收藏本站
参数资料
型号： MC9328MX21CVK
厂商： Freescale Semiconductor
文件页数： 38/100页
文件大小： 0K
描述： IC MCU I.MX21 266MHZ 289-MAPBGA
标准包装： 152
系列： i.MX21
核心处理器： ARM9
芯体尺寸： 32-位
速度： 266MHz
连通性： 1 线，EBI/EMI，I²C，IrDA，MMC，智能卡，SPI，SSI，UART/USART，USB OTG
外围设备： DMA，I²S，LCD，POR，PWM，WDT
输入/输出数： 192
程序存储器类型： ROMless
电压 - 电源 (Vcc/Vdd)： 1.45 V ~ 3.3 V
振荡器型： 外部
工作温度： -40°C ~ 85°C
封装/外壳： 289-LFBGA
包装： 托盘
MC9328MX21 Technical Data, Rev. 3.4
42
Freescale Semiconductor
Specifications
3.12.2
SDIO-IRQ and ReadWait Service Handling
In SDIO, there is a 1-bit or 4-bit interrupt response from the SDIO peripheral card. In 1-bit mode, the
interrupt response is simply that the SD_DAT[1] line is held low. The SD_DAT[1] line is not used as data
in this mode. The memory controller generates an interrupt according to this low and the system interrupt
continues until the source is removed (SD_DAT[1] returns to its high level).
In 4-bit mode, the interrupt is less simple. The interrupt triggers at a particular period called the Interrupt
Period during the data access, and the controller must sample SD_DAT[1] during this short period to
determine the IRQ status of the attached card. The interrupt period only happens at the boundary of each
block (512 bytes).
Figure 31. SDIO IRQ Timing Diagram
ReadWait is another feature in SDIO that allows the user to submit commands during the data transfer. In
this mode, the block temporarily pauses the data transfer operation counter and related status, yet keeps
the clock running, and allows the user to submit commands as normal. After all commands are submitted,
the user can switch back to the data transfer operation and all counter and status values are resumed as
access continues.
Figure 32. SDIO ReadWait Timing Diagram
Command read cycle
NRC
8
–
Clock cycles
Command-command cycle
NCC
8
–
Clock cycles
Command write cycle
NWR
2
–
Clock cycles
Stop transmission cycle
NST
2
Clock cycles
TAAC: Data read access time -1 defined in CSD register bit[119:112]
NSAC: Data read access time -2 in CLK cycles (NSAC100) defined in CSD register bit[111:104]
Table 28. Timing Values for Figure 26 through Figure 30 (Continued)
Parameter
Symbol
Minimum
Maximum
Unit
Interrupt Period
IRQ
DAT[1]
For 4-bit
L H
Interrupt Period
DAT[1]
For 1-bit
CMD
Content
S T
E Z Z P
E Z Z
******
Z Z
Response
CRC
S
Z
E
S
Block Data
E
S
Block Data
DAT[1]
For 4-bit
DAT[2]
For 4-bit
CMD
******
P S T
E Z Z
******
CMD52
Z
CRC
E Z Z
S Block Data
L L L L L L L L L L L L L L L L L L L L L H Z S
E
S Block Data
E
Block Data
Z Z L H
E
S Block Data
相关PDF资料
PDF描述
VI-26N-CU-S CONVERTER MOD DC/DC 18.5V 200W
AD74111YRUZ-REEL IC CODEC AUDIO MONO LP 16TSSOP
VI-B23-IW-B1 CONVERTER MOD DC/DC 24V 100W
VI-J3W-IX-S CONVERTER MOD DC/DC 5.5V 75W
SSM2603CPZ-REEL7 IC CODEC AUDIO LOW POWER 28LFCSP
相关代理商/技术参数
参数描述
MC9328MX21CVK 制造商:Freescale Semiconductor 功能描述:Microcontroller
MC9328MX21CVKR2 功能描述:处理器 - 专门应用 DB I.MX21 PB-FR RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432
MC9328MX21CVM 功能描述:处理器 - 专门应用 DB I.MX21 17X17 PB-FR RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432
MC9328MX21CVM 制造商:Freescale Semiconductor 功能描述:Microprocessor
MC9328MX21CVMR2 功能描述:处理器 - 专门应用 DB I.MX21 17X17 PB-FR RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*