h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 439

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

13.7.2
Figure 13.22 shows the transfer data format in smart card interface mode.
• One frame consists of 8-bit data plus a parity bit in asynchronous mode.
• In transmission, a guard time of at least 2 etu (Elementary Time Unit: the time for transfer of
• If a parity error is detected during reception, a low error signal level is output for one etu
• If an error signal is sampled during transmission, the same data is retransmitted automatically
Data transfer with other types of IC cards (direct convention and inverse convention) are
performed as described in the following.
one bit) is left between the end of the parity bit and the start of the next frame.
period, 10.5 etu after the start bit.
after a delay of 2 etu or longer.
When there is no parity error
When a parity error occurs
Data Format (Except for Block Transfer Mode)
[Legend]
DS:
D0 to D7:
Dp:
DE:
(Z)
Figure 13.23 Direct Convention (SDIR = SINV = O/E = 0)
Ds
Ds
Figure 13.22 Normal Smart Card Interface Data Format
Start bit
Data bits
Parity bit
Error signal
Ds
A
D0
D0
D0 D1 D2 D3 D4 D5 D6 D7 Dp
Z
D1
D1
Z
Transmitting station output
Transmitting station output
D2
D2
A
Z
D3
D3
Z
D4
D4
Z
D5
D5
Section 13 Serial Communication Interface (SCI)
A
D6
D6
A
Rev. 2.00 Dec. 05, 2005 Page 401 of 724
Z
D7
D7
Dp
Dp
(Z) State
Receiving station
output
DE
REJ09B0200-0200