MC68306FC16 Datasheet, PDF (161/191 Pages) Motorola, Inc – Integrated EC000 Processor

1 – EXTEST
0 – OTHERWISE
OUTPUT
FROM
SYSTEM
LOGIC
G1
1
MUX
1
SHIFT DR
TO NEXT
CELL
TO OUTPUT
DRIVER
FROM PIN
G1
1
MUX
1D
1
C1
1D
C1
FROM
PREVIOUS
CELL
CLOCK DR
UPDATE DR
Figure 7-7. Bidirectional Cell (IOx0.Cell)
INPUT TO
SYSTEM
LOGIC
TO NEXT CELL
OUTPUT
ENABLE
EN.CELL
*
EN
I/O
OUTPUT
PIN
DATA
IO.CELL
INPUT
DATA
FROM LAST CELL
NOTE: More than one lO.Cell could be serially connected and controlled by a single En.Cell.
Figure 7-8. General Arrangement for Bidirectional Pins
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
MC68306 USER'S MANUAL
7-9