ATA5423_07 Datasheet, PDF (39/100 Pages) ATMEL Corporation – UHF ASK/FSK Transceiver

ATA5423/ATA5425/ATA5428/ATA5429
7.3.2
Table 7-6.
T_MODE
0
1
Control Register 1 (Function of Bit 0)
Function
TX and RX function via TX/RX data buffer (default)
Transparent mode, TX/RX data buffer disabled, TX modulation data stream via pin
SDI_TMDI, RX modulation data stream via pin SDO_TMDO
Control Register 2 (ADR 1)
Table 7-7. Control Register 2 (Function of Bit 7, Bit 6, Bit 5, Bit 4, Bit 3, Bit 2 and Bit 1)
FR6
2⁶
FR5
2⁵
FR4
2⁴
FR3
2³
FR2
2²
FR1
2¹
FR0
2⁰ Function
0
0
0
0
0
0
0 FREQ2 = 0
0
0
0
0
0
0
1 FREQ2 = 1
.
.
.
.
.
.
.
1
0
1
1
0
0
0 FREQ2 = 88 (default)
.
.
.
.
.
.
.
1
Note:
1
1
1
1
1
1 FREQ2 = 127
Tuning of f_RF LSBs (total 13 bits), frequency trimming resolution of f_RF is f_XTO/16384, which is
approximately 800 Hz (see section “XTO”, Table 4-1 on page 28)
Table 7-8.
P_MODE
0
1
Control Register 2 (Function of Bit 0 in RX Mode)
Function (RX Mode)
Pin IRQ is set to “1” if the bit check is successful (default)
No effect on pin IRQ if the bit check is successful
Table 7-9.
P_MODE
0
1
Control Register 2 (Function of Bit 0 in TX Mode)
Function (TX Mode)
Manchester modulator on (default)
Manchester modulator off (NRZ mode)
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