AMIS-52000 Datasheet, PDF (6/15 Pages) AMI SEMICONDUCTOR – Single-Chip Radio Transceiver

AMIS-52000 Single-Chip Radio Transceiver
A data bit or Period
Figure 2: Receiver Data Acquisition Waveforms
Data Sheet
Figure 3: Receiver Acquisition Bit Function Timing
Where: i is a delay allowing pins function to change to signal the HOST controller that a RF caused wakeup occurred.
It can be controlled by Reg 0x0E (IRQ Delay).
k (set by Reg 0x0B) is a delay allowing signal levels
to settle before sampling RSSI.
The TX/RX pin can be programmed to perform one of these
functions by writing to the AMIS-52000 internal registers.
Table 11: TX/RX Pin Definition Control (Registers 0x08, 0x0f and 0x17)
Register
0x08
0x0F
0x17
0x17
0x0E
TX/RX Pin Definition Control (Registers 0x08, 0x0f, and 0x17)
Bit
Bit Name
Bit State Comments
7
Sniff Out
0
Do not output Sniff on TX/RX pin
1
Output Sniff comparator results on TX/RX
2
RC Osc.
0
TX/RX pin is normal operation (DATA)
Out
1
RC osc. clock is output on the TX/RX pin
5
TX/RX Inv
0
TX will output RF energy when TX/RX high
Transmit
1
TX will output RF energy when TX/RX low
5
TX/RX Inv
0
RX is a high level when RF energy is received
Receive
1
RX is a low level when RF energy is received
All
IRQ Delay
Delay from TX/RX line signals a wakeup event
to when the line returns to its normal function
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