Usb Interface; Specifications; Signal Line And Pin Arrangement; Parallel Interface (Option) - Citizen CL-S6621 Technical Manual

2-4-2. USB Interface

(1) Specifications

Standards
Transmission speed
Receive buffer
Connector

(2) Signal line and pin arrangement

Pin No. Signal code
1 VBUS
2 D+
3 D-
4 GND

2-4-3. Parallel Interface (Option)

(1) Specifications
Transmission system 8-bit parallel data
Receive buffer size
Transmission modes
Signal level
Complies with Universal Serial Bus Specification 2.0
Compatible with 480Mbps (high speed) transmission
16K bytes
15120-00410 (KST)
Signal
USB power USB power (+5V)
Signal line + + signal line
Signal line - - signal line
GND GND
16K bytes
Compatible mode
It is an asynchronous forward channel mode to send the byte width
data from the host to the printer. The interface line of the data is
operated in accordance with signal line definitions of Centronics.
NIBBLE mode
It is an asynchronous reverse channel mode to send the data from
the printer to the host. In Nibble mode, 4-bit data (half byte) is sent at
a time using the 4 status lines (FAULT, SELECT, PE, and BUSY). To
send one complete byte data, the printer sends 2 nibbles (8 bits in
total) to the host. Nibble mode is usually combined with Compatible
mode to create a complete bi-directional channel.
ECP mode
ECP mode permits bi-directional asynchronous data transmission,
and by means of interlock handshake, it does not require the timing
necessary with Compatible mode.
IEEE1284 compatible
2-61
Function
Interface
CL-S6621