NXP Semiconductors PN7462 series User Manual page 170

NXP Semiconductors
Bit Symbol
1 RX_CRC_INV
0 RX_CRC_ENABLE
Table 208. CLIF_CRC_TX_ CONFIG_REG register (address 0070h)
* = reset value
Bit Symbol
31:16 TX_CRC_PRESET_
VALUE
15:7 RESERVED
6 TX_CRC_BYTE2_E
NABLE
5:3 TX_CRC_PRESET_
SEL
2 TX_CRC_TYPE
1 TX_CRC_INV
0 TX_CRC_ENABLE
UM10858
User manual
COMPANY PUBLIC
Access Value
D 0, 1
0*
1
D 0*, 1
Access Value
R/W 0*- FFFFh
R 0
R/W 0*, 1
R/W 000-101b
000b*
001b
010b
011b
100b
101b
110b
111b
R/W 0, 1
0*
1
R/W 0, 1
0*
1
R/W 0*, 1
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Rev. 1.4 — 14 May 2018
314514
PN7462 family HW user manual
Description
Controls the comparison of the CRC checksum for the
Rx-Decoder
Not inverted CRC value: 0000h, reset value
Note: That this nit is cleared by the Mode detector for
ISO14443 type A and FeliCa.
Inverted CRC value: F0B8h
Note: That this bit is set by the Mode detector for ISO14443
type B.
If set, the Rx-Decoder will check the CRC for correctness.
Note: That this bit is set by the Mode Detector, when
ISO14443 type B, or FeliCa (212 or 424kBd) is detected.
Description
Arbitrary preset value for the Tx-Encoder CRC calculation.
Reserved
If set, the CRC is calculated from the 2nd byte onwards
(intended for HID).
Note: That this option is used in the Tx-Encoder.
Preset value of the CRC register for the Tx-Encoder. For a
CRC calculation using 5bits, only the LSByte is used.
0000h, reset value
6363h
A671h
FFFFh
0012h
E012h
reserved
Use arbitrary preset value TX_CRC_PRESET_VALUE
Controls the type of CRC calculation for the
16-bit CRC calculation, reset value
5-bit CRC calculation
Controls the sending of an inverted CRC value by the Tx-
Encoder
Controls the sending of an inverted CRC value by the Tx-
Encoder
Inverted CRC checksum
If set to one, the Tx-Encoder will compute and transmit a
CRC.
UM10858
Tx-Encoder
© NXP B.V. 2018. All rights reserved.
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