h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 524

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 16 I
Bit 5
MST
0
1
Bit 5
MST
0
1
Bit 4
TRS
0
1
Rev. 4.00 Jun 06, 2006 page 470 of 1004
REJ09B0301-0400
Bit 4
TRS
0
1
0
1
Description
Slave mode
[Clearing conditions]
1. When 0 is written by software
2. When bus arbitration is lost after transmission is started in I
Master mode
[Setting conditions]
1. When 1 is written by software (in cases other than clearing condition 2)
2. When 1 is written in MST after reading MST = 0 (in case of clearing condition 2)
Description
Receive mode
[Clearing conditions]
1. When 0 is written by software (in cases other than setting condition 3)
2. When 0 is written in TRS after reading TRS = 1 (in case of clearing condition 3)
3. When bus arbitration is lost after transmission is started in I
4. When the SW bit in DDCSWR changes from 1 to 0
Transmit mode
[Setting conditions]
1. When 1 is written by software (in cases other than clearing conditions 3 and 4)
2. When 1 is written in TRS after reading TRS = 0 (in case of clearing conditions 3
3. When a 1 is received as the R/W bit of the first frame in I
2
C Bus Interface [H8S/2138 Group Option]
mode
mode
and 4)
Operating Mode
Slave receive mode
Slave transmit mode
Master receive mode
Master transmit mode
2
C bus format slave mode
2
2
C bus format master
C bus format master
(Initial value)
(Initial value)
(Initial value)