Datasheet

DS_1215F_003 73S1215F Data Sheet
Rev. 1.4 87
Smart Card SFRs
Smart Card Select Register (SCSel): 0xFE00 Å 0x00
Table 80: The SCSel Register
MSB LSB
– – – – SELSC.1 SELSC.0 BYPASS –
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 81: The SCSel Bit Functions
Bit Symbol Function
SCSel.7 –
SCSel.6 –
SCSel.5 –
SCSel.4 –
SCSel.3 SELSC.1
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.
00 = No smart card interface selected.
01 = External Smart Card Interface selected (using SCLK, SIO).
1X = Internal Smart Card Interface selected.
SCSel.2 SELSC.0
SCSel.1 BYPASS
1 = Enabled, 0 = Disabled. When enabled, ISO UART is
bypassed and the I/O line is controlled via the SCCtl and SCECtl
registers.
SCSel.0 –