UM_8009C_059
73S8009C Demo Board User Manual
Rev. 1.3
7
2 Connections
This section describes the 73S8009C Demo Board external connectors. All the digital signals and power
supply connections are made through 10-pin header connectors labeled J2 and J4 in Figure 2.
Figure 2: 73S8009C Demo Board External Connectors
Table 3 describes the pins for the J4 connector. There is one power pin (Pin 1) and one ground pin (Pin 9).
Table 3: J4 Pin Descriptions
Pin
Pin Name
Function
1
CMDVCC%
Controls the turn-on, output voltage value, and turn-off of V
CC
.
2
CMDVCC#
3
RSTIN
Controls the card reset signal.
4
RDY
Indicates when smart card power supply is stable and ready.
5
OFF_ACK
Setting OFF_ACK high powers “off” all analog functions and
disconnects the 73S8009C from V
BAT
or V
PC
.
6
OFF_REQ
Digital output. Request to the host system controller to turn
the 73S8009C off.
7
CS
Chip Select – active high.
8
N/C
No Connect.
9
GND
Ground.
10
VDD
System interface supply voltage and supply voltage for
companion controller circuitry.
