UBI EasyCoder 501 SA, Руководство по обслуживанию

Страница: 112 / 214

UBI EasyCoder 501 – Service Manual
112
Continued!
17. CPU BOARD, cont'd.
17.3
Circuits and Straps, cont'd.
IC-04 Program GAL 501
The GAL (Generic Array Logic) is a memory-mapped address
decoder that is common for all EasyCoder 501 models.
IC-07 Master Processor
The 32CG16 processor
1
treats incoming data from I/O ports and
translates UBI Fingerprint commands into machine statements,
which – in their turn – generate the bit pattern that makes up a printed
label. The print image of a label is divided into one or several fields,
and a typical task for the processor is to fetch the bit pattern of each
character from the selected character generator. After a possible
manipulation, like magnification or reversion, the characters are
placed in their respective fields, which are stored in memory in such
a way that they are correctly positioned and orientated. The master
processor also controls communication via optional interface boards
as well as the buzzer.
IC-20 Real-Time Clock Circuit (optional)
The optional real-time clock circuit (RTC) contains a clock/
calendar with battery backup. If an RTC is fitted on IC-20, the time
and date do not have to be set manually each time the printer is
started (see
TIME$
and
DATE$
in the UBI Fingerprint manuals).
IC-100 – IC-105 General Information
These sockets can use either EPROMs or Flash Memory packages.
EPROMs must be fitted in pairs (e.g. IC-100 stores the even byte
portion, and IC-101 stores the odd byte portion of a 16-bit word).
Each pair of EPROMs must have the same size.
• EPROMs should be CMOS type with a max. access time of 120
ns. IC-100 – IC-101 can use EPROMs with an individual size of
128 kbyte (1 Mbit) or 256 kbyte (2 Mbit), whereas IC-102 –
IC-105 also can use 512 kbyte (4 Mbit) EPROMs.
The size of the EPROMs is specified by jumpers on P-100, P-101,
and P-102:
- In case of 128 kbyte (1 Mbit) and 256 kbyte (2 Mbit) EPROMs,
no jumpers are required, but jumpers fitted in the left-hand
position is of no consequence.
- In case of 512 kbyte (4 Mbit) EPROMs in any of the sockets, all
three jumpers must be fitted in the left-hand position.
• Flash Memory packages with an individual size of 512 kbyte (4
Mbit) can be fitted in all six sockets, but requires special firmware
(presently not available). In this case, jumpers must be fitted in
the right-hand position of P-100, P-101, and P-102.
Present EPROM Types:
IC-100 & IC-101:
27C010 128 kbyte (1 Mbit)
27C020 256 kbyte (2 Mbit)
IC-102 – IC-105:
27C010 128 kbyte (1 Mbit)
27C020 256 kbyte (2 Mbit)
27C040 512 kbyte (4 Mbit)
1
/. 32CG16 stands for a 32 bit internally,
and a 16 bit externally, data processor
with 24 address lines, AD0–AD15
(multiplexed address/data) and A16–
A23 (addressing), which gives 16 Mbyte
linear address capability.