Main Board Circuit Configuration (Card Section) - Epson Stylus Photo RX700 Service Manual

EPSON Stylus Photo RX700
IC Location
USB IF circuit (IC12)
Specification: Universal Serial Bus Specification Revision 2.0
(USB 2.0)
Receive mode: High/Full speed mode
Receiving system: Bulk transfer / control transfer
Data reception capacity:
About 48.0 MB/s max. (bulk transfer in high speed mode)
About 1.15 MB/s max. (bulk transfer in full speed mode)
Control circuit: 2.0 USB controller SOC (E01A56B*)
Transceiver IC: PHY incorporated in SOC is used
Crystal oscillator: 48.000 MHz
USB IF circuit (IC12)
Specification: Universal Serial Bus Specification Revision 1.1
(USB 1.1 Host)
Transmission mode: TPS2051A (by TI: IC 4) is mounted as the
overcurrent sensing circuit and power supply control circuit of the USB
port.
Data transmission capability: About 1.15 MB/s max. (bulk transfer in
full speed mode)
Control circuit: USB 1.1 Host controller in SOC (E01A56B*)
Crystal oscillator : 48.000 MHz
Power supply IC4
Name: TPS2051A(TI)
controller for
Package : 8-Pin PSOP
USB 1.1 Host
Function: Current limiting power control 1 CH
The control signal is active at high level.
Energy save
When the PSC terminal is connected to GND via the 20 V Zener diode,
circuit the Power Supply Unit enters the low-power mode.
DC-DC IC700
Name: FA 7728 F (Fuji Electric Device Technology)
converter circuit
Application: 3.3 V power generation circuit for logic
Input voltage range : 15 V~44 V
Capacity: 3.3 V 0.8 A (Max 1.2 A)
1.5 V 0.8 A (Max 1.2 A)
Oscillation
Model: Q22FA23800046
circuit
Element: Crystal oscillator
Frequency: 48.000 [MHz]
Remarks : 45-55% Duty
Operating Principles
Functions
±
500 ppm 45-55% duty
±
500 ppm 45-55% duty
1.5 V power generation circuit for logic
±
500 ppm or less
Operating Principles of Electric Circuitry

2.3.3.5 Main Board Circuit Configuration (Card Section)

IC Location
ASIC for card IC10
Name : E09A56B* (by NEC)
section control
Manufacturing process: 0.35Éþ cell base IC CB9-VX
Package: 144 pin QFP
Supply voltage: 3.3 V single power supply
Operating frequency: 64 MHz (bus clock) and 48 MHz (internal clock)
Controls the following functions of the card section:
• PCMCIA (CF) I/F
• SSFDC (SmartMedia) I/F, xD-Picture Card I/F
• SD I/F
• Memory Stick I/F
• General-purpose I/O ports
• UART 1 (for Bluetooth debug and authentication)
Compact Flash CN27
Conforming to PCMCIA Rev.2.1/JEIDA Ver.4.2 standard
I/F
Supporting PCMCIA-ATA cards
CF Socket Power Controller
Name : TP2041B(TI) IC17
Package : 8-Pin PSOP
Memory Stick CN26
Conforming to Memory Stick Standard Format Specification Version 1.3
I/F
Transmit and receive: 8 bytes (4 half words) for each, incorporating Data
Buffer
Transfer clock: 12 MHz
CRC circuit incorporated
Automatic command execution function
SmartMedia/xD
ECC numeration circuit conforming to SSFDC Physical Format
card I/F Specification Version 1.21 incorporated
SD card I/F
SD Memory Card
• Conforming to SD Memory Card "Physical Layer Specification" Rev. 1.0
• Supporting 4-bit SD bus mode interface
• SPI mode is not supported.
• Supporting SD Memory Card ACMD for authentication
MultimediaCard
• Conforming to MultiMediaCard "System Specification" Rev. 2.2
• Supporting 1 bit MultiMedia Card mode interface
• SPI mode is not supported.
LED circuit
LED (GREEN) : SML-A12MTT86(Rohm)
(Card section)
LED : 1
Drive current: 3 mA
Drive circuit: General-purpose port of E09A56B* on the Main Board
Current limiting resistance: 750 Ω
At Reset: All the LEDs go out
Function : Card access function
Revision A
Functions
46