AT86RF231
11.7.2
Register Description
Register 0x04 (TRX_CTRL_1):
The TRX_CTRL_1 register is a multi purpose register to control various operating modes and
settings of the radio transceiver.
Bit
7
6
5
4
3
2
1
0
+0x04
Read/Write
Reset Value
PA_EXT_EN
R/W
0
IRQ_2_EXT_EN
R/W
0
TX_AUTO_CRC_ON
R/W
1
RX_BL_CTRL
R/W
0
SPI_CMD_MODE
R/W
0
IRQ_MASK_MODE
R/W
0
IRQ_POLARITY
R/W
0
TRX_CTRL_1
? Bit 7 - PA_EXT_EN
Refer to Section 11.5 “RX/TX Indicator” on page 147 .
? Bit 6 - IRQ_2_EXT_EN
Refer to Section 11.6 “RX Frame Time Stamping” on page 150 .
? Bit 5 - TX_AUTO_CRC_ON
Refer to Section 8.2 “Frame Check Sequence (FCS)” on page 85.
? Bit 4 - RX_BL_CTRL
If this register bit is set the Frame Buffer Empty Indicator is enabled. After sending a Frame Buf-
fer read command, refer to Section 6.2 “SPI Protocol” on page 19 , pin 24 (IRQ) indicates to the
microcontroller that an access to the Frame Buffer is not possible since valid PSDU data are
missing.
Pin IRQ does not indicate any interrupts during this time.
Table 11-16. Frame Buffer Empty Indicator
Register Bit
RX_BL_CTRL
Value
0
1
Description
Frame Buffer Empty Indicator disabled
Frame Buffer Empty Indicator enabled
? Bit [3:2] - SPI_CMD_MODE
Refer to Section 6.3 “Radio Transceiver Status information” on page 24 .
? Bit 1 - IRQ_MASK_MODE
Refer to Section 6.6 “Interrupt Logic” on page 29 .
? Bit 0 - IRQ_POLARITY
Refer to Section 6.6 “Interrupt Logic” on page 29 .
153
8111C–MCU Wireless–09/09
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