MC68306FC16 Datasheet, PDF (109/191 Pages) Motorola, Inc – Integrated EC000 Processor

SECTION 6
SERIAL MODULE
The MC68306 serial module is a dual universal asynchronous/synchronous receiver/
transmitter that interfaces directly to the CPU. The serial module, shown in Figure 6-1,
consists of the following major functional areas:
• Two Independent Serial Communication Channels (A and B)
• Baud Rate Generator Logic
• Sixteen Bit Timer/Counter
• Internal Channel Control Logic
• Interrupt Control Logic
SERIAL COMMUNICATIONS
CHANNELS A AND B
BAUD RATE
GENERATOR LOGIC
IP0
IP1
IP2
OP0
OP1
OP3
RxDA
TxDA
RxDB
TxDB
X1/CLK
X2
16-BIT TIMER/COUNTER
INTERNAL CHANNEL
CONTROL LOGIC
INTERRUPT CONTROL
..L. OGIC
Figure 6-1. Simplified Block Diagram
MOTOROLA
MC68306 USER'S MANUAL
6-1