3DQDVRQLF
27
13.
MICROPROCESSOR AND TELETEXT PROCESSING
The microprocessor SDA5450
IC1101
used on
EURO4, not only performs the required control
processing but also teletext processing which is
incorporated
within
the
microprocessor,
the
processing of which will be looked at later. First the
control processing stage of the microprocessor will be
looked at.
The elements that the microprocessor requires to
perform the aforementioned functions are:
:
8 bit C500-CPU
:
18MHz internal clock
:
Parallel 8-bit data and 16....19 bit address
bus
:
Eight 16 bit data pointer registers
:
Two 16 bit timers
:
Watch-dog timer
:
Capture compare timer for IR remote control
decoding
:
Serial Interface
:
256 bytes on-chip RAM
:
10kbytes on-chip display RAM
:
1 kbyte on-chip ACQ-buffer-RAM
:
1 kbyte on-chip extended-RAM
:
6 channel 8 bit pulse Width Modulator
:
2 channel 14 bit Pulse Width Modulator
:
4 multiplexed ADC inputs with 8 bit
resolution
:
One 8 bit In/Out port with open drain and
operational I
2
C bus emulation
:
Two 8 bit multifunctional In/Out ports
:
One 4 bit port works as either digital or
analogue input
:
One 2 bit In/Out port with optional functions
:
One
3
bit
In/Out
port
with
optional
RAM/ROM
address
expansion
up
to
512Kbyte
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Summary of Contents for EURO 4 Chassis
Page 24: ...3DQDVRQLF 24 ...
Page 26: ...3DQDVRQLF 26 TV STANDARDS ...
Page 93: ...3DQDVRQLF 10 ...
Page 97: ...3DQDVRQLF 14 Chapter 2 EURO 4 Supplement P Board DAF Circuit ...
Page 101: ...3DQDVRQLF 18 ...
Page 121: ...3DQDVRQLF 38 Chapter 3 EURO 4H Supplement Y Board Schematic ...
Page 124: ...3DQDVRQLF 41 ...
