HD6432621 Hitachi, HD6432621 Datasheet - Page 544

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

14.3.3
(1) Normal Transfer Mode
Figure 14-3 shows the normal 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 end, and retransmission of the data is requested. If an error signal is sampled during
transmission, the same data is retransmitted.
500
When there is no parity error
When a parity error occurs
Legend
Ds
D0 to D7
Dp
DE
Data Format
: Start bit
: Data bits
: Parity bit
: Error signal
Ds
Ds
Figure 14-3 Normal Smart Card Interface Data Format
D0
D0
D1
D1
D2
D2
Transmitting station output
Transmitting station output
D3
D3
D4
D4
D5
D5
D6
D6
D7
D7
Dp
Dp
Receiving station
output
DE