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AN625
Rev. 0.1
21
DRV_STRENGTH[6:5]
0 = GPIOs configured as outputs will have highest drive strength.
1 = GPIOs configured as outputs will have medium drive strength.
2 = GPIOs configured as outputs will have medium drive strength.
3 = GPIOs configured as outputs will have lowest drive strength.
Response:
GPIO0_STATE
0 = Pin was read back as a 0
1 = Pin was read back as a 1
GPIO0r[5:0]
0 = Do not modify the behavior of this pin.
1 = Input and output drivers disabled.
2 = CMOS output driven low.
3 = CMOS output driven high.
4 = CMOS input.
5 = 32 kHz clock.
6 = 30 MHz clock.
7 = Divided MCU clock.
8 = High when command complete, low otherwise.
9 = Low when command complete, high otherwise.
10 = High when command overlap occurs. TODO: What clears this.
11 = Serial data out.
12 = Pulses high on power on reset.
13 = Pulses high when calibration timer expires.
14 = Pulses high when wakeup timer expires.
15 = unused0
16 = TX data CLK output to be used in conjuction with TX Data pin.
17 = RX data CLK output to be used in conjuction with RX Data pin.
18 = unused1
19 = TX data.
20 = RX data.
21 = RX raw data.
22 = Antenna 1 Switch used for antenna diversity.
23 = Antenna 2 Switch used for antenna diversity.
24 = High when a valid preamble is detected. Cleared when sync is received.
25 = High when an invalid preamble is detected. TODO: What clears this
26 = High when a sync word is detected. TODO: What clears this
27 = High when RSSI above clear channel assesment threshold, low when below threshold.
32 = High while in the transmit state.
33 = High while in the receive state.
34 = High while the rx fifo is almost full.
35 = High while the tx fifo is almost empty.
36 = High while the battery voltage is low.
37 = High when RSSI above clear channel assesment threshold, goes low on sync detect or exiting rx state.
38 = Toggles when hop occurs.
39 = Toggles when the hop table wraps.
GPIO1_STATE
0 = Pin was read back as a 0
1 = Pin was read back as a 1
GPIO1r[5:0]
Содержание Si446 Series
Страница 111: ...AN625 Rev 0 1 111 NOTES ...