Renesas Hitachi H8S/2191, Hardware Manual

Page: 87 / 1065

Rev. 2.0, 11/00, page 60 of 1037
3.2 Register Descriptions
3.2.1 Mode Control Register (MDCR)
0
— *
1
0
2
0
3
0
4
0
5
— — — — —
0
6
—
0
7
—
— — — — — —
— R
MDS0
0
Bit :
Initial value :
R/W :
Note: * Determined by MD0 pin
MDCR is an 8-bit read-only register monitors the current operating mode of this LSI.
Bit 7 to 1: Reserved.
These bits cannot be modified and are always set at 0.
Bit 0: Mode Select 0 (MDS0)
This bit indicates the value which reflects the input levels at mode pin (MD0) (the current
operating mode). Bit MDS0 corresponds to MD0 pin. It is read-only bit and cannot be written
to. The mode pin (MD0) input levels are latched into these bits when MDCR is read.
3.2.2 System Control Register (SYSCR)
0
—
1
1
0
R/W
2
0
R/W
3
1
4
0
R/W
5
0
6
—
0
7
—
— — —
R R
INTM1 INTM0 XRST NMIEG1 NMIEG0
0
Bit :
Initial value :
R/W :
Bits 7 and 6: Reserved.