Epson 875DC - Stylus Photo Color Inkjet Printer, Руководство по обслуживанию

Страница: 22 / 66

EPSON Stylus PHOTO 875DC Revision A
OPERATING PRINCIPLES Overview 22
The major elements in the card reader part are as shown in the following
table.
Table 2-1. Major Elements in the Card Reader Part
Name IC Functions
CPU (V831) IC1
160-pin PGFP, operating at 33.0MHz (internally 99MHz).
• USB storage class target
• PCMCIA control
ASIC
(E05B75)
IC2
A 208-pin PGFP, operating at 33 MHz (48MHz for USB).
• USB storage class
• PCMCIA interface
• 16-bit DATA BUS V831 interface
• EEPROM interface
• Mac. serial interface
• 2 LED drive boards
• 1 universal input port
MIC2562A IC6
PCMCAI socket power controller
• 14-pin S.O. package
MBM29LV40
0TC/BC
IC8
4Mbit flash ROM
• 48-pin TSOP
• Powered by 3.3V single power source
• Can be cleared by chip bulk or sector unit.
• Program
MSM51V426
5E-60
IC4
4Mbit DRAM with the 2CAS-type page access function
• 44-pin TSOP
• Powered by the 3.3V single power source
• Various buffers
• Work area
AT93C46-
10S-2.7
IC10
1Kbit (x16) EEPROM
• 8-pin SOP
• Powered by 3.3V single power source
• Stores the device ID
• Stores the panel information
TUSB2043 IC5
4-port hub IC
• 32-pin TQFP
• 3.3V-operative self power mode
• Integrates a transceiver that complies with the
Universal serial bus specifications Rev.1.
Table 2-1. Major Elements in the Card Reader Part (continued)
Name IC Functions