參數(shù)資料
型號(hào)： MCIMX258CVM4
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 400 MHz, MICROPROCESSOR, PBGA400
封裝： 17 X 17 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MAPBGA-400
文件頁數(shù)： 97/154頁
文件大?。?/td> 1498K
代理商： MCIMX258CVM4
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 8
Freescale Semiconductor
47
To meet PIO write mode timing requirements, a number of timing parameters must be controlled. Table 37
shows timing parameters and their determining relations, and indicates parameters that can be adjusted to
meet required conditions.
3.7.2.2
Multiword DMA (MDMA) Mode Timing
Figure 13 and Figure 14 show the timing for MDMA read and write modes, respectively.
Figure 13. MDMA Read Mode Timing
Table 37. Timing Parameters for PIO Write Mode
ATA
Parameter
PIO Write
Mode Timing
Parameter1
Relation
Adjustable Parameter(s)
t1
t1(min.) = time_1
× T – (tskew1 + tskew2 + tskew5)
time_1
t2
t2w
t2(min.) = time_2w
× T – (tskew1 + tskew2 + tskew5)
time_2w
t9
t9(min.) = time_9
× T – (tskew1 + tskew2 + tskew6)
time_9
t3
—
t3(min.) = (time_2w – time_on)
× T – (tskew1 + tskew2 +tskew5)
if not met, increase time_2w
t4
t4(min.) = time_4
× T – tskew1
time_4
tA
tA = (1.5 + time_ax)
× T – (tco + tsui + tcable2 + tcable2 + 2 × tbuf)
time_ax
t0
—
t0(min.) = (time_1 + time_2 + time_9)
× T
time_1, time_2r, time_9
—
Avoid bus contention when switching buffer on by making ton long
enough
—
Avoid bus contention when switching buffer off by making toff long
enough
—
ADDR
(See note 1)
DIOR
READ Data(15:0)
DMARQ
DMACK
tm
td
tk
tkjn
tgr
tfr
tk1
te
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCIMX25LPDK 制造商:Freescale Semiconductor 功能描述:PRODUCT DEVELOPMENT KIT FOR THE I MX25 APPLICATIONS PROCESSO - Boxed Product (Development Kits) 制造商:Freescale Semiconductor 功能描述:KIT DEV I.MX25 FOR LINUX 制造商:Freescale 功能描述:Product Development Kit For The I.MX25 Applications Processor
MCIMX25LPDKJ 功能描述:開發(fā)板和工具包 - ARM HARDWARE 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
MCIMX25LPDKJ 制造商:Freescale Semiconductor 功能描述:; LEADED PROCESS COMPATIBLE:YES; PEAK RE
MCIMX25PDKCPUJ 功能描述:開發(fā)板和工具包 - ARM CPU BD, MX25, LINUXJ 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
MCIMX25WPDK 功能描述:開發(fā)板和工具包 - ARM MCIMX25 PDK ForLINUX 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
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