NXP Semiconductors UM11227 - Tab. 107. RFM Control 2 Register (RFCR2) (Address $1832); Tab. 108. RFCR2 Register Field Descriptions; 3 RFM Control 2 Register (RFCR2)

NXP Semiconductors
UM11227
NTM88 family of tire pressure monitor sensors
UM11227 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 6 — 24 April 2020
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10.16.11.3 RFM control 2 register (RFCR2)
Table 107. RFM control 2 register (RFCR2) (address $1832)
Bit 7 6 5 4 3 2 1 0
R
SEND
status
W SEND
reserved reserved PWR4 PWR3 PWR2 PWR1 PWR0
Reset ($00) 0 0 0 0 0 0 0 0
Table 108. RFCR2 register field descriptions
Field Description
7
SEND
SEND – Start Transmit Control
The SEND control bit starts the transmission of data held in the RFM data buffer according to the bit
length specified by the FRM[7:0] bits. The SEND control bit is automatically cleared when the data buffer
transmission has ended or by the RFMRST signal. A transmission can be prematurely interrupted by writing
a logical zero to the SEND bit.
0 = Data transmission ended or transmission not in progress; Result of Reset
1 = Start data transmission or transmission in progress.
4:0
PWR[4:0]
PWR[4:0] – RF Transmit Power Selection
The PWR[4:0] control bits select the optimum power output of the RF power amplifier. These power output
levels assume optimal matching network to the RF pin. The PWR[4:0] control bits are cleared by an RFM
reset. This setting targets -10 dBm typical power output. The PWR control bits scale the typical output
power level from -1.5 dBm to 8 dBm in steps of 0.5 dB and fixes the low power level mode to -10 dBm.
00000 set output power level to –10 dBm (Result of reset)
00001 set output power level to –1.5 dBm
00010 set output power level to –1.0 dBm
00011 set output power level to –0.5 dBm
00100 set output power level to 0.0 dBm
00101 set output power level to 0.5 dBm
00110 set output power level to 1.0 dBm
00111 set output power level to 1.5 dBm
01000 set output power level to 2.0 dBm
01001 set output power level to 2.5 dBm
01010 set output power level to 3.0 dBm
01011 set output power level to 3.5 dBm
01100 set output power level to 4.0 dBm
01101 set output power level to 4.5 dBm
01110 set output power level to 5.0 dBm
01111 set output power level to 5.5 dBm
10000 set output power level to 6.0 dBm
10001 set output power level to 6.5 dBm
10010 set output power level to 7.0 dBm
10011 set output power level to 7.5 dBm
10100 set output power level to 8.0 dBm
Codes greater than 10100 are reserved for test purposes and should not be used.