h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 651

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

The initial values of TWR0 to TWR15 after a reset and in standby mode are undetermined.
18B.2.8 Status Registers (STR1 to STR3)
Note:
Note:
Note:
The STR registers are 8-bit registers that indicate status information during host interface
processing. Bits 3, 1, and 0 of STR1 to STR3, and bits 7 to 4 of STR3, are read-only bits to both
the host processor and the slave processor. However, 0 only can be written from the slave
processor to bit 0 of STR1 to STR3, and bits 6 and 4 of STR3, in order to clear the flags to 0. The
registers selected from the host processor according to the I/O address are shown in the following
Bit
Initial value
Slave Read/Write
Host Read/Write
Bit
Initial value
Slave Read/Write
Host Read/Write
Bit
Initial value
Slave Read/Write
Host Read/Write
STR1
STR2
STR3
* Only 0 can be written, to clear the flag.
* Only 0 can be written, to clear the flag.
* Only 0 can be written, to clear the flag.
DBU17
DBU27
IBF3B
R/W
R/W
R
R
R
R
7
0
7
0
7
0
OBF3B
DBU16
DBU26
R/(W) *
R/W
R/W
R
R
R
6
0
6
0
6
0
DBU15
DBU25
MWMF
R/W
R/W
R
R
R
R
5
0
5
0
5
0
Section 18B Host Interface LPC Interface (LPC)
DBU14
DBU24
SWMF
R/(W) *
R/W
R/W
R
R
R
4
0
4
0
4
0
Rev. 3.00 Jan 18, 2006 page 623 of 1044
C/D1
C/D2
C/D3
R
R
R
R
R
R
3
0
3
0
3
0
DBU12
DBU22
DBU32
R/W
R/W
R/W
R
R
R
2
0
2
0
2
0
REJ09B0280-0300
IBF3A
IBF1
IBF2
R
R
R
R
R
R
1
0
1
0
1
0
R/(W) *
R/(W) *
R/(W) *
OBF1
OBF2
OBF3
R
R
R
0
0
0
0
0
0