h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 610

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 I
Bit 6—I
bus interface to the CPU.
Bit 5—Master/Slave Select (MST)
Bit 4—Transmit/Receive Select (TRS)
MST selects whether the I
TRS selects whether the I
In master mode with the I
hardware, causing a transition to slave receive mode. In slave receive mode with the addressing
format (FS = 0 or FSX = 0), hardware automatically selects transmit or receive mode according to
the R/W bit in the first frame after a start condition.
Modification of the TRS bit during transfer is deferred until transfer of the frame containing the
acknowledge bit is completed, and the changeover is made after completion of the transfer.
MST and TRS select the operating mode as follows.
Rev. 6.00 Feb 22, 2005 page 550 of 1484
REJ09B0103-0600
Bit 6
IEIC
0
1
Bit 5
MST
0
1
2
C Bus Interface Interrupt Enable (IEIC): Enables or disables interrupts from the I
Description
Interrupts disabled
Interrupts enabled
Bit 4
TRS
0
1
0
1
2
C Bus Interface [Option] (Only for the H8S/2638, H8S/2639, and H8S/2630)
Operating Mode
Slave receive mode
Slave transmit mode
Master receive mode
Master transmit mode
2
2
2
C bus interface operates in transmit mode or receive mode.
C bus format, when arbitration is lost, MST and TRS are both reset by
C bus interface operates in master mode or slave mode.
(Initial value)
(Initial value)
2
C