HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 714

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 20
Rev. 3.00 Jan. 18, 2008 Page 652 of 1458
REJ09B0033-0300
Bit
5, 4
3
2
1
0
Bit Name

BCWP
BC2
BC1
BC0
I
2
C Bus Interface (IIC)
Initial
Value
All 1
1
0
0
0
R/W

R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 1.
BC Write Protect
This bit controls the BC2 to BC0 modifications. When
modifying BC2 to BC0, this bit should be cleared to 0 and
use the MOV instruction.
0: When writing, values of BC2 to BC0 are set.
1: When reading, 1 is always read.
Bit Counter 2 to 0
These bits specify the number of bits to be transferred
next. When read, the remaining number of transfer bits is
indicated. With the I
with one addition acknowledge bit. Bit BC2 to BC0
settings should be made during an interval between
transfer frames. If bits BC2 to BC0 are set to a value
other than 000, the setting should be made while the SCL
pin is low. The value returns to 000 at the end of a data
transfer, including the acknowledge bit.
I
000: 9 bits
001: 2 bits
010: 3 bits
011: 4 bits
100: 5 bits
101: 6 bits
110: 7 bits
111: 8 bits
2
C Bus Format
When writing, settings of BC2 to BC0 are invalid.
2
C bus format, the data is transferred