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
173 of 345
Bit
Symbol
Access
Value
Description
17
T1_START_ON_RX_
STARTED
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when a
data reception begins (1st bit is received).
16
T1_START_ON_RX_
ENDED
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when a
data reception ends.
15
T1_START_ON_TX_
STARTED
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when a
data transmission begins.
14
T1_START_ON_TX_
ENDED
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when a
data transmission ends.
13
T1_START_ON_RF_
ON_EXT
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when the
external RF field is detected.
12
T1_START_ON_RF_
OFF_EXT
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when the
external RF field is not detected any more.
11
T1_START_ON_RF_
ON_INT
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when an
internal RF field is turned on.
10
T1_START_ON_RF_
OFF_INT
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when an
internal RF field is turned off.
9
T1_START_ON_SIG
IN_ACT
R/W
0*, 1
T1_START_EVENT: If set, the timer T1 is started when an
activity on SigIn is detected.
8
T1_START_NOW
D
0*, 1
T1_START_EVENT: If set, the timer T1 is started
immediately.
7:6
RESERVED
R
0
Reserved
5:3
T1_PRESCALE_SEL
R/W
0h-7h
Controls frequency/period of the timer T1 when the prescaler
is activated in T1_MODE_SEL.
000
6.78 MHz counter
001
3.39 MHz counter
010
1.70 MHz counter
011
848 kHz counter
100
424 kHz counter
101
212 kHz counter
110
106 kHz counter
111
53 kHz counter
2
T1_MODE_SEL
R/W
0 – 1
Configuration of the timer T1 clock.
0*
Prescaler is disabled: the timer frequency matches CLIF
clock frequency (13.56MHz).
1
Prescaler is enabled: the timer operates on the prescaler
signal frequency (chosen by
T1_PRESCALE_SEL
).
1
T1_RELOAD_ENAB
LE
R/W
0*, 1
If set to 0, the timer T1 will stop on expiration.
0*
After expiration, the timer T1 will stop counting, i.e., remain
zero, reset value.
1
After expiration, the timer T1 will reload its preset value and
continue counting down.
0
T1_ENABLE
R/W
0*, 1
Enables the timer T1