Texas Instruments TRF7960 Manual page 25

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5.3.1 Control Registers – Main Configuration Registers
Controls the power mode, RF on / off, AGC, AM / PM
Register default is 0x01. It is preset at EN = L or POR = H
Bit Bit Name Function
B7 stby 1 = standby mode
0 = active mode
B6 direct 1 = received sub-carrier signal (decoders
bypassed)
0 = received decoded signal from selected
decoder
B5 rf_on 1 = RF output active
0 = RF output not active
B4 rf_pwr 1 = half output power
0 = full output power
B3 pm_on 1 = RX_IN2
0 = RX_IN1
B2 agc_on 1 = AGC on
0 = AGC off
B1 rec_on 1 = Reciever enable for external field
measurement
B0 vrs5_3 1 = 5 V operation (V
0 = 3 V operation (V
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Table 5-9. Chip Status Control (00h)
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IN
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IN
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SLOU186F – AUGUST 2006 – REVISED AUGUST 2010
Comments
Standby mode keeps regulators and oscillator running en_rec =
L, en_tx = L
The modulation control is direct through MOD input. The receiver
sub-carrier signal is on I/0_6.
When B5 = 1, it activates the RF field.
1 = RF driver at 8 Ω
0 = RF driver at 4 Ω
1 = Selects PM signal input
0 = Selects AM signal input
AGC selection
Receiver and oscillator are enabled; intended for external field
measurement.
range; 5 V (4.3 V – 5 V), or 3 V (2.7 V – 3.4
Selects the V
DD_RF
V)
TRF7960
TRF7961
System Description 25