SM5837AF

SEIKO NPC CORPORATION —7

FUNCTIONAL DESCRIPTION

The SM5837AF provides a built-in 1H delay for video signal processing. The delay can be set to a length of 31

When PARA is HIGH, the delay length is set by parallel input data on DL0 to DL10. When PARA is LOW, the

delay length is set by serial input data using SDI, SICK and LEN. Accordingly, the function of DL0/SDI,

DL1/SICK and DL2/LEN is determined by PARA.

Parallel Input Set Method (PARA, DL0 to DL10)

by the input data on DL0 to DL10 as shown in equation 1 and table 1.

Table 1. Delay bit length setting

DL10

DL9

DL8

DL7

DL6

DL5

DL4

DL3

DL2

DL1

DL0

Delay length

00000000000

31

00000000001

32

00000000010

33

00000000011

34

00000000100

35

↓↓↓↓↓↓↓↓↓↓↓

↓

00111100001

512

00111100010

513

↓↓↓↓↓↓↓↓↓↓↓

↓

01111100001

1024

01111100010

1025

↓↓↓↓↓↓↓↓↓↓↓

↓

11111100001

2048

11111100010

2049

↓↓↓↓↓↓↓↓↓↓↓

↓

11111111110

2077

11111111111

2078

(1)

{DLk

× 2 }

Σ

10

k

k = 0