Epson Stylus PHoto 875DC Service Manual page 22

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