- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367860 > PDUSBD12PWDH (NXP SEMICONDUCTORS) nullUSB interface device with parallel bus PDF資料下載
參數(shù)資料
| 型號： | PDUSBD12PWDH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線控制器 |
| 英文描述： | nullUSB interface device with parallel bus |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PDSO28 |
| 文件頁數(shù)： | 5/35頁 |
| 文件大?。?/td> | 838K |
| 代理商： | PDUSBD12PWDH |
第1頁第2頁第3頁第4頁當前第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
Philips Semiconductors
PDIUSBD12
USB interface device with parallel bus
Product data
Rev. 08 — 20 December 2001
5 of 35
9397 750 09238
Koninklijke Philips Electronics N.V. 2001. All rights reserved.
6.
Functional description
6.1 Analog transceiver
The integrated transceiver interfaces directly to the USB cables through termination
resistors.
6.2 Voltage regulator
A 3.3 V regulator is integrated on-chip to supply the analog transceiver. This voltage
is also provided as an output to connect to the external 1.5 k
pull-up resistor.
Alternatively, the PDIUSBD12 provides SoftConnect technology with an integrated
1.5 k
pull-up resistor.
6.3 PLL
A 6 MHz to 48 MHz clock multiplier PLL (Phase-Locked Loop) is integrated on-chip.
This allows for the use of a low-cost 6 MHz crystal. EMI is also minimized due to the
lower frequency crystal. No external components are needed for the operation of the
PLL.
6.4 Bit clock recovery
The bit clock recovery circuit recovers the clock from the incoming USB data stream
using 4
×
oversampling principle. It is able to track jitter and frequency drift specified
by the USB specification.
6.5 Philips Serial Interface Engine (PSIE)
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/serial conversion, bit stuffing/de-stuffing,
CRC checking/generation, PID verification/generation, address recognition, and
handshake evaluation/generation.
6.6 SoftConnect
The connection to the USB is accomplished by bringing D+ (for high-speed USB
device) HIGH through a 1.5 k
pull-up resistor. In the PDIUSBD12, the 1.5 k
pull-up
resistor is integrated on-chip and is not connected to V
CC
by default. The connection
is established through a command sent by the external/system microcontroller. This
allows the system microcontroller to complete its initialization sequence before
deciding to establish connection to the USB. Re-initialization of the USB bus
connection can also be performed without requiring to pull out the cable.
The PDIUSBD12 will check for USB V
BUS
availability before the connection can be
established. V
BUS
sensing is provided through pin EOT_N. See
Section 3.2 “Pin
description”
for details. Sharing of V
BUS
sensing and EOT_N can be easily
accomplished by using V
BUS
voltage as the pull-up voltage for the normally
open-drain output of the DMA controller pin.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PDIUSBD12D | nullUSB interface device with parallel bus |
| PDIUSBD12PW | nullUSB interface device with parallel bus |
| PDIUSBH11A | Universal Serial Bus hub(通用串行總線集線器) |
| PDIUSBH11ANB | Universal Serial Bus Hub |
| PDIUSBH11AD | Universal Serial Bus Hub |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PDUSBP11APWDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus Transceiver |
| PDUSIDEBRKT | 制造商:Tripp Lite 功能描述:RACK ENCLOSURE VERTICAL INSTALLATION KIT PDU, SURGE, POWER S - Bulk 制造商:Tripp Lite 功能描述:KIT PDU, SURGE, POWER STRIP 制造商:Tripp Lite 功能描述:Tripp Lite Rack Enclosure Vertical Installation Kit PDU, Surge, Power Strip |
| PDU-V101 | 功能描述:PHOTODIODE UV 0.31MM SQ TO-46 RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 光學 - 光電檢測器 - 光電二極管 系列:- 標準包裝:1 系列:- 波長:850nm 顏色 - 增強型:- 光譜范圍:400nm ~ 1100nm 二極管類型:引腳 nm 下響應率:0.62 A/W @ 850nm 響應時間:5ns 電壓 - (Vr)（最大）:50V 電流 - 暗（標準）:1nA 有效面積:1mm² 視角:150° 工作溫度:-40°C ~ 100°C 封裝/外殼:徑向，5mm 直徑（T 1 3/4） 其它名稱:475-2649-6 |
| PDU-V101Q | 功能描述:PHOTODIODE UV W/QW.31MM SQ TO-46 RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 光學 - 光電檢測器 - 光電二極管 系列:- 標準包裝:1 系列:- 波長:850nm 顏色 - 增強型:- 光譜范圍:400nm ~ 1100nm 二極管類型:引腳 nm 下響應率:0.62 A/W @ 850nm 響應時間:5ns 電壓 - (Vr)（最大）:50V 電流 - 暗（標準）:1nA 有效面積:1mm² 視角:150° 工作溫度:-40°C ~ 100°C 封裝/外殼:徑向，5mm 直徑（T 1 3/4） 其它名稱:475-2649-6 |
| PDU-V102 | 功能描述:PHOTODIODE UV 0.87MM SQ TO-46 RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 光學 - 光電檢測器 - 光電二極管 系列:- 標準包裝:1 系列:- 波長:850nm 顏色 - 增強型:- 光譜范圍:400nm ~ 1100nm 二極管類型:引腳 nm 下響應率:0.62 A/W @ 850nm 響應時間:5ns 電壓 - (Vr)（最大）:50V 電流 - 暗（標準）:1nA 有效面積:1mm² 視角:150° 工作溫度:-40°C ~ 100°C 封裝/外殼:徑向，5mm 直徑（T 1 3/4） 其它名稱:475-2649-6 |
發(fā)布緊急采購，3分鐘左右您將得到回復。