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© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
User manual Rev. 02 — 23 May 2005 77 of 133
Philips Semiconductors
UM10109
P89LPC932A1 User manual
Fig 36. I
2
C serial interface block diagram.
INTERNAL BUS
002aaa899
ADDRESS REGISTER
COMPARATOR
SHIFT REGISTER
8
I2ADR
ACK
BIT COUNTER /
ARBITRATION
AND SYNC LOGIC
8
I2DAT
TIMING
AND
CONTROL
LOGIC
SERIAL CLOCK
GENERATOR
CCLK
interrupt
INPUT
FILTER
OUTPUT
STAGE
INPUT
FILTER
OUTPUT
STAGE
P1.3
P1.3/SDA
P1.2/SCL
P1.2
timer 1
overflow
CONTROL REGISTERS AND
SCL DUTY CYCLE REGISTERS
I2CON
I2SCLH
I2SCLL
8
STATUS
DECODER
status bus
STATUS REGISTER
8
I2STAT