MC68306 Motorola, MC68306 Datasheet - Page 161

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

7.4 INSTRUCTION REGISTER
The MC68306 IEEE 1149.1 implementation includes the three mandatory public
instructions (EXTEST, SAMPLE/PRELOAD, and BYPASS), the optional public ID
instruction, plus one additional public instruction (CLAMP) defined by IEEE 1149.1. The
MOTOROLA
FROM PIN
OUTPUT
SYSTEM
LOGIC
FROM
NOTE: More than one lO.Cell could be serially connected and controlled by a single En.Cell.
1 – EXTEST
0 – OTHERWISE
OUTPUT
ENABLE
OUTPUT
INPUT
DATA
DATA
Figure 7-8. General Arrangement for Bidirectional Pins
1
G1
1
MUX
Figure 7-7. Bidirectional Cell (IOx0.Cell)
FROM LAST CELL
TO NEXT CELL
EN.CELL
IO.CELL
*
MC68306 USER'S MANUAL
SHIFT DR
PREVIOUS
FROM
CELL
G1
1
1
MUX
CLOCK DR
EN
1D
C1
UPDATE DR
TO NEXT
CELL
1D
C1
PIN
I/O
TO OUTPUT
DRIVER
INPUT TO
SYSTEM
LOGIC
7-9