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
161 of 345
Bit
Symbol
Access
Value
Description
Note
: Bits are skipped at the end of the byte
11:9
TX_FIRST_BITS
R/W
0*- 7
Defines how many bits of the first data byte to be sent.
If set to 000b all bits of the last data byte are sent.
Note
: Bits are skipped at the beginning of the byte
8:0
TX_NUM_BYTES_2
_SEND
R/W
0 - 104h
Defines the number of bytes to be transmit. The maximum
number of bytes is 260 (0x104).
If the Transmission Of Data Is Enabled
(TX_DATA_ENABLE) and TX_NUM_BYTES_2_SEND is
zero, then a NO_DATA_ERROR occurs.
Table 196. CLIF_TX_DATA_MOD_REG register (address 0034h)
* = reset value
Bit
Symbol
Access
Value
Description
31:24
RESERVED
R
0
Reserved
23:16
TX_DATA_MOD_WIDT
H
R/W
0* - FFh
Specifies the length of a pulse for sending data with miller
pulse modulation enabled. The length is given by the
number of carrier 1.
15:9
RESERVED
R
0
Reserved
8
TX_DATA_MILLER_EN
ABLE
R/W
0*, 1
If set to 1, pulse modulation is applied according to modified
miller coding
7
TX_DATA_INV_ENV
R/W
0*, 1
If set to 1, the output envelope is inverted
6:4
TX_DATA_ENV_TYPE
R/W
0*, 7h
Specifies the type of envelope used for transmission of data
packets. The selected envelope type is applied to the pseudo
bit stream.
000
Direct output
001
Manchester code
010
Manchester code with subcarrier
011
BPSK
100
RZ (pulse of half bit length at beginning of second half of bit)
101
RZ (pulse of half bit length at beginning of bit)
110
Manchester tuple coding
111
Reserved
3
TX_DATA_SC_FREQ
R/W
0*, 1
Specifies the frequency of the subcarrier.
0
424 kHz
1
848 kHz
2:0
TX_DATA_BIT_FREQ
R/W
0* - 7h
Specifies the frequency of the bit-stream.
000
1.695 MHz
001
3.39 MHz
010
26 kHz
011
53 kHz
100
106 kHz