Z51F3220FNX Datasheet, PDF (207/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
The next figure depicts above process for master transmitter operation of I2C.
Master
Receiver
SLA+R
S or Sr
SLA+W
ACK ^N
0x87 ^Y
0x86
0x22
STOP
P
0x0E
LOST
DATA
Rs
STOP
LOST LOST&
0x0F 0x1D 0x1F ^{Slave Receiver (0x1D)}
or Transmitter (0x1F)
ACK ^N
Y
0x46
0x0E
STOP
LOST
0x22
P
Other master continues
Y
Cont?
Lost? ^Y
0x47
N
STOP
0x22
P
0x0F
From master to slave /
Master command or Data Write
From slave to master
0xxx _{Value of Status Register}
ACK ^{Interrupt, SCL0 line is held low}
P Interrupt after stop command
LOST&
Arbitration lost as master and
addressed as slave
Figure 11.73 Formats and States in the Master Transmitter Mode (USI0)
PS029902-0212
PRELIMINARY
205