2.3.3.1 LED Drive Section
,-
Each LED is controlled and driven by port expander driver
which includes a 12-bit shift
register and LED drivers.
Figure 2-39 shows the data transfer timing
the
and Figure 2-40 shows a block diagram of
the
The
converts 12-bit serial data
from the CPU into parallel data using a synchronous
clock
and trigger signal
then outputs the data to the output ports (01 to 012). Output ports
01 to 08 are used to drive the
and
to 012 are not used.
ON
Da
D7
D5
D4
D3
D2
OFF
“- -
n
State
Indicates a current value
a new
t
NOTE : An LED turns on when the data bit is 1.
Figure 2-39.
Data Transfer Timing
—
----
---– _–-_,.–– - 1
I
D2
D3
D4
D7
Da
RESET
12-BIT LATCHES WITH RESET
01 02 03 04
010
011
012
Figure 2-40.
Block Diagram
2-42
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 ...