Table 24: Configuration Descriptor Mass Storage Sample; Table 25: Interface Descriptor Mass Storage Sample - NEC V850ES/Jx3-H User Manual

V850ES/Jx3H – Plug it!
Field
bLength
bDescriptor
wTotalLength
bNumInterfaces
bConfigurationValue
iConfiguration
bmAttributes
bMaxPower
Field
bLength
bDescriptor
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubclass
bInterfaceProtocol
iInterface
Size
1 Descriptor size
1 Descriptor type
2 Total length of the configuration (configuration,
interface, endpoint, and other descriptors)
1 Number of interfaces supported in the
configuration
1 Input value (>= 1) for selecting this
configuration with SetConfiguration
1 Index to string descriptor to indicate
descriptor
1 Configuration attributes with the unit of bit
D7: "1"
D6: self-powered
D5: remote wake-up
D4-D0: reserved (0)
1 Maximum power consumption of bus with
the unit of 2mA

Table 24: Configuration Descriptor Mass Storage Sample

Size
1 Descriptor size
1 Descriptor type
1 Index Number (0 based) to indicate this
interface in the configuration
1 Input value to select alternate setting in
SetInterface
1 Interface endpoint number (excluding endpoint
0)
1 Class Code
0x00: no class
0xFF: vendor
0x01 – 0xFE: specific
1 Subclass code
1 Protocol code
0x00: no specific protocol
0xFF: vendor specific protocol
1 Index to string descriptor to indicate
interface

Table 25: Interface Descriptor Mass Storage Sample

User's Manual U19647EE2V0UM00
Description
Description
Value
0x09
0x02
0x0020
0x01
0x01
0x00
0x80
0x1B
Value
0x09
0x04
0x00
0x00
0x02
0x08
0x06
0x50
0x00
65