Rainbow Electronics ATmega128RFA1 - Manual (Page 105)

105
8266A-MCU Wireless-12/09
ATmega128RFA1
A write access to register bits TRX_CMD initiates a state transition of the radio
transceiver towards the new state as defined by the write access. Do not try to initiate a
further
state change while the radio transceiver is in
STATE_TRANSITION_IN_PROGRESS state (see TRX_STATUS register).
FORCE_PLL_ON is not valid for the SLEEP state as well as during
STATE_TRANSITION_IN_PROGRESS towards the SLEEP state. Values not listed in
the following table are reserved and mapped to NOP.
Table 9-35 TRX_CMD Register Bits
Register Bits Value Description
0x00 NOP
0x02 TX_START
0x03 FORCE_TRX_OFF
0x04 FORCE_PLL_ON
0x06 RX_ON
0x08 TRX_OFF
0x09 PLL_ON (TX_ON)
0x16 RX_AACK_ON
TRX_CMD4:0
0x19 TX_ARET_ON
9.12.7 TRX_CTRL_0 – Reserved
Bit 7 6 5 4 3 2 1 0
NA ($143) Res7 Res6 Res5 Res4 Res3 Res2 Res1 Res0 TRX_CTRL_0
Read/Write RW RW RW RW RW RW RW RW
Initial Value 0 0 0 1 1 0 0 1
This register is reserved for future use.
• Bit 7:0 – Res7:0 - Reserved
These bits are reserved for future use.
9.12.8 TRX_CTRL_1 – Transceiver Control Register 1
Bit 7 6 5 4
NA ($144) PA_EXT_EN IRQ_2_EXT_EN TX_AUTO_CRC_ON Res4 TRX_CTRL_1
Read/Write RW RW RW R
Initial Value 0 0 1 0
Bit 3 2 1 0
NA ($144) Res3 Res2 Res1 Res0 TRX_CTRL_1
Read/Write R R R R
Initial Value 0 0 0 0
The TRX_CTRL_1 register is a multi purpose register to control various operating
modes and settings of the radio transceiver.
• Bit 7 – PA_EXT_EN - External PA support enable