RX CRC MSB
Bits 7:0
Received CRC16 MSB. The MSB of the CRC16 field from the last received packet. This value is valid whether or not the
CRC16 field matched the calculated CRC16 of the received packet.
Mnemonic
TX_OFFSET_LSB_ADR
Address
0x1B
Bit
7
6
5
4
3
2
1
0
Default
0
0
0
0
0
0
0
0
Read/Write
R/W
R
R
R
R
R
R
R
Function
STRIM LSB
Bits 7:0
The least significant 8 bits of the synthesizer offset value. This is a 12-bit 2’s complement signed number which may be used to
offset the transmit frequency of the device by up to ±1.5 MHz. A positive value increases the transmit frequency, and a negative
value reduces the transmit frequency. A value of +1 increases the transmit frequency by 732.6 Hz; a value of –1 decreases the
transmit frequency by 732.6 Hz. A value of 0x0555 increases the transmit frequency by 1 MHz; a value of 0xAAB decreases
the transmit frequency by 1 MHz. Typically, this register is loaded with 0x55 during initialization. Typically this feature is used to
avoid the need to change the synthesizer frequency when switching between TX and RX. As the IF = 1 MHz the RX frequency
is offset 1 MHz from the synthesizer frequency; therefore, transmitting with a 1 MHz offset allows the same synthesizer fre-
quency to be used for both transmit and receive.
Synthesizer offset has no effect on receive frequency.
Mnemonic
TX_OFFSET_MSB_ADR
Address
0x1C
Bit
7
6
5
4
3
2
1
0
Default
-
-
-
-
0
0
0
0
Read/Write
-
-
-
-
R/W
R/W
R/W
R/W
Function
Not Used
Not Used
Not Used
Not Used
STRIM MSB
Bits 3:0
The most significant 4 bits of the synthesizer trim value. Typically, this register is loaded with 0x05 during initialization.
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