Data Format - Hitachi H8/3008 Hardware Manual

H8/3008
Card-processing device
Figure 13.2 Smart Card Interface Connection Diagram
Note: Setting both TE and RE to 1 without connecting a smart card enables closed
transmission/reception, allowing self-diagnosis to be carried out.
13.3.3

Data Format

Figure 13.3 shows the smart card interface data format. In reception in this mode, a parity check is
carried out on each frame, and if an error is detected an error signal is sent back to the transmitting
device to request retransmission of the data. In transmission, the error signal is sampled and the
same data is retransmitted.
380
TxD
RxD
SCK
Px (port)
chip
V
CC
I/O
Data line
CLK
Clock line
RST
Reset line
Smart card