Register Descriptions; Mode Control Register (Mdcr); System Control Register (Syscr) - Renesas Hitachi H8S/2194 Series Hardware Manual

3.2

Register Descriptions

3.2.1

Mode Control Register (MDCR)

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)

Bit :
Initial value :
R/W :
Bits 7 and 6: Reserved.
Rev. 2.0, 11/00, page 60 of 1037
7 6 5
—
— —
0 0 0
—
— —
7 6 5
INTM1
— —
0 0 0
— —
R
4 3
— — —
0 0
— — —
4 3
INTM0 XRST NMIEG1 NMIEG0
0 1
R/W R R/W
2 1 0
—
MDS0
0 0 —*
— R
2 1 0
—
0 0 1
—
R/W