Datasheet
PN512 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 5.2 — 16 June 2016
111352 62 of 137
NXP Semiconductors
PN512
Full NFC Forum-compliant frontend
8.2.4.2 TestSel1Reg
General test signal configuration.
8.2.4.3 TestSel2Reg
General test signal configuration and PRBS control
Table 113. TestSel1Reg register (address 31h); reset value: 00h, 00000000b
7 6 5 4 3 2 1 0
- - SAMClockSel SAMClkD1 TstBusBitSel
Access
Rights
r/w r/w r/w r/w r/w r/w r/w r/w
Table 114. Description of TestSel1Reg bits
Bit Symbol Description
7 to 6 - Reserved for future use.
5 to 4 SAMClockSel Defines the source for the 13.56 MHz SAM clock
Value Description
00 GND- Sam Clock switched off
01 clock derived by the internal oscillator
10 internal UART clock
11 clock derived by the RF field
3 SAMClkD1 Set to logic 1, the SAM clock is delivered to D1.
Note: Only possible if the 8bit parallel interface is not used.
2 to 0 TstBusBitSel Select the TestBus bit from the testbus to be propagated to SIGOUT.
Table 115. TestSel2Reg register (address 32h); reset value: 00h, 00000000b
7 6 5 4 3 2 1 0
TstBusFlip PRBS9 PRBS15 TestBusSel
Access
Rights
r/w r/w r/w r/w r/w r/w r/w r/w
Table 116. Description of TestSel2Reg bits
Bit Symbol Description
7 TstBusFlip If set to logic 1, the testbus is mapped to the parallel port by the
following order:
D4, D3, D2, D6, D5, D0, D1. See Section 19 “
Testsignals”.
6 PRBS9 Starts and enables the PRBS9 sequence according ITU-TO150.
Note: All relevant registers to transmit data have to be configured
before entering PRBS9 mode.
Note: The data transmission of the defined sequence is started by the
send command.
5 PRBS15 Starts and enables the PRBS15 sequence according ITU-TO150.
Note: All relevant registers to transmit data have to be configured
before entering PRBS15 mode.
Note: The data transmission of the defined sequence is started by the
send command.
4 to 0 TestBusSel Selects the testbus. See Section 19 “
Testsignals”