Hitachi H8S/2378, H8S/2378R Series Hardware Manual page 752

Output
SCL
control
Noise canceler
Output
SDA
control
Noise canceler
Legend:
ICCRA
ICCRB
ICMR
ICSR
ICIER
ICDRT
ICDRR
ICDRS
SAR
Rev. 1.0, 09/01, page 708 of 904
Transmission/
control circuit
Bus state
decision circuit
Arbitration
decision circuit
2
: I C bus control register A
2
: I C bus control register B
2
: I C mode register
2
: I C status register
2
: I C interrupt permission register
2
: I C transmission data register
2
: I C reception data register
2
: I C bus shift register
: Slave address register
Figure 16.1 Block Diagram of I
reception
ICDRT
ICDRS
ICDRR
ICEIR
2
C Bus Interface2
Transfer clock
generation
circuit
ICCRA
ICCRB
ICMR
SAR
Address
comparator
ICSR
Interrupt
Interrupt request
generator