Nxp Semiconductors UM10237 用户手册
UM10237_2
© NXP B.V. 2008. All rights reserved.
User manual
Rev. 02 — 19 December 2008
578 of 792
NXP Semiconductors
UM10237
Chapter 22: LPC24XX I
2
C interfaces I
2
C0/1/2
Fig 117. I
2
C Bus serial interface block diagram
AP
B BU
S
STATUS REGISTER
CONTROL REGISTER & SCL DUTY
CYCLE REGISTERS
ADDRESS REGISTER
COMPARATOR
SHIFT REGISTER
8
8
ACK
I2ADR
I2DAT
8
16
BIT COUNTER/
ARBITRATION &
SYNC LOGIC
SERIAL CLOCK
GENERATOR
TIMING &
CONTROL
LOGIC
STATUS
DECODER
status
bus
I2CONSET
I2SCLL
I2SCLH
I2CONCLR
interrupt
PCLK
INPUT
FILTER
OUTPUT
STAGE
SCL
INPUT
FILTER
OUTPUT
STAGE
SDA
I2STAT