Microchip Technology dsPIC30F - Page 540

dsPIC30F Family Reference Manual
DS70068C-page 21-26 © 2004 Microchip Technology Inc.
Figure 21-16: Master Message (7-bit Address: Transmission And Reception)
1
- Setting the SEN bit starts a Start event.
AKDT
ACKEN
SEN
SCL
SDA
SCL
SDA
I2CTRN
TBF
I2CRCV
RBF
MI2CIF
ACKSTAT
1 2 3 4 5 6 7 8
A1A0
9
A
PEN
RCEN
1 2 3 4 5 6 7 8
D7D6D5D4D3D2D1D0
1 2 3 4 5 6 7 8 9
W
RSEN
1 32
9 1 2 3 4 5 6 7 8
D3D2D1D0D7D6D5D4
9
N
A
4 5 6 97 8
2
- Writing the I2CTRN register starts a master transmission. The data is the
3
- Writing the I2CTRN register starts a master transmission. The data is the
4
- Setting the PEN bit starts a master Stop event.
5
- Setting the SEN bit starts a Start event.
6
- Writing the I2CTRN register starts a master transmission. The data is the
7
- Setting the RCEN bit starts a master reception.
8
- Setting the ACKEN bit starts an Acknowledge event. ACKDT = 0 to send NACK.
- Setting the PEN bit starts a master Stop event.
address byte with R/W
bit clear.
message byte.
A6A5A4A3A2
A
A1A0
R
A6A5A4A3A2
address byte with R/W bit set.
9
(Master) (Master)
(Slave) (Slave)
MI2CIF cleared by user software.