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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)： | 43/70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
43 of 70
9397 750 13958
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
14. Power supply
The ISP1181B is powered from a single supply voltage, ranging from 4.0 V to 5.5 V.
An integrated voltage regulator provides a 3.3 V supply voltage for the internal logic
and the USB transceiver. This voltage is available at pin V
reg(3.3)
for connecting an
external pull-up resistor on USB connection D
+
. See
Figure 9
.
The ISP1181B can also be operated from a 3.0 V to 3.6 V supply, as shown in
Figure 10
. In this case, the internal voltage regulator is disabled and pin V
reg(3.3)
must
be connected to V
CC
.
15. Crystal oscillator and LazyClock
The ISP1181B has a crystal oscillator designed for a 6 MHz parallel-resonant crystal
(fundamental). A typical circuit is shown in
Figure 11
. Alternatively, an external clock
signal of 6 MHz can be applied to input XTAL1, while leaving output XTAL2 open.
The 6 MHz oscillator frequency is multiplied to 48 MHz by an internal PLL. This
frequency is used to generate a programmable clock output signal at pin CLKOUT,
ranging from 3 MHz to 48 MHz.
In ‘suspend’ state the normal CLKOUT signal is not available, because the crystal
oscillator and the PLL are switched off to save power. Instead, the CLKOUT signal
can be switched to the LazyClock frequency of 100 kHz
±
50 %.
The oscillator operation and the CLKOUT frequency are controlled via the Hardware
Configuration Register, as shown in
Figure 12
. The following bits are involved:
CLKRUN switches the oscillator on and off
CLKDIV[3:0] is the division factor determining the normal CLKOUT frequency
NOLAZY controls the LazyClock signal output during ‘suspend’ state.
Fig 9.
ISP1181B with a 4.0 V to 5.5 V supply.
Fig 10. ISP1181B with a 3.0 V to 3.6 V supply.
VCC
VCC(3.3)
Vreg(3.3)
ISP1181B
004aaa140
4.0 V to 5.5 V
Vref
3.0 V to 3.6 V
004aaa141
VCC
VCC(3.3)
Vreg(3.3)
ISP1181B
Vref
Fig 11. Typical oscillator circuit.
CLKOUT
6 MHz
18 pF
18 pF
XTAL2
XTAL1
004aaa142
ISP1181B
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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