MC68306 Motorola, MC68306 Datasheet - Page 109

• Manufacturer Part Number: MC68306
• Description: Integrated EC000 Processor
• Manufacturer: Motorola

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:
MOTOROLA
• Two Independent Serial Communication Channels (A and B)
• Baud Rate Generator Logic
• Sixteen Bit Timer/Counter
• Internal Channel Control Logic
• Interrupt Control Logic
Figure 6-1. Simplified Block Diagram
SERIAL COMMUNICATIONS
16-BIT TIMER/COUNTER
INTERRUPT CONTROL
MC68306 USER'S MANUAL
CHANNELS A AND B
INTERNAL CHANNEL
GENERATOR LOGIC
CONTROL LOGIC
BAUD RATE
. . .
LOGIC
OP0
OP1
OP3
RxDA
RxDB
TxDB
X2
IP0
IP1
IP2
TxDA
X1/CLK
6-1