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| 型號(hào)： | ISP1761 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Hi-Speed Universal Serial Bus On-The-Go controller |
| 中文描述： | 高速通用串行總線和On - The - Go控制器 |
| 文件頁(yè)數(shù)： | 23/158頁(yè) |
| 文件大?。?/td> | 724K |
| 代理商： | ISP1761 |
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9397 750 13258
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 12 January 2005
23 of 158
Philips Semiconductors
ISP1761
Hi-Speed USB OTG controller
3. Define the IRQ polarity as active LOW or active HIGH in INTR_POL (bit 2) of the HW
Mode Control register. These settings must match the IRQ settings of the host
processor.
By default, interrupt is level-triggered and active LOW.
4. Program the individual Interrupt Enable bits in the HcInterruptEnable register. The
software will need to clear the Interrupt status bits in the HcInterrupt register before
enabling individual interrupt enable bits.
Additional IRQ characteristics can be adjusted in the Edge Interrupt Count register, as
necessary, applicable only when IRQ is set to be edge-active (a pulse of a defined width is
generated every time the IRQ is active).
Bits 15 to 0 of the Edge Interrupt Count register define the IRQ pulse width. The maximum
pulse width that can be programmed is FFFFh, corresponding to a 1 ms pulse width. This
setting is necessary for certain processors that may require a different minimum IRQ
pulse width than the default value. The default IRQ pulse width set at power on is
approximately 500 ns.
Bits 31 to 24 of the Edge Interrupt Count register define the minimum interval between
two interrupts to avoid frequent interrupts to the CPU. The default value of 00h attributed
to these bits determines the normal IRQ generation, without any delay. When a delay is
programmed and the IRQ becomes active after the respective delay, several IRQ events
may have already occurred.
All the interrupt events are represented by the respective bits allocated in the HcInterrupt
register. There is no mechanism to show the order or the moment occurrence of an
interrupt.
The asserted bits in the HcInterrupt register can be cleared by writing back the same
value to the HcInterrupt register. This means that writing logic 1 to each of the set bits will
reset that corresponding bits to the initial inactive state.
The IRQ generation rules that apply according to the preceding settings are:
If an event of interrupt occurs but the respective bit in the Interrupt Enable register is
not set, then the respective HcInterrupt register bit is set but the interrupt signal is not
asserted.
An interrupt will be generated when interrupt is enabled and the respective bit in the
Interrupt Enable register is set.
For a level trigger, an interrupt signal remains asserted until the processor clears the
HcInterrupt register by writing logic 1 to clear the HcInterrupt register bits that are set.
If an interrupt is made edge-sensitive and is asserted, writing to clear the HcInterrupt
register will not have any effect because the interrupt will be asserted for a prescribed
amount of clock cycles.
The clock stopping mechanism does not affect the generation of an interrupt. This is
useful during the suspend and resume cycles, when an interrupt is generated to
signal a wake-up event.
The IRQ generation can also be conditioned by programming the IRQ Mask OR and
IRQ Mask AND registers. Setting some of the bits in these registers to logic 1 will
determine the IRQ generation only when the respective AND or OR conditions of
completing the respective PTDs is met.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISP1761BE | Hi-Speed Universal Serial Bus On-The-Go controller |
| ISP1761ET | Hi-Speed Universal Serial Bus On-The-Go controller |
| ISP2100A | Telecommunication IC |
| ISP2100BN4 | Microprocessor |
| ISP2300 | Controller Miscellaneous - Datasheet Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISP1761BE | 功能描述:USB 接口集成電路 USB HS OTG CTRLR 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 |
| ISP1761BE,518 | 功能描述:USB 接口集成電路 USB HS OTG 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 |
| ISP1761BE,551 | 功能描述:USB 接口集成電路 DO NOT USE ORDER -T OR NO "-" 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 |
| ISP1761BE,557 | 功能描述:USB 接口集成電路 USB HS OTG CTRLR 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 |
| ISP1761BE518 | 制造商:ST-Ericsson 功能描述:IC CONTROLLER USB OTG 128LQFP |
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