Usb (Universal Serial Bus) Interface - Epson TM-T88 Series Technical Reference Manual

USB (Universal Serial Bus) Interface

Description
• Full-speed transmission at 12 Mbps [bps: bits per second]
• Plug & Play, Hot Insertion & Removable
USB transmission specifications
USB function
Overall specifications
Transmission speed
Transmission method
Power supply specifications
Current consumed by USB bus
USB packet size (full-
speedconnection)
USB device class
USB descriptor
Vendor ID
Product ID
String Descriptor
Status transmission from printer with USB interface
In order to avoid lack of status data, it is necessary to periodically retrieve status data at the host PC.
Unlike RS-232, the USB bulk transmission method cannot interrupt data transmission to the host.
The printer has a 128-byte status buffer. Statuses that exceed the buffer capacity are canceled.
USB bulk OUT (TM)
USB bulk IN (TM)
Manufacturer
Product
Serial number
Compliant to USB 2.0 specifications
USB Full-Speed (12 Mbps)
USB bulk transmission method
USB self power supply function
2 mA
64 bytes
64 bytes
Vendor-defined class
USB vendor-defined class
04B8h
0202h
EPSON
TM-L90
Character string based on the product serial number
Appendix
103