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4

TRUTH TABLE 3 (Driver Block)

Ln

BLK

PC

Output State of Driver Block

X

H

H

H (All driver outputs: H)

X

H

L

L (All driver outputs: L)

X

L

H

Output latch data (Ln)

X

L

L

Output reversed latch data (Ln)

X: H or L, H: High level, L: Low level

TIMING CHART (Right shift)

Remark Values in parentheses in the above chart are when R/L = L.

CLK

A(B )

1

4

A(B )

2

3

A(B )

3

2

A(B )

4

1

S(S )

1

64

S(S )

2

63

S(S )

3

62

S(S )

4

61

S(S )

5

60

S(S )

6

59

S(S )

7

58

S(S )

8

57

BLK

LE

PC

O(O )

1

64

O(O )

2

63

O(O )

3

62

O(O )

4

61

O(O )

5

60

O(O )

6

59

O(O )

7

58

O(O )

8

57