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參數資料
| 型號： | ISP1521BE |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線控制器 |
| 英文描述： | Hi-Speed Universal Serial Bus hub controller |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP80 |
| 封裝： | 12 X 12 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-315-1, LQFP-80 |
| 文件頁數： | 10/53頁 |
| 文件大小： | 270K |
| 代理商： | ISP1521BE |
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Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
Product data
Rev. 03 — 24 November 2004
10 of 53
9397 750 13702
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8.
Functional description
8.1 Analog transceivers
The integrated transceivers directly interface to USB lines. They can transmit and
receive serial data at high-speed (480 Mbit/s), full-speed (12 Mbit/s) and low-speed
(1.5 Mbit/s).
8.2 Hub controller core
The main components of the hub core are:
Philips Serial Interface Engine (SIE)
Routing logic
Transaction Translator (TT)
Mini-host controller
Hub repeater
Hub controller
Port controller
Bit clock recovery.
8.2.1
Philips serial interface engine
The Philips SIE implements the full USB protocol layer. It is completely hardwired for
speed and needs no firmware intervention. The functions of this block include:
synchronization, pattern recognition, parallel or serial conversion, bit (de-)stuffing,
CRC checking and generation, Packet IDentifier verification and generation, address
recognition, and handshake evaluation and generation.
8.2.2
Routing logic
The routing logic directs signaling to the appropriate modules (mini-host controller,
Original USB repeater and Hi-Speed USB repeater) according to the topology in
which the hub is placed.
8.2.3
Transaction translator
The TT acts as a go-between mechanism that links devices operating in the Original
USB mode and the Hi-Speed USB upstream mode. For the ‘IN’ direction, data is
concatenated in TT buffers till the proper length is reached, before the host takes the
transaction. In the reverse direction (OUT), the mini-host dispenses the data
contained in TT buffers over a period that fits into the Original USB bandwidth. This
continues until all outgoing data is emptied. TT buffers are used only on split
transactions.
8.2.4
Mini-host controller
The internal mini-host generates all the Original USB IN, OUT or SETUP tokens for
the downstream facing ports, while the upstream facing port is in the high-speed
mode. The responses from the Original USB devices are collected in TT buffers, until
the end of the complete split transaction clears the TT buffers.
相關PDF資料 |
PDF描述 |
|---|---|
| ISP1561 | ISP1561BM |
| ISP1561BM | ISP1561BM |
| ISP1562 | Hi-Speed Universal Serial Bus PCI Host Controller |
| ISP1562BE | Hi-Speed Universal Serial Bus PCI Host Controller |
| ISP1581 | Universal Serial Bus 2.0 high-speed interface device |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISP1521BE,518 | 功能描述:USB 接口集成電路 USB2 7-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 |
| ISP1521BE,551 | 功能描述:USB 接口集成電路 USB2 7 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 |
| ISP1521BE,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 |
| ISP1521BE518 | 制造商:ST-Ericsson 功能描述:IC CONTROLLER USB HUB 80LQFP |
| ISP1521BE-S | 功能描述:IC USB HUB CONTROLLER HS 80-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標準包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應商設備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
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