Section 17 I
2
C Bus Interface 3
Page 850 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
Figure 17.1 shows a block diagram.
SCL
ICCR1
ICCR2
ICMR
ICSR
ICIER
ICDRR
ICDRS
ICDRT
SAR
SDA
NF2CYC
Transfer clock
generation
circuit
Address
comparator
Interrupt
generator
Interrupt
request
Bus state
decision circuit
Arbitration
decision circuit
Noise canceler
Noise filter
Output
control
Output
control
Transmission/
reception
control circuit
I
2
C bus control register 1
I
2
C bus control register 2
I
2
C bus mode register
I
2
C bus status register
I
2
C bus interrupt enable register
I
2
C bus transmit data register
I
2
C bus receive data register
I
2
C bus shift register
Slave address register
NF2CYC register
[Legend]
ICCR1:
ICCR2:
ICMR:
ICSR:
ICIER:
ICDRT:
ICDRR:
ICDRS:
SAR:
NF2CYC:
Peripheral bus
Figure 17.1 Block Diagram