GDC21D601 Datasheet, PDF (141/189 Pages) Hynix Semiconductor – 32-Bit RISC MCU

GDC21D601
Section 16. Smart Card Interface
1. General Description
The smart card interface block is basically a general-purpose serial interface block that has the smart card interface
features additionally. And some ports of GPIO are necessary to provide complete interfaces to the smart card. As a
general-purpose serial interface, it has the UART(16550) compatible register sets and bit definitions although it
doesn’t have the modem control pins.
As a smart card interface, it has the following general features.
• Supports only asynchronous operation.
• Supports cards that have internal reset capability.
• Supports cards that have an active low reset input.
• Supports cards that use the internal clock.
• Generate the clock for a card expecting the external clock.
• Use the serial in/out ports for I/O.
• Use the GPIO ports for other interface signals like RST, DETECT, etc.
nB-RES
U_CLK
INT_SCIF
P_SEL
P_WRITE
P_STB
P_A[3:0]
P_D[7:0]
APB
Interface
Smart Card
Interface
SMCLK
SMDOEN
SMDO
SMDI
SMART
CARD
Figure 1. Signal Connections of the SMART CARD Interface
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