PN5120A0HN1/C1 NXP Semiconductors, PN5120A0HN1/C1 Datasheet - Page 85

• Manufacturer Part Number: PN5120A0HN1/C1
• Description: RF Wireless Misc COMBO ANALOG/DIGI IC
• Manufacturer: NXP Semiconductors
• Type: Transmission Moduler

Specifications of PN5120A0HN1/C1

• Package / Case: HVQFN EP
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 30 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PN5120A0HN1/C1,157

NXP Semiconductors
111334
Product data sheet
11.6.1 Signal shape for Felica S
The FeliCa secure IC is connected to the PN512 via the pins SIGOUT and SIGIN.
The signal at SIGOUT contains the information of the 13.56 MHz clock and the digitized
demodulated signal. The clock and the demodulated signal is combined by using the
logical function exclusive or.
To ensure that this signal is free of spikes, the demodulated signal is digitally filtered first.
The time delay for that digital filtering is in the range of one bit length. The demodulated
signal changes only at a positive edge of the clock.
The register TxSelReg controls the setting at SIGOUT.
The answer of the FeliCa SAM is transferred from SIGIN directly to the antenna driver.
The modulation is done according to the register settings of the antenna drivers.
The clock is switched to AUX1 or AUX2 (see AnalogSelAux).
Note: A HIGH signal on AUX1 and AUX2 has the same level as AVDD. A HIGH signal at
SIGOUT has the same level as SVDD. Alternatively it is possible to use pin D0 as clock
output if a serial interface is used. The HIGH level at D0 is the same as PVDD.
Note: The signal on the antenna is shown in principle only. In reality the waveform is
sinusoidal.
Fig 31. Signal shape for SIGOUT in FeliCa card SAM mode
Fig 32. Signal shape for SIGIN in SAM mode
clock
demodulated
signal
signal on
SIGOUT
Clock
Signal on
SIGIN
Signal on
antenna
Rev. 3.4 — 8 September 2009
2
C interface support
Transmission Module
© NXP B.V. 2010. All rights reserved.
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