TallyGenicom 2440 ユーザーガイド
USB interface
Interfaces
B-6
USB interface
The USB (Universal Serial Bus) interface has the following features:
•
Full compliance with the Universal Serial Bus Specification Revision 2.0 for Full Speed
Mode.
Mode.
•
USB Function Controller with two FIFO-based Endpoints:
– One bidirectional Control Endpoint 0 (8 bytes)
– One receive Endpoint 1 (1*64 bytes)
– One bidirectional Control Endpoint 0 (8 bytes)
– One receive Endpoint 1 (1*64 bytes)
•
The signaling bit rate is 12 MB/s (Full speed).
Descriptor
Standard Device Descriptor
Offset
Field
Size
Value
Description
0
bLength
Byte
0x12
Size of this descriptor in bytes.
1
bDescriptorType
Byte
0x01
Device descriptor type.
2
bcdUSB
Word
0x0210
USB Spec. release No. in BCD.
4
bDeviceClass
Byte
0x00
Class code
5
bDeviceSubClass
Byte
0x00
Sub Class code
6
bDeviceProtocol
Byte
0x00
Protocol code
7
bMaxPacketSize0
Byte
0x08
Maximum packet size for EP0
8
idVendor
Word
0x0C22
Vendor ID for Customer
10
idProduct
Word
0x08A6
Product ID for Project
SDM500
SDM500
12
bcdDevice
Word
0x0100
ROM Version in BCD
14
iManufacture
Byte
0x01
Index of string descriptor
describing Manufacture.
describing Manufacture.
15
iProduct
Byte
0x02
Index of string descriptor
describing Product.
describing Product.
16
iSerialNumber
Byte
0x03,
Index of string descriptor
describing the device’s serial
number.
describing the device’s serial
number.
17
bNumConfiguration
Byte
0x01
Number of possible configu-
rations.
rations.