- 您現在的位置：買賣IC網 > PDF目錄360998 > ISP1122ABD (NXP SEMICONDUCTORS) Universal Serial Bus stand-alone hub PDF資料下載
參數資料
| 型號： | ISP1122ABD |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線控制器 |
| 英文描述： | Universal Serial Bus stand-alone hub |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP32 |
| 封裝： | 7 X 7 X 1.40 MM, PLASTIC, LQFP-32 |
| 文件頁數： | 21/48頁 |
| 文件大小： | 1150K |
| 代理商： | ISP1122ABD |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁當前第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
Philips Semiconductors
ISP1122A
USB stand-alone hub
Preliminary specification
Rev. 01 — 27 March 2000
21 of 48
9397 750 06986
Philips Electronics N.V. 2000. All rights reserved.
10.2 Hardware connections
Via the I
2
C-bus interface the ISP1122A can be connected to an external EEPROM
(PCF8582 or equivalent). The hardware connections are shown in
Figure 5
.
The SCL and SDA pins are multiplexed with pins OPTION and INDV respectively.
The slave address which ISP1122A uses to access the EEPROM is 1010000B. Page
mode addressing is not supported, so pins A0, A1 and A2 of the EEPROM must be
connected to GND (logic 0).
10.3 Data transfer
When the ISP1122A is reset, the I
2
C-bus interface tries to read 6 bytes of
configuration data from an external EEPROM. If no response is detected, the levels
on inputs SDA and SCL are interpreted as INDV and OPTION to select the operating
mode (see
Table 4
).
The data in the EEPROM memory are organized as shown in
Table 22
.
[1]
[2]
Vendor ID code in the Device descriptor, see
Table 10
.
Product ID code in the Device descriptor, see
Table 10
.
Fig 5.
EEPROM connection diagram.
idth
MBL166
INDV/SDA
OPTION/SCL
A1
A2
A0
SDA
SCL
VDD
RP
RP
VDD
ISP1122A
USB HUB
PCF8582
EEPROM
or
equivalent
I
2
C-bus
Table 22: EEPROM organization
Address
(Hex)
00
01
02
03
04
05
Default value
(Hex)
CC
04
22
11
-
AA
Contents
idVendor
[1]
(lower byte)
idVendor
[1]
(upper byte)
idProduct
[2]
(lower byte)
idProduct
[2]
(upper byte)
configuration bits C7 to C0; see
Table 23
signature
相關PDF資料 |
PDF描述 |
|---|---|
| ISP1122AD | Universal Serial Bus stand-alone hub |
| ISP1122ANB | Universal Serial Bus stand-alone hub |
| ISP1122 | Universal Serial Bus stand-alone hub |
| ISP1122BD | Universal Serial Bus stand-alone hub |
| ISP1122D | Universal Serial Bus stand-alone hub |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISP1122AD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
| ISP1122ANB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
| ISP1122BD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
| ISP1122D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
| ISP1122NB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub |
發(fā)布緊急采購，3分鐘左右您將得到回復。