Epson Stylus Color 740 Service Manual

EPSON Stylus COLOR 440, 640, and 740 Chapter 1 Product Description
23
1.3.3 Serial Interface (Stylus COLOR 740 only)
Standard
RS-423 compatible
Synchronization
S
y
nchronous
Bit rate
Approximatel
y
1800 Kbps
Handshaking
X-ON/X-OFF, DTR protocol
Word format
Data Bit= 8 bits
Parit
y
Bit= None
Start Bit= 1 bit
Stop Bit= 1 bit
Connector
8-pin mini-circular connector
Cable
Apple S
y
stem Peripheral-8 Cable
(
recommended
)
Table 1-17. Connector Pin Assignments for the Serial Interface
Table 1-18. X-On/X-Off and DTR Status
1.3.3.1 USB Interface (Stylus COLOR 740 only)
Standard
Universal Serial Bus Specifications Rev. 1.0
Universal Serial Bus Device Class Definition
for Printin
g
Device Version 1.0
Bit rate
12 Mbps
Data encoding
NRZI
Connector
USB Series B
Cable length
2 meters
(
recommended
)
Table 1-19. Connector Pin Assignments for the USB Interface
Figure 1-10. USB Pin Assignments
Pin No. Signal Name I/O Functional Description
1 SCLK Out Synchronous clock signal
2 CTS In Clear to send
3 TXD- Out Transmit data (-)
4 SG In Signal ground
5 RXD- In Receive data (-)
6 TXD+ Out Balanced transmit data (+)
7 DTR Out Data terminal ready
8 RXD+ In Balanced receive data (+)
State Buffer Space X-ON/X-OFF DTR
Busy Less than 3072 bytes Send X-OFF code OFF
Ready More than 5120 bytes Send X-ON code ON
Pin No. Signal Name I/O Functional Description
1VCC —
Cable power; maximum power
consumption is 100 mA
2 -Data Bi-D Data
3+DataBi-D
Data; pulled up to +3.3 V via a 1.5K ohm
resistor
4 Ground — Cable ground
Pin #1
Pin #2
Pin #3
Pin #4

Epson Stylus Color 740 Specifications

General

Brand	Epson
Model	Stylus Color 740
Category	Printer
Language	English