
2004 Jun 29
122
Philips Semiconductors
Product specification
HD-CODEC
SAA7108AE; SAA7109AE
Table 82
Subaddress 62H
Table 83
Subaddresses 63H to 66H (four bytes to program subcarrier frequency)
Note
1.
Examples:
a) NTSC M: f
fsc
= 227.5, f
llc
= 1716
→
FSC = 569408543 (21F07C1FH).
b) PAL B/G: f
fsc
= 283.7516, f
llc
= 1728
→
FSC = 705268427 (2A098ACBH).
Table 84
Subaddresses 67H to 6AH
PAL
0
1
0
1
NTSC encoding (non-alternating V component)
PAL encoding (alternating V component)
864 total pixel clocks per line
858 total pixel clocks per line
FISE
DATA BYTE
LOGIC
LEVEL
DESCRIPTION
CONDITIONS
REMARKS
RTCE
0
1
no real-time control of generated subcarrier frequency; default after reset
real-time control of generated subcarrier frequency through a Philips video decoder; for a
specification of the RTC protocol see document “RTC Functional Description” available
on request
amplitude of colour burst; input
representation in accordance
with “ITU-R BT601”
BSTA = 0 to 2.02
×
nominal
white-to-black = 92.5 IRE;
burst = 40 IRE; PAL encoding
BSTA = 0 to 2.82
×
nominal
white-to-black = 100 IRE;
burst = 43 IRE; NTSC encoding
BSTA = 0 to 1.90
×
nominal
white-to-black = 100 IRE;
burst = 43 IRE; PAL encoding
BSTA = 0 to 3.02
×
nominal
BSTA
white-to-black = 92.5 IRE;
burst = 40 IRE; NTSC encoding
recommended value:
BSTA = 63 (3FH)
recommended value:
BSTA = 45 (2DH)
recommended value:
BSTA = 67 (43H)
recommended value:
BSTA = 47 (2FH);
default after reset
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
FSC0 to
FSC3
f
fsc
= subcarrier frequency (in multiples of
line frequency); f
llc
= clock frequency (in
multiples of line frequency)
;
note 1
FSC3 = most significant byte;
FSC0 = least significant byte
DATA BYTE
DESCRIPTION
REMARKS
L21O0
L21O1
L21E0
L21E1
first byte of captioning data, odd field
second byte of captioning data, odd field
first byte of extended data, even field
second byte of extended data, even field
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.
DATA BYTE
LOGIC
LEVEL
DESCRIPTION
FSC
round
f
f
llc
-------
2
32
×
=