h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 616

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 18A Host Interface X-Bus Interface (XBS)
18A.2.3 Host Interface Control Register (HICR)
HICR is an 8-bit readable/writable register which controls host interface channel 1 and 2 interrupts
and the fast A20 gate function. HICR2 is an 8-bit readable/writable register which controls host
interface channel 3 and 4 interrupts. HICR and HICR2 are initialized to H'F8 by a reset and in
hardware standby mode.
Bits 7 to 3—Reserved: These bits cannot be modified and are always read as 1.
HICR Bits 2 and 1—Input Data Register Full Interrupt Enable 2 and 1 (IBFIE2, IBFIE1)
HICR2 Bits 2 and 1—Input Data Register Full Interrupt Enable 4 and 3 (IBFIE4, IBFIE3)
These bits enable or disable the IBF1 to IBF4 interrupts to the internal CPU.
Rev. 3.00 Jan 18, 2006 page 588 of 1044
REJ09B0280-0300
Bit
Initial value
Slave Read/Write
Host Read/Write
Bit
Initial value
Slave Read/Write
Host Read/Write
HICR
HICR2
—
—
—
—
—
—
7
1
7
1
—
—
—
—
—
—
6
1
6
1
—
—
—
—
—
—
5
1
5
1
—
—
—
—
—
—
4
1
4
1
—
—
—
—
—
—
3
1
3
1
IBFIE2
IBFIE4
R/W
R/W
—
—
2
0
2
0
IBFIE1
IBFIE3
R/W
R/W
—
—
1
0
1
0
FGA20E
R/W
—
—
—
—
0
0
0
0