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)： 42/70頁
文件大?。?/td> 341K
代理商： ISP1181B
Philips Semiconductors
ISP1181B
Full-speed USB peripheral controller
Product data
Rev. 02 — 07 December 2004
42 of 70
9397 750 13958
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Bits RESET, RESUME, SP_EOT, EOT and SOF are cleared upon reading the
Interrupt Register. The endpoint bits (EP0OUT to EP14) are cleared by reading the
associated Endpoint Status Register.
Bit BUSTATUS follows the USB bus status exactly, allowing the firmware to get the
current bus status when reading the Interrupt Register.
SETUP and OUT token interrupts are generated after ISP1181B has acknowledged
the associated data packet. In bulk transfer mode, the ISP1181B will issue interrupts
for every ACK received for an OUT token or transmitted for an IN token.
In isochronous mode, an interrupt is issued upon each packet transaction. The
firmware must take care of timing synchronization with the host. This can be done via
the Pseudo Start-Of-Frame (PSOF) interrupt, enabled via bit IEPSOF in the Interrupt
Enable Register. If a Start-Of-Frame is lost, PSOF interrupts are generated every
1 ms. This allows the firmware to keep data transfer synchronized with the host. After
3 missed SOF events the ISP1181B will enter ‘suspend’ state.
An alternative way of handling isochronous data transfer is to enable both the SOF
and the PSOF interrupts and disable the interrupt for each isochronous endpoint.
Fig 8.
Interrupt logic.
MGS772
RESET
SUSPND
RESUME
SOF
EP14
...
EP0IN
.
.
.
.
EP0OUT
EOT
IERST
interrupt register
interrupt enable
register
IESUSP
IERESM
IESOF
IEP14
...
IEP0IN
IEP0OUT
IEEOT
device mode
register
INTENA
INTLVL
hardware configuration
register
INTPOL
PULSE
GENERATOR
INT
1
0
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PDF描述
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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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