PIC14000-04 Microchip Technology, PIC14000-04 Datasheet - Page 42

• Manufacturer Part Number: PIC14000-04
• Description: 28-Pin Programmable Mixed Signal Controller
• Manufacturer: Microchip Technology

PIC14000
FIGURE 7-2:
DS40122B-page 42
bit7
U
_
U
_
D/A
R
I
2
CSTAT: I
R
P
R
S
2
R/W
C PORT STATUS REGISTER
R
UA
R
BF
R
bit0
BF: Buffer full
Receive
1 = Receive complete, I
0 = Receive not complete, I
Transmit
1 = Transmit in progress, I
0 = Transmit complete, I
UA: Update Address (10-bit I
1 = Indicate that the user needs to update the address in the I
0 = Address does not need to be updated
R/
This bit holds the R/W bit information received following the last address
match. This bit is only valid during the transmission.
The user may use this bit in software to determine whether transmission
or reception is in progress.
1 = Read
0 = Write
S: Start bit
This bit is cleared when the I
1 = Indicates that a start bit has been detected last. This bit is 0 on
0 = Start bit was not detected last
P: Stop bit
This bit is cleared when the I
1 = Indicates that a stop bit has been detected last.
0 = Stop bit was not detected last
D/
1 = Indicates that the last byte received was data
0 = Indicates that the last byte received was address
Unimplemented: read as ‘0’
Preliminary
W
A
register.
: Data/Address bit
reset.
: Read/write bit information
Register:
Address:
POR value:
I
2
2
2
CSTAT
CBUF is full
CBUF is empty
2
CBUF is full
2
CBUF is empty
2
2
2
94h
00h
C module is disabled (I
C module is disabled (I
C slave mode only)
W: Writable bit
R: Readable bit
U: Unimplemented, read as ‘0’
1996 Microchip Technology Inc.
2
2
CEN is cleared)
CEN is cleared)
2
CADD