r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 697

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

(2)
In transmit mode, transmit data is output from SDA, in synchronization with the fall of the transfer
clock. The transfer clock is output when MST in ICCR1 is 1, and is input when MST is 0. For
transmit mode operation timing, refer to figure 16.14. The transmission procedure and operations
in transmit mode are described below.
1. Set the ICE bit in ICCR1 to 1. Set the MST and CKS3 to CKS0 bits in ICCR1. (Initial setting)
2. Set the TRS bit in ICCR1 to select the transmit mode. Then, TDRE in ICSR is set.
3. Confirm that TDRE has been set. Then, write the transmit data to ICDRT. The data is
processing
(Output)
ICDRT
ICDRS
TDRE
SDA
TRS
User
SCL
transferred from ICDRT to ICDRS, and TDRE is set automatically. The continuous
transmission is performed by writing data to ICDRT every time TDRE is set. When changing
from transmit mode to receive mode, clear TRS while TDRE is 1.
Transmit Operation
[2] Set TRS
[3] Write data
to ICDRT
Data 1
Bit 0
Figure 16.14 Transmit Mode Operation Timing
1
[3] Write data
to ICDRT
Bit 1
2
Data 1
Bit 6
7
Data 2
Bit 7
8
Bit 0
Data 2
1
Rev. 1.00 Sep. 21, 2007 Page 671 of 1124
Section 16 I
Bit 6
7
[3] Write data
Bit 7
to ICDRT
2
8
C Bus Interface 2 (I
REJ09B0402-0100
Data 3
[3] Write data
Data 3
Bit 0
to ICDRT
1
2
C2)