參數(shù)資料
型號(hào)： MCIMX27
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Multimedia Applications Processor(多媒體應(yīng)用處理器)
中文描述： 多媒體應(yīng)用處理器（多媒體應(yīng)用處理器）
文件頁數(shù)： 56/118頁
文件大?。?/td> 1159K
代理商： MCIMX27
i.MX27 Data Sheet, Advance Information, Rev. 0.1
56
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
Signal Descriptions
Figure 15. Assertion of DMA External Grant Signal
Figure 16
shows the safe maximum time for which External DMA request can be kept asserted, after
sensing grant signal active such that a new burst is not initiated.
Figure 16. Timing Diagram of Safe Maximums for External Request De-Assertion
3.5.8
Fast Ethernet Controller (FEC)
This section describes the AC timing specifications of the FEC. The MII signals are compatible with
transceivers operating at a voltage of 3.3 V.
Table 23. DMAC Timing Parameters
Parameter
Description
3.0 V
1.8 V
Unit
WCS
BCS
WCS
BCS
T
min_assert
Minimum assertion time of External Grant signal
8hclk+8.6
8hclk+2.74
8hclk+7.17
8hclk+3.25
ns
T
max_req_assert
Maximum External Request assertion time after
assertion of Grant signal
9hclk–20.66
9hclk–6.7
9hclk–17.96
9hclk–8.16
ns
T
max_read
Maximum External Request assertion time after
first read completion
8hclk–6.21
8hclk–0.77
8hclk–5.84
8hclk–0.66
ns
T
max_write
Maximum External Request assertion time after
first write completion
3hclk–5.87
3hclk–8.83
3hclk–15.9
3hclkv91.2
ns
Ext_DMAReq
Ext_DMAGrant
t
min_assert
Ext_DMAReq
Data read from
External device
Data written to
External device
Ext_DMAGrant
t
max_write
t
max_read
t
max_req_assert
NOTE:
Assuming worst case that the data is read/written from/to external device as per the above waveform.
相關(guān)PDF資料
PDF描述
MCIMX31_07 Multimedia Applications Processors
MCIMX31 Multimedia Applications Processors
MCL245 SILICON EPITAXIAL PLANAR DIODE
MCL908QT1 M68HC08 Microcontrollers
MCM63R836 MCM63R836
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCIMX27_08 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processor
MCIMX27ADSE 功能描述:開發(fā)板和工具包 - ARM I.MX27 ADS RoHS:否 制造商:Arduino 產(chǎn)品:Development Boards 工具用于評(píng)估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口類型:DAC, ICSP, JTAG, UART, USB 工作電源電壓:3.3 V
MCIMX27ADSE 制造商:Freescale Semiconductor 功能描述:Development Kit
MCIMX27EC 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processor
MCIMX27IPCAM 功能描述:視頻 IC 開發(fā)工具 I.MX27 IP CAMERA REF RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評(píng)估:LMH1251 工作電源電壓:5 V
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

*
*
*