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
HIGH LEVEL COMMAND INTERFACE
The I2C-bus interface is used to pass control commands and data between the SAA5264/SAA5265 and the television
microcontroller. The interface uses high-level commands, which are backward compatible with the SAFARI.
The I2C-bus transmission formats are:
Table 1 User command
START I2C-BUS ADDRESS
WRITE
ACK
COMMAND
ACK
STOP
Table 2 System command
START I2C-BUS ADDRESS WRITE ACK
COMMAND ACK PARAMETER
ACK
STOP
Table 3 User read
START I2C-BUS ADDRESS
READ
ACK
DATA
ACK
STOP
CHARACTER SETS
The following standard character sets are included in the SAA5264 and in the SAA5265:
Set 0 = Pan-European
Set 1 = Cyrillic
Set 2 = Greek/Turkish
Set 3 = French/Arabic
If you require any other character sets, please discuss them with your local Regional Sales Office first.
LIMITING VALUES
In accordance with Absolute Maximum Rating System (IEC 60134).
SYMBOL
PARAMETER
VDDX
VI
VO
IO
IIO(d)
Tamb
Tstg
all supply voltages
input voltage (any input)
output voltage (any output)
output current (each output)
diode DC input or output current
ambient temperature
storage temperature
CONDITIONS
note 1
note 1
MIN.
−0.5
−0.5
−0.5
−
−
−20
−55
MAX.
+4.0
VDD + 0.5 or +4.1
VDD + 0.5
10
20
+70
+125
UNIT
V
V
V
mA
mA
°C
°C
Note
1. This maximum value refers to 5 V tolerant I/Os and may be 6 V maximum but only when VDD is present.
2000 Jan 27
8
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