ISP1122 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Lista de partido
ISP1122 Datasheet PDF : 48 Pages
| |||
Philips Semiconductors
ISP1122
USB stand-alone hub
Table 11: Configuration descriptor
Values in square brackets are optional.
Offset Field name
(bytes)
Size
(bytes)
0
bLength
1
1
bDescriptorType
1
2
wTotalLength
2
Value
(Hex)
09
02
19, 00
4
bNumInterfaces
1
01
5
bConfigurationValue 1
01
6
iConfiguration
1
00
7
bmAttributes
1
E0
A0
8
MaxPower [2]
1
32
[00]
[FA]
[1] Selected by input SP/BP.
[2] Value in units of 2 mA.
Comments
descriptor length = 9 bytes
type = CONFIGURATION
total length of configuration, interface
and endpoint descriptors (25 bytes)
one interface
configuration value = 1
no configuration string
self-powered with remote wake-up [1]
bus-powered with remote wake-up [1]
100 mA (default)
0 mA (using an external EEPROM)
500 mA (using an external EEPROM)
Table 12: Interface descriptor
Offset Field name
(bytes)
0
bLength
1
bDescriptorType
2
bInterfaceNumber
3
bAlternateSetting
4
bNumEndpoints
5
bInterfaceClass
6
bInterfaceSubClass
7
bInterfaceProtocol
8
bInterface
Size
(bytes)
1
1
1
1
1
1
1
1
1
Value
(Hex)
09
04
00
01
01
09
00
00
00
Comments
descriptor length = 9 bytes
type = INTERFACE
-
no alternate setting
status change (interrupt) endpoint
HUB_CLASSCODE
-
no class-specific protocol
no interface string
Table 13: Endpoint descriptor
Offset Field name
(bytes)
Size
(bytes)
0
bLength
1
1
bDescriptorType
1
2
bEndpointAddress 1
3
bmAttributes
1
4
wMaxPacketSize 2
6
bInterval
1
Value
(Hex)
07
05
81
03
01, 00
FF
Comments
descriptor length = 7 bytes
type = ENDPOINT
endpoint 1, direction: IN
interrupt endpoint
packet size = 1 byte
polling interval (255 ms)
9397 750 07002
Product specification
Rev. 03 — 29 March 2000
© Philips Electronics N.V. 2000. All rights reserved.
16 of 48
Share Link: 