ISP1130 Просмотр технического описания (PDF) - Philips Electronics

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ISP1130

Universal Serial Bus compound hub with integrated keyboard controller

Philips Electronics 

Philips Semiconductors

ISP1130

USB compound hub with keyboard controller

Table 9: Configuration descriptor…continued

Values in square brackets are optional.

Offset Field name

(bytes)

Size Value

(bytes) (Hex)

5

bConfigurationValue 1

01

6

iConfiguration

1

00

7

bmAttributes

1

A0

[E0]

8

MaxPower [1]

[1] Value in units of 2 mA.

1

32

Comments

configuration value = 1

no configuration string

bus-powered with remote wake-up

(default)

hybrid-powered with remote wake-up;

configured via bit 7 in the USBCON

register (see Table 53)

100 mA

Table 10: 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

00

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 11: 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)

Table 12: Hub descriptor

Offset Field name

(bytes)

0

bDescLength

1

bDescriptorType

2

bNbrPorts

Size

(bytes)

1

1

1

Value

(Hex)

09

29

03 [2]

Comments

descriptor length = 9 bytes

type = HUB

number of downstream ports (1 or 2;

default = 2) + number of embedded

functions (1 to 3; default = 1)

9397 750 06895

Objective specification

Rev. 01 — 23 March 2000

© Philips Electronics N.V. 2000. All rights reserved.

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