參數(shù)資料
型號(hào)： ISP1761BE,518
廠商： NXP SEMICONDUCTORS
元件分類： 總線控制器
英文描述： UNIVERSAL SERIAL BUS CONTROLLER, PQFP128
封裝： 14 X 20 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT425-1, LQFP-128
文件頁數(shù)： 81/164頁
文件大?。?/td> 767K
代理商： ISP1761BE,518
ISP1761_5
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 13 March 2008
22 of 163
NXP Semiconductors
ISP1761
Hi-Speed USB OTG controller
It is also possible that the system’s DMA will perform a memory-to-memory type of
transfer between the system memory and the ISP1761 memory. The ISP1761 will be
accessed in PIO mode. Consequently, memory read operations must be preceded by
initializing the Memory register (address 033Ch), as described in Section 7.3.1. No IRQ
will be generated by the ISP1761 on completing the DMA transfer but an internal
processor interrupt may be generated to signal that the DMA transfer is completed. This is
mainly useful in implementing the double-buffering scheme for data transfer to optimize
the USB bandwidth.
The ISP1761 DMA programming involves:
Set the active levels of signals DREQ and DACK in the HW Mode Control register.
The DMA Start Address register contains the rst memory address at which the data
transfer will start. It must be word-aligned in 16-bit data bus mode and double word
aligned in 32-bit data bus mode.
The programming of the HcDMAConguration register species:
– The type of transfer that will be performed: read or write.
– The burst size, expressed in bytes, is specied, regardless of the data bus width.
For the same burst size, a double number of cycles will be generated in 16-bit
mode data bus width as compared to 32-bit mode.
– The transfer length, expressed in number of bytes, denes the number of bursts.
The DREQ will be de-asserted and asserted to generate the next burst, as long as
there are bytes to be transferred. At the end of a transfer, the DREQ will be
de-asserted and an IRQ can be generated if DMAEOTINT (bit 3 in the HcInterrupt
register) is set. The maximum DMA transfer size is equal to the maximum memory
size. The transfer size can be an odd or even number of bytes, as required. If the
transfer size is an odd number of bytes, the number of bytes transferred by the
system’s DMA is equal to the next multiple of two for the 16-bit data bus width or
four for the 32-bit data bus width. For a write operation, however, only the specied
odd number of bytes in the ISP1761 memory will be affected.
– Enable ENABLE_DMA (bit 1) of the HcDMAConguration register to determine the
assertion of DREQ immediately after setting the bit.
After programming the preceding parameters, the system’s DMA may be enabled, waiting
for the DREQ to start the transfer or immediate transfer may be started.
The programming of the system’s DMA must match the programming of the ISP1761
DMA parameters. Only one DMA transfer may take place at a time. A PIO mode data
transfer may occur simultaneously with a DMA data transfer, in the same or a different
memory area.
7.4 Interrupts
The ISP1761 will assert the IRQ according to the source or event in the HcInterrupt
register. The main steps to enable the IRQ assertion are:
1. Set GLOBAL_INTR_EN (bit 0) in the HW Mode Control register.
2. Dene the IRQ active as level or edge in INTR_LEVEL (bit 1) of the HW Mode Control
register.
相關(guān)PDF資料
PDF描述
ITR8307 SPECIALTY OPTOELECTRONIC DEVICE
IXF1010 10 CHANNEL(S), 1000M bps, LOCAL AREA NETWORK CONTROLLER, CBGA552
JANTX1N3595US-1 0.15 A, SILICON, SIGNAL DIODE
JAN1N3595US-1 0.15 A, SILICON, SIGNAL DIODE
JANTXV1N3595US-1 0.15 A, SILICON, SIGNAL DIODE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1761BEGE 功能描述:IC USB CTRL HI-SPEED 128LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A
ISP1761BE-S 功能描述:IC USB CONTROLLER 128LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A
ISP1761BE-T 功能描述:USB 接口集成電路 USB HS OTG CNTROLLER 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
ISP1761BEUM 功能描述:IC USB OTG CONTROLLER HS 128LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A
ISP1761ET 功能描述:USB 接口集成電路 USB 2.0 HS OTG HOST 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*