saa5261 NXP Semiconductors, saa5261 Datasheet - Page 5

• Manufacturer Part Number: saa5261
• Description: Saa5261; Saa5262; Saa5263 10-page Intelligent Teletext Decoders
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PINNING
1998 Apr 22
V0
V1
V2
V3
V4
V5
V6
V7
res
res
res
res
V
SCLK1
SDAT1
SA
FP
HSMODE
VSMODE
PDI
PL
V
CVBS1
CVBS2
BLACK
I
FRAME
V
COR
PON
RGBREF
B
ref
SYMBOL
SSD1
SSA
SSD2
10-page intelligent teletext decoders
PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
reserved
serial data input/output 1 (NVRAM)
versatile open-drain input/output bit 0 (should be tied HIGH)
versatile open-drain input/output bit 1 (should be tied HIGH)
versatile open-drain input/output bit 2 (should be tied HIGH)
versatile open-drain input/output bit 3 (should be tied HIGH)
versatile open-drain input/output bit 4 (should be tied HIGH)
versatile open-drain input/output bit 5 (should be tied HIGH)
versatile open-drain input/output bit 6 (should be tied HIGH)
versatile open-drain input/output bit 7 (should be tied HIGH)
reserved
reserved
reserved
digital ground 1
serial clock input 1 (NVRAM)
slave address input: LOW selects 58H; HIGH selects 60H
field polarity input: LOW selects first half line; HIGH selects second half line at the start of an
even field
horizontal sync mode control input: LOW selects HSYNC on rising edge
vertical sync mode control input. LOW selects VSYNC on rising edge
power-down imminent input: this input should be pulled LOW to indicate that the system is
about to lose power
phase-lock output: HIGH indicates that the system is phase-locked to the CVBS input
analog ground
CVBS input: this signal is applied via a 100 nF capacitor (nominal input 1 V (p-p)
this pin should be connected to ground if unused
black level input: a 100 nF capacitor should be connected to V
reference current input for analog circuits: for correct operation a 27 k resistor should be
connected to V
Frame output for use in non-interlaced displays: during teletext off, teletext mixed with TV
picture and subtitles this pin is inactive. In full teletext mode this pin provides a 25 Hz square
wave. FRAME = 1 = odd, FRAME = 0 = even.
digital ground 2
contrast reduction: active LOW output which allows selective contrast reduction of the
television picture to enhance a mixed mode display
picture on output: HIGH indicates that a TV picture is present and that the SAA526xPS is in
TV mode, mix mode, subtitle mode or news flash mode
RGB reference input: drive level reference for RGB outputs
blue dot rate character output of the blue colour information: the high voltage level is defined
by the RGBREF pin (can source 4 mA)
SSA
5
DESCRIPTION
SAA5261; SAA5262; SAA5263
SSA
Product specification