SAA5265 Просмотр технического описания (PDF) - Philips Electronics
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SAA5265 Datasheet PDF : 24 Pages
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Philips Semiconductors
10 and 1 page intelligent teletext decoders
Preliminary specification
SAA5264; SAA5265
SYMBOL
PIN TYPE
DESCRIPTION
G
33
O Green colour information pixel rate output
R
34
O Red colour information pixel rate output
VDS
35
O video/data switch push-pull output for pixel rate fast blanking
HSYNC
36
I horizontal sync pulse input: Schmitt triggered for a Transistor Transistor Level (TTL)
version; the polarity of this pulse is programmable by register bit
TXT1.H POLARITY
VSYNC
VSSP
VDDC
OSCGND
XTALIN
37
I vertical sync pulse input; Schmitt triggered for a TTL version; the polarity of this
pulse is programmable by register bit TXT1.V POLARITY
38
− periphery ground
39
− core supply voltage (+3.3 V)
40
− crystal oscillator ground
41
I 12 MHz crystal oscillator input
XTALOUT
42
O 12 MHz crystal oscillator output
RESET
VDDP
43
I reset input; if this pin is HIGH for at least 2 machine cycles (24 oscillator periods)
while the oscillator is running, the device resets; this pin should be connected to
VDDP via a capacitor
44
− periphery supply voltage (+3.3 V)
Port 1: 8-bit programmable bidirectional port
P1.0
45 I/O input/output for general use
P1.1
46 I/O input/output for general use
P1.2
47 I/O input/output for general use
P1.3
SCL
SDA
48 I/O input/output for general use
49
I I2C-bus Serial Clock input from application
50
I/O I2C-bus Serial Data input/output (application)
P1.4
51 I/O input/output for general use
P1.5
52 I/O input/output for general use
2000 Jan 27
6
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