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the signal holding state, set one of the follows.
- Set TC32306FTG in the status of Battery Saving or Standby.
- Change from TX to RX.
- Change TX modulation. (ASK ↔ FSK)
- Change RF frequency. (In the change in the value of register "h'0B" and/or "h'0C")
- Change the value of register:h'12[D7:D2] for TX deviation. (This is only valid in FSK setting
(h'0A[D4]FSK_ASK = "0"))
Notice:
-
PA will continue to operate even though PLL_LD signal will be "L" because Internal LD Signal
still keeps to be "H".
-
In PA operation, keep its load condition suitable, and that load condition must not be open or
short.
-
Only use for RX, keep PA_OUT pin to be open, and this IC must not be set to TX.
-
Must not change RF-Transmitting Frequency Band (register: h'0A[D1:D0]) alone during TX. It
may cause of unexpected radiation because the keeping of Internal LD Signal level is not
released.
(2)
Output level
The output level is controlled 2 types of step (Coarse, Fine) independently by register.
Table 6-34 Example of PA Output Level (Coarse)
h'13[D3]
TX_gain1
Table 6-35 Example of PA Output Level (Fine)
h'13[D7]
TX_subgain3
0
1
The reference level of each PA output settings are indicated in Fig 6-12. The output level steps are
different from frequency band or TX_gain settings.
h'13[D2]
Output Level Variation Width
TX_gain0
0
0
0
1
1
0
1
1
Above are reference values at 315 MHz Band.
h'13[D6]
h'13[D5]
TX_subgain2
TX_subgain1
0
0
...
1
1
32
(Reference value)
-10.1dB
-5.3dB
-2.0dB
0dB (Initial)
h'13[D4]
Level Settings
TX_subgain0
0
Minimum
...
1
Maximum (Initial)
TC32306FTG
2015-10-01
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