r5s72060w200fpv Renesas Electronics Corporation., r5s72060w200fpv Datasheet - Page 836

• Manufacturer Part Number: r5s72060w200fpv
• Description: 32-bit Risc Microcomputer Superhtm Risc Engine Family / Sh7200 Series
• Manufacturer: Renesas Electronics Corporation.

Section 16 I
16.4.5
In slave receive mode, the master device outputs the transmit clock and transmit data, and the
slave device returns an acknowledge signal. For slave receive mode operation timing, refer to
figures 16.11 and 16.12. The reception procedure and operations in slave receive mode are
described below.
1. Set the ICE bit in ICCR1 to 1. Set bits CKS[3:0] in ICCR1. (Initial setting) Set the MST and
2. When the slave address matches in the first frame following detection of the start condition,
3. Read ICDRR every time RDRF is set. If 8th receive clock pulse falls while RDRF is 1, SCL is
4. The last byte data is read by reading ICDRR.
Rev. 2.00 Dec. 09, 2005 Page 812 of 1152
REJ09B0191-0200
(Master output)
(Master output)
(Slave output)
(Slave output)
TRS bits in ICCR1 to select slave receive mode, and wait until the slave address matches.
the slave device outputs the level specified by ACKBT in ICIER to SDA, at the rise of the 9th
clock pulse. At the same time, RDRF in ICSR is set to read ICDRR (dummy read). (Since the
read data show the slave address and R/W, it is not used.)
fixed low until ICDRR is read. The change of the acknowledge before reading ICDRR, to be
returned to the master device, is reflected to the next transmit frame.
processing
ICDRS
ICDRR
RDRF
SCL
SDA
SDA
User
SCL
Slave Receive Operation
2
C Bus Interface 3 (IIC3)
Figure 16.11 Slave Receive Mode Operation Timing (1)
[2] Read ICDRR (dummy read)
A
9
Bit 7
1
Data 1
Bit 6
2
Bit 5
3
Bit 4
4
Bit 3
5
Bit 2
6
Bit 1
7
Bit 0
8
[2] Read ICDRR
A
9
Bit 7
Data 1
1
Data 2