DS_1217F_002
73S1217F Data Sheet
1.7.17.6
Smart Card SFRs
Smart Card Select Register (SCSel): 0xFE00 Å 0x00
The Smart Card Select register is used to determine which smart card interface is using the ISO UART.
The internal Smart Card has integrated 7816-3 compliant sequencer circuitry to drive an external smart
card interface. The external smart card interface relies on 73S8010x parts to generate the ISO 7816-3
compatible signals and sequences. Multiple 73S8010x devices can be connected to the external smart
card interface.
Table 79: The SCSel Register
MSB
LSB
–
–
–
–
SELSC.1 SELSC.0 BYPASS
–
Bit
Symbol
Function
SCSel.7
SCSel.6
SCSel.5
SCSel.4
–
–
–
–
Select Smart Card Interface – These bits select the interface that is using
the IS0 UART. These bits do not activate the interface. Activation is
performed by the VccCtl register.
SCSel.3
SCSel.2
SELSC.1
SELSC.0
00 = No smart card interface selected.
01 01 = External Smart Card Interface selected (using SCLK, SIO).
02 1X = Internal Smart Card Interface selected.
1 = Enabled, 0 = Disabled. When enabled, ISO UART is bypassed and the
I/O line is controlled via the SCCtl and SCECtl registers.
SCSel.1
SCSel.0
BYPASS
–
Rev. 1.2
89
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
