SN28837

1/2-INCH PAL TIMER

SOCS031B – JULY 1991

16

POST OFFICE BOX 655303

V Counter

(see Note A)

n

n+1

n+2

m

m+1

m+2

m+3

16

17

n+3

CLK

1H = 64

µs

18

19

n+4

m

m+1

m+2

m+3

16

17

18

19

VCR

V Counter

(see Note A)

CLK

VCR

Reset Window

NOTE A: The V counter is preset to the value 16 when VCR changes from low to high.

Figure 13. Operation of VCR