HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 547

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

16.4.6
This module can be operated with the clocked synchronous serial format, by setting the FS bit in
SAR to 1. When the MST bit in ICCR1 is 1, the transfer clock output from SCL is selected. When
MST is 0, the external clock input is selected.
Data Transfer Format:
Figure 16.13 shows the clocked synchronous serial transfer format.
The transfer data is output from the rise to the fall of the SCL clock, and the data at the rising edge
of the SCL clock is guaranteed. The MLS bit in ICMR sets the order of data transfer, in either the
MSB first or LSB first. The output level of SDA can be changed during the transfer wait, by the
SDAO bit in ICCR2.
(Master output)
(Master output)
(Slave output)
(Slave output)
processing
ICDRS
ICDRR
RDRF
SCL
SDA
SDA
SCL
User
Clocked Synchronous Serial Format
Figure 16.13 Clocked Synchronous Serial Transfer Format
Figure 16.12 Slave Receive Mode Operation Timing (2)
SCL
SDA
A
9
Bit 7
1
Bit 0
Bit 6
Data 1
2
Bit 1 Bit 2 Bit 3 Bit 4
Bit 5
3
Bit 4
4
Bit 3
5
[3] Set ACKBT
Bit 2
6
Bit 5 Bit 6
Rev. 4.00 Sep. 14, 2005 Page 497 of 982
Bit 1
Section 16 I
7
[3] Read ICDRR [4] Read ICDRR
Bit 0
Bit 7
8
A
2
C Bus Interface 2 (IIC2)
REJ09B0023-0400
9
Data 1
Data 2