HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 548
HD6417144
Manufacturer Part Number
HD6417144
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417144.pdf
(930 pages)
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14. I
User processing
Receive Operation with Wait:
Figure 14.13 and figure 14.14 are flowcharts that give examples of operations (WAIT = 1) in
master receive mode.
Rev.4.00 Mar. 27, 2008 Page 504 of 882
REJ09B0108-0400
Figure 14.12 An Example of the Stop Condition Issuance Timing in Master Receive Mode
(Master output)
(Master output)
(Slave output)
User processing
ICDRR
ICDRF
2
SCL
SDA
SDA
IRTR
IRIC
C Bus Interface (IIC) Option
Figure 14.11 An Example of the Timing of Operations in Master Receive Mode
(Master output)
(Master output)
(Slave output)
Master transmit mode
ICDRR
ICDRF
SCL
SDA
IRTR
SDA
IRIC
bit 1
Data 1
7
Data 2
[1] Clear TRS to 0
bit 0
[4] IRIC clear
A
8
9
A
[3]
9
[6] Set ACKB to 1
SCL is fixed low until ICDR is read
[1] IRIC clear
Master receive mode
SCL is fixed low until ICDR is read
[7] ICDR read (data 2)
(MLS = WAIT = 0, HNDS = 1)
(MLS = WAIT = 0, HNDS = 1)
bit 7
[2] ICDR read (dummy read)
bit 7
1
1
bit 6
2
bit 6
2
bit 5
bit 5
3
Data 2
Data 3
3
Data 1
Undefined
bit 4
4
bit 4
4
bit 3
5
bit 3
SCL is fixed low until stop condition is issued
5
bit 2
6
bit 2
6
bit 1
7
bit 1
7
[4] IRIC clear
bit 0
[9] IRIC clear
8
bit 0
8
SCL is fixed low until ICDR is read
[8]
A
9
[10] ICDR read (data 3)
A
[3]
9
[5] ICDR read
(data 1)
Stop condition generation
[11] Write 0 to BBSY and SCP
(stop condition instruction
bit 7
issuance)
1
Data 2
Data 1
Data 3
bit 6
2
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