h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 324

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Rev. 1.00, 05/04, page 290 of 544
Bit
5
4
3
Bit Name
MST
TRS
ACKE
Initial
Value
0
0
0
R/W
R/W
R/W
Description
[MST clearing conditions]
1. When 0 is written by software
2. When lost in bus contention in I
[MST setting conditions]
1. When 1 is written by software (for MST clearing
2. When 1 is written in MST after reading MST = 0 (for
[TRS clearing conditions]
1. When 0 is written by software (except for TRS
2. When 0 is written in TRS after reading TRS = 1 (for
3. When lost in bus contention in I
[TRS setting conditions]
1. When 1 is written by software (except for TRS
2. When 1 is written in TRS after reading TRS = 0 (for
3. When 1 is received as the R/W bit after the first
Acknowledge Bit Decision and Selection
0: The value of the acknowledge bit is ignored, and
1: If the received acknowledge bit is 1, continuous
Depending on the receiving device, the acknowledge bit
may be significant, in indicating completion of
processing of the received data, for instance, or may be
fixed at 1 and have no significance.
master mode
condition 1)
MST clearing condition 2)
setting condition 3)
TRS setting condition 3)
master mode
clearing condition 3)
TRS clearing condition 3)
frame address matching in I
mode
continuous transfer is performed. The value of the
received acknowledge bit is not indicated by the
ACKB bit in ICSR, which is always 0.
transfer is halted.
2
C bus format slave
2
2
C bus format
C bus format