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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)： | 10/70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
10 of 70
9397 750 13958
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
V
BUS
sensing prevents the peripheral from wake-up when V
BUS
is not present.
Without V
BUS
sensing, any activity or noise on (D+, D-) might wake up the peripheral.
With V
BUS
sensing, (D+, D-) is decoupled when no V
BUS
is present. Therefore, even if
there is noise on the (D+, D-) lines, it is not taken into account. This ensures that the
peripheral remains in the suspend state.
Remark:
Note that the tolerance of the internal resistors is 25 %. This is higher than
the 5 % tolerance specified by the USB specification. However, the overall voltage
specification for the connection can still be met with a good margin. The decision to
make use of this feature lies with the USB equipment designer.
7.5 GoodLink
Indication of a good USB connection is provided at pin GL through GoodLink
technology. During enumeration, the LED indicator will blink on momentarily. When
the ISP1181B has been successfully enumerated (the peripheral address is set), the
LED indicator will remain permanently on. Upon each successful packet transfer (with
ACK) to and from the ISP1181B, the LED will blink off for 100 ms. During ‘suspend’
state, the LED will remain off.
This feature provides a user-friendly indication of the status of the USB peripheral,
the connected hub, and the USB traffic. It is a useful field diagnostics tool for isolating
faulty equipment. It can therefore help to reduce field support and hotline overhead.
7.6 Bit clock recovery
The bit clock recovery circuit recovers the clock from the incoming USB data stream
using a 4 times over-sampling principle. It is able to track jitter and frequency drift as
specified by the USB Specification Rev. 2.0
7.7 Voltage regulator
A 5 V-to-3.3 V voltage regulator is integrated on-chip to supply the analog transceiver
and internal logic. This voltage is available at pin V
reg(3.3)
to supply an external 1.5 k
pull-up resistor on the D
+
line. Alternatively, the ISP1181B provides SoftConnect
technology via an integrated 1.5 k
pull-up resistor (see
Section 7.4
).
7.8 PLL clock multiplier
A 6 MHz to 48 MHz clock multiplier Phase-Locked Loop (PLL) is integrated on-chip.
This allows for the use of a low-cost 6 MHz crystal, which also minimizes EMI. No
external components are required for the operation of the PLL.
7.9 Parallel I/O (PIO) and Direct Memory Access (DMA) interface
A generic PIO interface is defined for speed and ease-of-use. It also allows direct
interfacing to most microcontrollers. To a microcontroller, the ISP1181B appears as a
memory device with an 8/16-bit data bus and a 1-bit address line. The ISP1181B
supports both multiplexed and non-multiplexed address and data buses.
The ISP1181B can also be configured as a DMA slave device to allow more efficient
data transfer. One of the 14 endpoint FIFOs may directly transfer data to/from the
local shared memory. The DMA interface can be configured independently from the
PIO interface.
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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