参数资料
型号: MC9328MX21VH
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 266 MHz, MICROPROCESSOR, PBGA289
封装: 17 X 17 MM, 1.45 MM HEIGHT, 0.80 MM PITCH, MAPBGA-289
文件页数: 26/106页
文件大小: 1932K
代理商: MC9328MX21VH
MC9328MX21 Product Preview, Rev. 1.1
26
Freescale Semiconductor
Specifications
Figure 9. BMI Drives Clock, MMD Write BMI Timing
(MASTER_MODE_SEL=0, MMD_MODE_SEL=1, MMD_CLKOUT=1)
Note: The BMI_CLK/CS can only be up to 30Mhz if BMI latch data at the falling edge and can be up to 36Mhz (double as max
data pad speed) if BMI latch data at the next rising edge.
Note: Tds1 is the receive data setup time when BMI latch data at the falling edge.
Note: Tds2 is the receive data setup time when BMI latch data at the next rising edge.
3.8.2
Connecting BMI to External Bus Master Devices
In this mode both MASTER_SEL bit and MMD_MODE_SEL bit are cleared and the MMD_CLKOUT
bit is no useful. BMI_WRITE and BMI_CLK/CS are input signals driving by the external bus master. The
Output signal BMI_READ_REQ can be used as an interrupt signal to inform external bus master that data
is ready in the BMI TxFIFO for a read access. The external bus master can write data to the BMI RxFIFO
anytime since the CPU or DMA can move data out from RxFIFO much faster than the BMI interface. An
overflow interrupt is generated if RxFIFO overflow is detected. Once this happens, the new coming data
is ignored.
Each falling edge of BMI_CLK/CS will determine if the current cycle is read or write cycle. It drives data
and enables data out if BMI_WRITE is logic high. The D_EN signal remains active only while BMI_CLK/
CS is logic low and BMI_WRITE is logic high.
Each rising edge of BMI_CLK/CS will determine if data should be latched to RxFIFO from the data bus.
Table 15. MMD Write BMI Timing Table when BMI Drives Clock
Item
Symbol
Minimum
Typical
Maximum
Unit
receive data setup time1
Tds1
14
ns
receive data setup time2
Tds2
14
ns
Can be asserted any time
BMI_CLK/CS
BMI_READ_REQ
BMI_WRITE
BMI_D[15:0]
RxD1
RxD2
Last RxD
Tds1
Tds2
A 1 is written to READ bit of control register
Total has COUNT+1 clocks in one burst
相关PDF资料
PDF描述
MC9328MX21CVG 266 MHz, MICROPROCESSOR, PBGA289
MC9328MX21CVH 266 MHz, MICROPROCESSOR, PBGA289
MC9328MX21DVH 266 MHz, MICROPROCESSOR, PBGA289
MC9328MX21DVG 266 MHz, MICROPROCESSOR, PBGA289
MC9328MXLCVM15R2 32-BIT, 150 MHz, RISC PROCESSOR, PBGA256
相关代理商/技术参数
参数描述
MC9328MX21VK 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
MC9328MX21VK 制造商:Freescale Semiconductor 功能描述:Microprocessor
MC9328MX21VKR2 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
MC9328MX21VM 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
MC9328MX21VM 制造商:Freescale Semiconductor 功能描述:Microprocessor