Specifications

EPSON EPL-N1600 Chapter 2 Operating Principles
Rev. A 55
2.1.4 Main Control Circuit
The main control circuit of the EPL-N1600 is the C258MAIN Board and
it consists of two sections: the main control circuitry and the en
g
ine
control circuitry (MCU). The followin
g
tables describe the main
components of each section.
Figure 2-3. CIRCUIT BLOCK DIAGRAM - C258MAIN BOARD
Table 2-2. C258MAIN BOARD - Main Control Circuit
Table 2-3. C258MAIN BOARD - Engine Control Circuit (MCU)
Component Location Operation
CPU (VR4310)
µPD30200GD
IC1 A RISC CPU runnin
g
at 150MHz. Controls
the board’s main control section.
ASIC E05B41BA IC10 Controls the followin
g
:
• Memor
y
access (RAM/ROM)
• DMA (I/O, Video)
ASIC E05B40BA IC15 Controls the followin
g
:
• External interfaces
• Communication with the operation panel
• Interrupts
ASIC E05B28KA IC16 Controls the followin
g
:
• Video data
g
eneration
• RIT/PGI operation
• Video interface (communication with the
en
g
ine control section)
DRAM IC19-22 Two 16Mbit ((16) modules. Serve as the
s
y
stem’s standard memor
y
.
Mask ROM IC17/18 8Mbit mask ROM. Stores font dataand IPL.
Pro
g
ram ROM CN5 Either C215PROG (Flash ROM version) or
C215PROG-B (Mask-ROM version) ROM-
DIMM module is installed in ROM-DIMM
socket CN5.
EEPROM (NM93C86A) IC13 16Kbit EEPROM which saves printer
confi
g
urations and status.
Component Location Operation
CPU (PD78054) IC201 En
g
ine control CPU. Controls en
g
ine
components (implements printin
g
) in
accordance with video data from the main
control section.
ASIC (PD65622GF) IC202 Controls the video interface with the main
control section. Also controls EEPROM.
EEPROM
(AT93C45)
IC203 Capacit
y
is 16Kbit. Stores setup parameters
related to en
g
ine control.