NXP Semiconductors
UM10858
PN7462 family HW user manual
UM10858
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2018. All rights reserved.
User manual
COMPANY PUBLIC
Rev. 1.4 — 14 May 2018
314514
182 of 345
Bit
Symbol
Access
Value
Description
6
TX2_INV_CM
R/W
0*, 1
if 1 -> TX output is inverted (clk_13m56_n is used); 0
-> clk_13m56 is used
5
TX1_INV_RM
R/W
0*, 1
if 1 -> TX output is inverted (clk_13m56_n is used); 0
-> clk_13m56 is used
4
TX1_INV_CM
R/W
0*, 1
if 1 -> TX output is inverted (clk_13m56_n is used); 0
-> clk_13m56 is used
3:1
TX_CLK_MODE_RM R/W
0-7h,1*
TX clockmode
0
TX_PD_CLK_GEN
R/W
0, 1*
TX clock generation disabled and thus also envelope
synchronization to clk is disabled. Only valid in combination
with the corresponding override bit. In normal operation, the
pd is controlled by HW.
Table 229. CLIF_ANA_TX_AMPLITUDE_REG register (address 0108h)
* = reset value
Bit
Symbol
Access
Value
Description
31:28
TX_GSN_CW_RM
R/W
0* - Fh
gsn settings @ continuous wave in reader mode
0000: lowest power level
1111: highest power level
27:24
INTERNAL_USE
R/W
0* - Fh
For internal use
23:20
INTERNAL_USE
R/W
0* - Fh
For internal use
19:16
INTERNAL_USE
R/W
0* - Fh
For internal use
15
RESERVED
R
0
Reserved
14
TX_ASKMODE_SEL
ECT
R/W
0* - 1
Selects the output voltage mode if the transmitter.
Default value is 1
0
Setting used for ALM mode: TX output voltage is
independent of the envelope and hence TX output amplitude
can be adjusted by the bitfield
TX_RESIDUAL_CARRIER (0X1F is maximum, 0x00
minimum amplitude)
1
Setting used for standard modes (reader and active mode)
13:12
TX_CW_AMPLITUD
E_RM
R/W
0* - 3h
sets amplitude of unmodulated carrier (continuous wave) @
reader mode
0
Amplitude is set to TVDD - 150 mV
1
Amplitude is set to TVDD - 250 mV
2
Amplitude is set to TVDD - 500 mV
3
Amplitude is set to TVDD - 1000 mV
11:10
RESERVED
R
0
Reserved
9:8
TX_CW_AMPLITUD
E_ALM_CM
R/W
0* - 3h
Set amplitude of unmodulated carrier @ card mode
7:3
TX_RESIDUAL_CAR
RIER
R/W
0* - 1Fh
Set residual carrier (0=100 %, 1F = 0 %)