†
Table 2−19. Smart Card Terminals
If any Smart Card terminal is unused, then the terminal may be left floating, except for SC_VCC_5V which must be
connected to 5 V.
TERMINAL
I/O
TYPE
PU/
PD
POWER
RAIL
EXTERNAL
PARTS
DESCRIPTION
INPUT OUTPUT
NAME
NO.
Smart Card card detect. This input is asserted when Smart
Cards are inserted.
SC_CD
L02
I
TTLI2
SW2
VCC
22 kΩ resistor to
GND
68 pF capacitor
to GND
Smart Card clock. The controller drives a 3-MHz clock to the
Smart Card interface when enabled.
SC_CLK
K05
O
PCIO8
SC_DATA
SC_OC
L01
L03
Smart Card data input/output
I/O
I
PCII5
LVCI1
PCIO5
SW3
PU2
Smart Card overcurrent. This input comes from the Smart
Card power switch.
5 V
Power switch or
FET to turn on
power to FM
socket
SC_PWR_CTRL
SC_FCB
L05
K02
Smart Card power control for the Smart Card socket.
O
I
LVCO1
PCIO5
Smart Card function code. The controller does not support
synchronous Smart Cards as specified in ISO/IEC 7816-10,
and this terminal is in a high-impedance state.
PCII5
SW3
SC_GPIO6
SC_GPIO5
SC_GPIO4
SC_GPIO3
SC_GPIO2
SC_GPIO1
SC_GPIO0
H03
J06
J01
J02
J03
J05
J07
Smart Card general-purpose I/O terminals. These signals
can be controlled by firmware and are used as control
signals for an external Smart Card interface chip or level
shifter.
I/O
TTLI2
PCII5
TTLO2
SW2
SW3
5 V
5 V
Smart Card reserved. This terminal is in a high-impedance
state.
SC_RFU
K01
K03
K07
I
PCIO5
PCIO6
Smart Card This signal starts and stops the Smart Card
reset sequence. The controller asserts this reset when
requested by the host.
SC_RST
O
1 kΩ resistor to
5 V
SC_VCC_5V
Smart Card power terminal
PWR
†
These terminals are reserved for the PCI6421 and PCI6411 controllers.
2−28
TI [ TEXAS INSTRUMENTS ]
