Microchip Technology MA330031-2 Data Sheet
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70000657H-page 274
2011-2013 Microchip Technology Inc.
FIGURE 19-1:
I2Cx BLOCK DIAGRAM (
X
= 1 OR 2)
Internal
Data Bus
SCLx/ASCLx
SDAx/ASDAx
Shift
Match Detect
Start and Stop
Bit Detect
Clock
Address Match
Clock
Stretching
I2CxTRN
LSb
Shift Clock
BRG Down Counter
Reload
Control
F
P
/2
Start and Stop
Bit Generation
Acknowledge
Generation
Collision
Detect
I2CxCON
I2CxSTAT
Cont
rol L
ogi
c
Read
LSb
Write
Read
I2CxBRG
I2CxRSR
Write
Read
Write
Read
Write
Read
Write
Read
Write
Read
I2CxMSK
I2CxRCV
I2CxADD