h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 579
h8s-2635
Manufacturer Part Number
h8s-2635
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2635.pdf
(1547 pages)
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Smart Card Mode Register (SCMR) Setting: The SDIR bit is cleared to 0 if the IC card is of the
direct convention type, and set to 1 if of the inverse convention type.
The SINV bit is cleared to 0 if the IC card is of the direct convention type, and set to 1 if of the
inverse convention type.
The SMIF bit is set to 1 in the case of the Smart Card interface.
Examples of register settings and the waveform of the start character are shown below for the two
types of IC card (direct convention and inverse convention).
Direct convention (SDIR = SINV = O/
With the direct convention type, 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.
The parity bit is 1 since even parity is stipulated for the Smart Card.
Inverse convention (SDIR = SINV = O/
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 above is H'3F.
The parity bit is 0, corresponding to state Z, since even parity is stipulated for the Smart Card.
With the H8S/2636, H8S/2638, H8S/2639, and H8S/2630 inversion specified by the SINV bit
applies only to the data bits, D7 to D0. For parity bit inversion, the O/
odd parity mode (the same applies to both transmission and reception).
(Z)
(Z)
Ds
Ds
A
A
D0
D7
Z
Z
D1
D6
Z
Z
D2
D5
A
A
D3
D4
Z
A
E
E
= 0)
= 1)
D4
D3
Z
A
D5
D2
Z
A
Rev. 6.00 Feb 22, 2005 page 519 of 1484
D6
D1
A
A
Section 14 Smart Card Interface
D7
D0
A
A
Dp
Dp
E
Z
Z
bit in SMR is set to
(Z)
(Z)
REJ09B0103-0600
State
State
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