Philips SAA7102 Datasheet page 48

Philips Semiconductors
Digital video encoder
Table 61 Subaddress 62H
DATA BYTE
BSTA amplitude of colour burst;
input representation in
accordance with
"ITU-R BT.601"
Table 62 Subaddresses 63H to 66H (four bytes to program subcarrier frequency)
DATA BYTE
FSC0 to FSC3 f = subcarrier frequency
fsc
(in multiples of line
frequency); f
frequency (in multiples of
line frequency)
Note
1. Examples:
a) NTSC M: f = 227.5, f
fsc
b) PAL B/G: f = 283.7516, f
fsc
Table 63 Subaddresses 67H to 6AH
DATA BYTE
L21O0 first byte of captioning data, odd field
L21O1 second byte of captioning data, odd field
L21E0 first byte of extended data, even field
L21E1 second byte of extended data, even field
Table 64 Subaddresses 6CH and 6DH
DATA BYTE
HTRIG sets the horizontal trigger phase related to chip-internal horizontal input
values above 1715 (FISE = 1) or 1727 (FISE = 0) are not allowed; increasing HTRIG decreases
delays of all internally generated timing signals; the default value is 0
2004 Mar 01
DESCRIPTION
white-to-black = 92.5 IRE;
burst = 40 IRE; NTSC encoding
white-to-black = 92.5 IRE;
burst = 40 IRE; PAL encoding
white-to-black = 100 IRE;
burst = 43 IRE; NTSC encoding
white-to-black = 100 IRE;
burst = 43 IRE; PAL encoding
DESCRIPTION
FSC
= clock
llc
= 1716 → FSC = 569408543 (21F07C1FH).
llc
= 1728 → FSC = 705268427 (2A098ACBH).
llc
DESCRIPTION
CONDITIONS
BSTA = 0 to 2.02 × nominal
BSTA = 0 to 2.82 × nominal
BSTA = 0 to 1.90 × nominal
BSTA = 0 to 3.02 × nominal
CONDITIONS
f
 
32
fsc
×
round 2
= ------- -
 
f
llc
DESCRIPTION
48
SAA7102; SAA7103
REMARKS
recommended value:
BSTA = 63 (3FH)
recommended value:
BSTA = 45 (2DH)
recommended value:
BSTA = 67 (43H)
recommended value:
BSTA = 47 (2FH); default after
reset
REMARKS
FSC3 = most significant byte;
; note 1
FSC0 = least significant byte
REMARKS
LSBs of the respective bytes are encoded
immediately after run-in and framing code, the
MSBs of the respective bytes have to carry the
parity bit, in accordance with the definition of
line 21 encoding format.
Product specification