MC68HC705T16 MOTOROLA [Motorola, Inc], MC68HC705T16 Datasheet - Page 56

• Manufacturer Part Number: MC68HC705T16
• Description: High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
• Manufacturer: MOTOROLA [Motorola, Inc]

6
6.2
Normally, a standard communication is composed of four parts,
They are described briefly in the following sections and illustrated in Figure 6-2.
MOTOROLA
6-2
Interrupt
SDA
SCL
Control register
1) START signal,
2) slave address transmission,
3) data transfer, and
4) STOP signal.
MEN MIEN MSTR XMT
M-Bus Protocol
control
control
SDA
SCL
START, STOP
detector and
arbitration
ACKEB
Figure 6-1 M-Bus Interface Block Diagram
M-Bus clock
sync logic
generator
interrupt
Status register
M-Bus
MCF
M-BUS SERIAL INTERFACE
START, STOP
generator and
SELTED
timing sync
BBSY LOST
Internal bus
SRW
MIF
RXACKB
Frequency
register
TX shift
register
control
divider
TX
MC68HC05T16
comparator
Address
register
Address
register
RX shift
control
RX
8
TPG