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參數資料
型號: ISP1520
廠商: NXP Semiconductors N.V.
英文描述: Hi-Speed Universal Serial Bus hub controller
中文描述: 高速通用串行總線控制器樞紐
文件頁數: 16/51頁
文件大小: 259K
代理商: ISP1520
Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
Product data
Rev. 02 — 04 May 2004
16 of 51
9397 750 11689
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
I
2
C-bus address:
The address of the ISP1520 is given in
Table 10
.
9.2.2
Architecture of configurable hub descriptors
The configurable hub descriptors can be masked in the internal ROM memory; see
Figure 7
. These descriptors can also be supplied from an external EEPROM or a
microcontroller. The ISP1520 implements both the master and slave I
2
C-bus
controllers. The information from the external EEPROM or the microcontroller is
transferred into the internal RAM during the power-on reset. A signature word is used
to identify correct descriptors. If the signature matches, the content of the RAM is
chosen instead of the ROM.
When the external microcontroller mode is selected and while the external
microcontroller is writing to the internal RAM, any request to configurable descriptors
will be responded to with a Not AcKnowledge (NAK). There is no specified time-out
period for the NAK signal. This data is then passed to the host during the
enumeration process.
The three configuration methods are selected by connecting pins SCL and SDA in the
manner given in
Table 11
.
Table 10:
I
2
C-bus slave address
MSB
A7
0
Slave address
A4
1
LSB
A1
0
Bit
Value
A6
0
A5
1
A3
0
A2
1
R/W
0/1
The I
2
C-bus cannot be shared between the EEPROM and the external microcontroller.
Fig 7.
Configurable hub descriptors.
MLD711
MICROCONTROLLER
SERIAL EEPROM
MASTER/SLAVE
I
2
C-BUS INTERFACE
signature
match
RAM
(256 bytes)
DESCRIPTOR
GENERATOR
INTERFACE
ROM
(256 bytes)
MUX
HUB CORE
I
2
C-bus
相關PDF資料
PDF描述
ISP1520BD Hi-Speed Universal Serial Bus hub controller
ISP1521 Hi-Speed Universal Serial Bus hub controller
ISP1521BE Hi-Speed Universal Serial Bus hub controller
ISP1561 ISP1561BM
ISP1561BM ISP1561BM
相關代理商/技術參數
參數描述
ISP1520BD 功能描述:IC USB HUB CONTROLLER HS 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標準包裝:3,000 系列:- 應用:PDA,便攜式音頻/視頻,智能電話 接口:I²C,2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應商設備封裝:24-QFN 裸露焊盤(4x4) 包裝:帶卷 (TR) 安裝類型:表面貼裝 產品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2
ISP1520BD,518 功能描述:USB 接口集成電路 USB2 4 PORT HUB RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1520BD,551 功能描述:USB 接口集成電路 USB2 4-PORT HUB CTRLR RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1520BD,557 功能描述:USB 接口集成電路 DO NOT USE ORDER -S OR -T PART RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
ISP1520BD518 制造商:ST-Ericsson 功能描述:IC CONTROLLER USB HUB 64-LQFP
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