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25 cti control register, 26 sync control register – Texas Instruments TVP5147M1PFP User Manual

Page 48

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Functional Description

40

SLES140A—March 2007

TVP5147M1PFP

2.11.25 CTI Control Register

Subaddress

2Eh

Default

00h

7

6

5

4

3

2

1

0

CTI coring [3:0]

CTI gain [3:0]

CTI coring [3:0]: 4-bit CTI coring limit control value, unsigned linear control range from 0 to

±

60, step size = 4

1111 =

±

60

0001 =

±

4

0000 = 0 (default)

CTI gain [3:0]: 4-bit CTI gain control values, unsigned linear control range from 0 to 15/16, step size = 1/16

1111 = 15/16
0001 = 1/16
0000 = 0 disabled (default)

2.11.26 Sync Control Register

Subaddress

32h

Default

00h

7

6

5

4

3

2

1

0

Reserved

Polarity FID

Polarity VS

Polarity HS

VS/VBLK

HS/CS

Polarity FID: determines polarity of FID terminal

0 = First field high, second field low (default)
1 = First field low, second field high

Polarity VS: determines polarity of VS terminal

0 = Active low (default)
1 = Active high

Polarity HS: determines polarity of HS terminal

0 = Active low (default)
1 = Active high

VS or VBLK:

0 = VS terminal outputs vertical sync (default)
1 = VS terminal outputs vertical blank

HS or CS:

0 = HS terminal outputs horizontal sync (default)
1 = HS terminal outputs composite sync