SAA7182A Datasheet, PDF (23/45 Pages) NXP Semiconductors – Digital Video Encoder EURO-DENC2

Philips Semiconductors
Digital Video Encoder (EURO-DENC2)
Preliminary specification
SAA7182A; SAA7183A
Table 19 Subaddress 62A
DATA BYTE
RTCE
LOGIC LEVEL
DESCRIPTION
0
no real time control of generated subcarrier frequency
1
real time control of generated subcarrier frequency through SAA7151B or SAA7111
(timing see Fig.18)
Table 20 Subaddress 62B
DATA BYTE
BSTA
DESCRIPTION
CONDITIONS
amplitude of colour burst;
input representation in
accordance with
“CCIR 601”
white-to-black = 92.5 IRE;
burst = 40 IRE; NTSC encoding
BSTA = 0 to 1.25 × nominal⁽¹⁾
white-to-black = 92.5 IRE;
burst = 40 IRE; PAL encoding
BSTA = 0 to 1.76 × nominal⁽²⁾
white-to-black = 100 IRE;
burst = 43 IRE; NTSC encoding
BSTA = 0 to 1.20 × nominal⁽³⁾
white-to-black = 100 IRE;
burst = 43 IRE; PAL encoding
BSTA = 0 to 1.67 × nominal⁽⁴⁾
fixed burst amplitude with SECAM encoding
Notes
1. Recommended value: BSTA = 102 (66H).
2. Recommended value: BSTA = 72 (48H).
3. Recommended value: BSTA = 106 (6AH).
4. Recommended value: BSTA = 75 (4BH).
REMARKS
Table 21 Subaddress 63 to 66 (four bytes to program subcarrier frequency)
DATA BYTE
DESCRIPTION
CONDITIONS
FSC0 to FSC3
f_fsc = subcarrier frequency
(in multiples of line
frequency);
f_llc = clock frequency (in
multiples of line
frequency)
FSC
=

round

f-f-_f-l-sl--c-c
×
2³²ï£·ï£¶

see note 1
REMARKS
FSC3 = most significant byte
FSC0 = least significant byte
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).
c) SECAM: f_fsc = 274.304, f_llc = 1728 → FSC = 681786290 (28A33BB2H).
1996 Oct 02
23