RX610 Group
22. I
2
C Bus Interface (RIIC)
R01UH0032EJ0120 Rev.1.20
Page 688 of 1006
Feb 20, 2013
ICCR1
Output
control
Noise
canceler
Bus state decision
circuit
Arbitration decision
circuit
Output
control
Noise
canceler
ICDRS
ICDRT
ICDRR
Address comparator
ICCR2
ICMR1
ICMR2
ICMR3
ICFER
ICSR1
ICSR2
ICSER
ICIER
ICBRH
ICBRL
Timeout circuit
Interrupt generator
Transmission/rece
ption control circuit
Transfer clock
generator
ACK output circuit
SCLn
SDAn
NACK decision/ACK
reception circuit
BC[2 0]
CKS[2 0]
CLO
SDAI
BBSY, MST, TRS
SDA output delay control
ST, RS, SP
IICRST
SDDL[2 0]
PCLK
ACKBR
WAIT, RDRFS
NF[1 0]
ACKBT
NFE
SARL0
SARL1
SARL2
SARU0
SARU1
SARU2
NACKF
(TXI, TEI, RXI, STI, SPI, NAKI, ALI, TMOI)
Interrupt request
NF[1 0]
NFE
FMPE
FMPE
MALE, NALE, SALE
TMOE
TMOS, TMOH, TMOL
SCLE
NACKE
SCLI
SCL0, SDA0
PS
DLCS
TMOF
PS
IIC
φ
(PCLK/1 to PCLK/128)
IIC
φ
, IIC
φ
/2
Internal data bus
Figure 22.1 Block Diagram of RIIC