REV.-A
2.3.1.3 Font/Identity Module Installation and Removal Reset
Figure 2-24 shows the reset circuit and Figure 2-27 shows the module installed/removed reset
The font and identity modules should not be installed or removed while the power is on. If this is done, the
ROUT signal must be set low to prevent a
board circuit malfunction.
After reset, the CPU starts execution and
a RD signal to the memory devices. The reset circuit in
the
counts 32 x RD pulses and then generates a
pulse. When a module is installed or
removed, the exclusive OR value of
and
changes from the reset default value, and the DISC
signal is set low by the rising edge of the
pulse of the synchronized
signal. Consequently,
the
voltage begins decreasing. When the
voltage drops to VN, the DISC signal goes high and
then begins increasing. When it rises to VP, the ROUT signal goes high and the CPU restart.
Also, Table 2-20 shows the relationship between the input at
and
of
(8B) and the state
of the mudule.
1
-
-
DISC
-
-
I
,
I
- -
ROUT
(
I
I
I
I
I
CAR1“CAR2
I
I
I
RD CLK
1 1 1 1 1 - &
1 2
A CARTRIDGE: IS
A CARTRIDGE IS REMOVED/
INSTALLED
Figure 2-27. Module Installed/Removed Reset Timing
2-31
Содержание LQ-1060
Страница 1: ...EPSON TERMINAL PRINTER L Q 8 6 0 1 0 6 0 TECHNICAL MANUAL ...
Страница 5: ...REVISION TABLE REVISION DATE ISSUED I CHANGE DOCUMENT I I 1st issue I v ...
Страница 68: ...cc o REV A N N n 1 cc b I al cc u co n4 2 1 Figure 2 14 Main Switching 2 21 ...
Страница 79: ...REV A Table 2 20 State of Module 1 1 I W stay E H H L H d O s H H 4 2 32 ...
Страница 203: ...Figure 5 6 MONPS MONPSE Board Voltage Waveforms 5 17 ...
Страница 204: ...REV A Fiaure 5 6 MONPS MONPSE Board Voltage Waveforms z L 5 18 ...
Страница 205: ...Figure 5 6 MONPS MONPSE Board Voltage Waveforms 5 19 ...
Страница 217: ... n 3 m I BUS CONTROL 1 LJ Pc II SYSTEM CONTROL I I L 1 I PERIPHERAL BUS IIF u lJ Figure A 2 PD78213 Block Diagram A 3 ...
Страница 248: ...REV A A 3 DRAWINGS 3 J32 J TI g 4 Figure A 27 MONPS Board Component Layout A 34 ...
Страница 249: ... J30 33r J32 d m b13 G a TI 7 IC20 r El m J24 C2 L cl mow B L U E u Figure A 28 MONPSE Board Component Layout A 35 ...
Страница 250: ... 2 1 1 1 1 I A b 2 Ozaz 1202 C O ZZH Z UOEE vu I 1 Figure A 29 MONPS Board Circuit Diagram ...
Страница 251: ...REV A 1 UXZO xl OX 9 xl Onz b 8M 118 en A N J 93 T 818 Figure A 30 MONPSE Board Circuit Diagram A 37 ...
Страница 252: ...L t g Figure A 31 JUNMM Board Component Layout A 38 ...