Data Format - Renesas H8S/2319 series Hardware Manual

13.3.3

Data Format

Normal Transfer Mode: Figure 13-3 shows the smart card interface data format in the normal
transfer mode. In reception in this mode, a parity check is carried out on each frame. 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.
When there is no parity error
Ds
When a parity error occurs
Ds
Legend:
Ds : Start bit
D0 to D7 : Data bits
Dp : Parity bit
DE : Error signal
Rev. 5.00, 12/03, page 498 of 1088
D0 D1 D2 D3
Transmitting station output
D0 D1 D2 D3
Transmitting station output
Figure 13-3 Smart Card Interface Data Format
D4 D5 D6 D7
D4 D5 D6 D7
Dp
Dp DE
Receiving station
output