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NXP Semiconductors
Table 245. Contact Smart card pins – Main slot
Pins description for the main contact smart card slot
Pin name
VBUSP
GNDP
SAM/SAP
VUP
VCC
GNDC
RST
CLK
IO
AUX1
AUX2
PRESN
Table 246. Contact Smart card pins – Auxiliary slots
Pins description for the auxiliary contact smart card slots
Pin name
CLK_AUX
IO_AUX
INT_AUX
I2C
MASTER_S
DA
I2C
MASTER_S
CL
GPIOx
UM10858
User manual
COMPANY PUBLIC
Pin n°
Description
48
PN7462 family for the contact
smart card interface
45
Power supply main ground pin
46/49
DC-to-DC converter capacitor
pins
50
DC-to-DC converter power
output pin
51
Smart card power supply
54
Ground pin for the smart card
52
Reset pin for the smart card
53
Clock output to the smart card
57
Data pin to/from smart card
55
C4 smart card pin
56
C8 smart card pin
5
Presence detection for the
smart card.
Pin n°
Description
2
Output clock to the external
TDA device
3
Data pin to/from smart card
4
Interrupt input from the external
TDA
1
SDA Master line to control the
TDA
64
SCL Master line to control the
TDA
X
GPIOs to control the TDA
All information provided in this document is subject to legal disclaimers.
Rev. 1.4 — 14 May 2018
314514
UM10858
PN7462 family HW user manual
Specific requirement
Must be > 3 V for Class A cards
Must be connected with a short and low
resistive connection to the PCB main
ground plane
Connected together through a 470 nF
capacitor. Needed to generate a 5V
power supply out of a > 3 V VBUSP
Must be connected to a capacitor,
connected to GNDP. Connection to
GNDP must be as short as possible
Must be decoupled through 2 capacitors
Must be connected to the smart card
connector, and to the main PCB ground
plane
Referenced to PVDD_IN
Specific requirement
To be connected to the external TDA
IOUC pin
To be connected to the interrupt output
from the TDA (INT or OFFN, depending
on the TDA type)
Needed for a TDA8023 or TDA8026
Needed for a TDA8023 or TDA8026
Needed for TDA with GPIO interface as
TDA8035/8034/8037
© NXP B.V. 2018. All rights reserved.
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