h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 398

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 14 Serial Communication Interface (SCI)
Data transfer with other types of IC cards (direct convention and inverse convention) are
performed as described in the following.
(Z)
A
Z
Z
A
Z
Z
Z
A
A
Z
(Z) State
Ds
D0
D1
D2
D3
D4
D5
D6
D7
Dp
Figure 14.23 Direct Convention (SDIR = SINV = O/
= 0)
E
With the direction convention type IC and the above sample start character, the logic 1 level
corresponds to state Z and the logic 0 level to state A, and transfer is performed in LSB-first order.
The start character data above is H'3B. For the direct convention type, clear the SDIR and SINV
bits in SCMR to 0. According to Smart Card regulations, clear the O/
bit in SMR to 0 to select
E
even parity mode.
(Z)
A
Z
Z
A
A
A
A
A
A
Z
(Z) State
Ds
D7
D6
D5
D4
D3
D2
D1
D0
Dp
Figure 14.24 Inverse Convention (SDIR = SINV = O/
= 1)
E
With the inverse convention type, the logic 1 level corresponds to state A and the logic 0 level to
state Z, and transfer is performed in MSB-first order. The start character data for the above is
H'3F. For the inverse convention type, set the SDIR and SINV bits in SCMR to 1. According to
Smart Card regulations, even parity mode is the logic 0 level of the parity bit, and corresponds to
state Z. In this LSI, the SINV bit inverts only data bits D7 to D0. Therefore, set the O/
bit in
E
SMR to 1 to invert the parity bit for both transmission and reception.
Rev. 3.00 Oct 04, 2005 page 358 of 598
REJ09B0155-0300