參數(shù)資料
型號(hào): ISP1362EE,551
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PBGA64
封裝: 6 X 6 MM, 0.80 HEIGHT, PLASTIC, MO-195, SOT-543-1, TFBGA-64
文件頁數(shù): 72/152頁
文件大?。?/td> 677K
代理商: ISP1362EE,551
ISP1362_5
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
26 of 152
NXP Semiconductors
ISP1362
Single-chip USB OTG Controller
HcTransferCounter
If DMACounterEnable of the HcDMAConguration register is set (that is, the DMA
counter is enabled), HcTransferCounter must be set to the number of bytes to be
transferred.
HcDMAConguration
Read or write DMA (bit 0)
Targeted buffer: ISTL0, ISTL1, ATL and INTL (bits 1 to 3)
DMA enable or disable (bit 4)
Burst length (bits 5 to 6)
DMA counter enable (bit 7)
Remark: Congure the HcDMAConguration register only after you have congured all
the other registers. The ISP1362 will assert DREQ1 once the DMA enable bit in this
register is set.
8.6.2 Combining the two DMA channels
The ISP1362 allows systems with limited DMA channels to use a single DMA channel
(DMA1) for both the Host Controller and the Peripheral Controller. This option can be
enabled by writing logic 1 to the OneDMA bit of the HcHardwareConguration register. If
this option is enabled, the polarity of the Peripheral Controller DMA and the Host
Controller DMA must be set to DACK active LOW and DREQ active HIGH.
8.7 Interrupts
Various events in the Host Controller, the Peripheral Controller and the OTG Controller
can be programmed to generate a hardware interrupt. By default, the interrupt generated
by the Host Controller and the OTG Controller is routed out at the INT1 pin and the
interrupt generated by the Peripheral Controller is routed out at the INT2 pin.
8.7.1 Interrupt in the Host Controller and the OTG Controller
There are two levels of interrupts represented by level 1 and level 2 (see Figure 14).
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