HD64F2638F20J Datasheet, PDF (573/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 14 Smart Card Interface
14.2.4 Serial Control Register (SCR)
Bit
:
7
6
5
4
3
2
1
0
TIE
RIE
TE
RE
MPIE TEIE CKE1 CKE0
Initial value :
0
0
0
0
0
0
0
0
R/W
: R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
In smart card interface mode, the function of bits 1 and 0 of SCR changes when bit 7 of the serial
mode register (SMR) is set to 1.
Bits 7 to 2—Operate in the same way as for the normal SCI.
For details, see section 13.2.6, Serial Control Register (SCR).
Bits 1 and 0—Clock Enable 1 and 0 (CKE1, CKE0): These bits are used to select the SCI clock
source and enable or disable clock output from the SCK pin.
In smart card interface mode, in addition to the normal switching between clock output enabling
and disabling, the clock output can be specified as to be fixed high or low.
SCMR
SMIF
0
1
1
1
SMR
SCR Setting
C/A, GM CKE1
CKE0
See the SCI
0
0
0
0
0
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
SCK Pin Function
Operates as port I/O pin
Outputs clock as SCK output pin
Operates as SCK output pin, with output fixed
low
Outputs clock as SCK output pin
Operates as SCK output pin, with output fixed
high
Outputs clock as SCK output pin
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 523 of 1458