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ATA5425-PLSW Datasheet(PDF) 38 Page - ATMEL Corporation

Part # ATA5425-PLSW
Description  UHF ASK/FSK Transceiver
PDF  100 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATA5425-PLSW Datasheet(HTML) 38 Page - ATMEL Corporation

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4841D–WIRE–10/07
ATA5423/ATA5425/ATA5428/ATA5429
7.3
Control Register
To use the transceiver in different applications, it can be configured by a connected microcon-
troller via the 4-wire serial interface.
7.3.1
Control Register 1 (ADR 0)
Table 7-1.
Control Register 1 (Function of Bit 7 and Bit 6 in RX Mode)
IR1
IR0
Function (RX Mode)
00
Pin IRQ is set to “1” if 4 received bytes are in the TX/RX data buffer or a receiving error
occurred
01
Pin IRQ is set to “1” if 8 received bytes are in the TX/RX data buffer or a receiving error
occurred
10
Pin IRQ is set to “1” if 12 received bytes are in the TX/RX data buffer or a receiving error
occurred (default)
1
1
Pin IRQ is set to “1” if a receiving error occurred
Table 7-2.
Control Register 1 (Function of Bit 7 and Bit 6 in TX Mode)
IR1
IR0
Function (TX Mode)
0
0
Pin IRQ is set to “1” if 4 bytes remain in the TX/RX data buffer or the TX data buffer is empty
0
1
Pin IRQ is set to “1” if 8 bytes remain in the TX/RX data buffer or the TX data buffer is empty
10
Pin IRQ is set to “1” if 12 bytes remain in the TX/RX data buffer or the TX data buffer is
empty (default)
1
1
Pin IRQ is set to “1” if the TX data buffer is empty
Table 7-3.
Control Register 1 (Function of Bit 5)
AVCC_EN
Function
0
(default)
1
Enables AVCC, if the ATA5423/ATA5425 is in AUX mode
Table 7-4.
Control Register 1 (Function of Bit 4)
FS
Function (RX Mode, TX Mode)
0
Selected frequency 345/433/868/915 MHz (default)
1
Selected frequency 315 MHz
Table 7-5.
Control Register 1 (Function of Bit 2 and Bit 1)
OPM1
OPM0
Function
0
0
IDLE mode (default)
0
1
TX mode
1
0
RX polling mode
11
RX mode



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