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參數(shù)資料
| 型號： | ISP1181B |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Full-speed Universal Serial Bus peripheral controller |
| 中文描述： | 全速通用串行總線外設(shè)控制器 |
| 文件頁數(shù)： | 9/70頁 |
| 文件大小： | 341K |
| 代理商： | ISP1181B |
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Philips Semiconductors
ISP1181B
Full-speed USB peripheral controller
Product data
Rev. 02 — 07 December 2004
9 of 70
9397 750 13958
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
7.
Functional description
The ISP1181B is a full-speed USB peripheral controller with up to 14 configurable
endpoints. It has a fast general-purpose parallel interface for communication with
many types of microcontrollers or microprocessors. It supports different bus
configurations (see
Table 3
) and local DMA transfers of up to 16 bytes per cycle. The
block diagram is given in
Figure 1
.
The ISP1181B has 2462 bytes of internal FIFO memory, which is shared among the
enabled USB endpoints. The type and FIFO size of each endpoint can be individually
configured, depending on the required packet size. Isochronous and bulk endpoints
are double-buffered for increased data throughput.
The ISP1181B requires a single supply voltage of 3.3 Vor 5.0 V and has an internal
3.3 V voltage regulator for powering the analog USB transceiver. It supports
bus-powered operation.
The ISP1181B operates on a 6 MHz oscillator frequency. A programmable clock
output is available up to 48 MHz. During ‘suspend’ state the 100 kHz
±
50 %
LazyClock frequency can be output.
7.1 Analog transceiver
The transceiver is compliant with the Universal Serial Bus Specification Rev. 2.0 (full
speed) It interfaces directly with the USB cable through external termination
resistors.
7.2 Philips Serial Interface Engine (SIE)
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 (de-)stuffing, CRC
checking/generation, Packet IDentifier (PID) verification/generation, address
recognition, handshake evaluation/generation.
7.3 Memory Management Unit (MMU) and integrated RAM
The MMU and the integrated RAM provide the conversion between the USB speed
(12 Mbit/s bursts) and the parallel interface to the microcontroller (max. 12 Mbyte/s).
This allows the microcontroller to read and write USB packets at its own speed.
7.4 SoftConnect
The connection to the USB is accomplished by bringing D
+
(for full-speed USB
peripherals) HIGH through a 1.5 k
pull-up resistor. In the ISP1181B, the 1.5 k
pull-up resistor is integrated on-chip and is not connected to V
CC
by default. The
connection is established by a command sent from the external/system
microcontroller. This allows the system microcontroller to complete its initialization
sequence before deciding to establish connection with the USB. Reinitialization of the
USB connection can also be performed without disconnecting the cable.
The ISP1181B will check for USB V
BUS
availability before the connection can be
established. V
BUS
sensing is provided through pin V
BUS
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISP1181BBS | Full-speed Universal Serial Bus peripheral controller |
| ISP1181BDGG | Full-speed Universal Serial Bus peripheral controller |
| ISP1181 | Full-speed Universal Serial Bus Interface Device(全速通用串行總線接口器件) |
| ISP1181DGG | INDUCTOR 4.7NH +-.3NH 0402 SMD |
| ISP1183 | Low-power Universal Serial Bus interface device with DMA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISP1181BBS | 制造商:NXP Semiconductors 功能描述:IC CONTROLLER USB PERIPHERAL SMD 制造商:ST-Ericsson 功能描述:CONTROLLER USB PERIPHERAL 48HVQFN |
| ISP1181BBS,518 | 功能描述:USB 接口集成電路 USB 1.1 DEVICE RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)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(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1181BBS,551 | 功能描述:USB 接口集成電路 USB 1.1 DEVICE CONTROLLER RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)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(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1181BBS,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(chǎn)品:USB 2.0 數(shù)據(jù)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(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1181BBS518 | 制造商:ST-Ericsson 功能描述:CONTROLLER USB PERIPHERAL 48HVQFN |
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