NXP Semiconductors
UM10858
PN7462 family HW user manual
UM10858
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© NXP B.V. 2018. All rights reserved.
User manual
COMPANY PUBLIC
Rev. 1.4 — 14 May 2018
314514
109 of 345
Table 127. PCR_SELECT_SYSTEMCLOCK_REG (address offset 0xEC)
Bit
Symbol
Access
Value
Description
31:3
RESERVED
rw
0x00
Reserved
2:0
SELECT_SYSTEMCLOCK
rw
0x01
Selects the clock source
001: clkHFO (20 MHz)
010: clkUSBPLL/2 (24 MHz) (internal test purpose)
100: clkXtal (27.12 MHz) (internal test purpose)
Others: INVALID
Table 128. PCR_ADV_RFLD_REG (address offset 0xF0)
Bit
Symbol
Access
Value
Description
31:25
RESERVED
rw
0x00
Reserved
24:20
ADV_RFLD_IBIAS_TIME
rw
0x00
Ibias Boot up Time
19
ADV_RFLD_BYPASS_FRE
Q_CHECK
rw
0x00
bypass the digital frequency check in case of malfunction
of frequency check
1: Disable Frequency check during RF level detection
18
ADV_RFLD_BYPASS
rw
0x00
enable Bypass for pre-amplifier. To be set if normal RF
Level detector is used for
1: Disable Pre-Amplifier
17:16
ADV_RFLD_PREAMP_GAI
N
rw
0x00
gain setting for pre-amplifier
15:12
ADV_RFLD_CLKREC_TIM
E
rw
0x00
boot up time for clock recovery. Defines time between
switching on the clock recovery until frequency check is
enabled
11:7
ADV_RFLD_WAIT_TIME
rw
0x00
boot up time for advanced RF level detector. Defines
time between switching on the RF level detector until
field is checked.
6:0
ADV_RFLD_SLEEP_TIME
rw
0x00
defines the sleep Time (# LFO cycles) in the polling
circuit where the Advanced RF Level Detector is
switched off.
Table 129. PCR_ADV_RFLD_TEST_REG (address offset 0xF4)
Bit
Symbol
Access
Value
Description
31:3
RESERVED
rw
0x00
Reserved
2
ADV_RFLD_TEST_BYPAS
S_FIELDDET
rw
0x00
bypass the field detection during SLEEP time
1: Bypass field detection during SLEEP time
0: Field detection enabled during SLEEP time
1
ADV_RFLD_TEST_PREAM
P_ENABLE
rw
0x00
Enables the advanced RF level detector during standby
mode. The RF level detector as wake-up source must be
enabled to use this feature.
1: Enable Pre-amplifier
0: Disable Pre-amplifier for RF level detection