参数资料
型号: MC9328MX1DVM20
厂商: Freescale Semiconductor
文件页数: 69/100页
文件大小: 0K
描述: IC MCU I.MX 200MHZ 256-MAPBGA
标准包装: 152
系列: i.MX1
核心处理器: ARM9
芯体尺寸: 32-位
速度: 200MHz
连通性: EBI/EMI,I²C,MMC,智能卡,SPI,SSI,UART/USART,USB
外围设备: DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 110
程序存储器类型: ROMless
电压 - 电源 (Vcc/Vdd): 1.7 V ~ 3.3 V
振荡器型: 外部
工作温度: -30°C ~ 70°C
封装/外壳: 256-MAPBGA
包装: 托盘
Functional Description and Application Information
MC9328MX1 Technical Data, Rev. 7
70
Freescale Semiconductor
Figure 48. Timing Diagrams at Identification Mode
After a card receives its RCA, it switches to data transfer mode. As shown on the first diagram in
Figure 49, SD_CMD lines in this mode are driven with push-pull drivers. The command is followed by a
period of two Z bits (allowing time for direction switching on the bus) and then by P bits pushed up by the
responding card. The other two diagrams show the separating periods NRC and NCC.
Figure 49. Timing Diagrams at Data Transfer Mode
Figure 50 shows basic read operation timing. In a read operation, the sequence starts with a single block
read command (which specifies the start address in the argument field). The response is sent on the
SD_CMD lines as usual. Data transmission from the card starts after the access time delay NAC, beginning
from the last bit of the read command. If the system is in multiple block read mode, the card sends a
continuous flow of data blocks with distance NAC until the card sees a stop transmission command. The
data stops two clock cycles after the end bit of the stop command.
SET_RCA Timing
Identification Timing
Host Command
CID/OCR
NID cycles
CMD
Content
S T
E Z
Z S T
Content
Z Z
******
CRC
Z
Host Command
CID/OCR
NCR cycles
CMD
Content
S T
E Z
Z S T
Content
Z Z
******
CRC
Z
Timing of command sequences (all modes)
Timing response end to next CMD start (data transfer mode)
Command response timing (data transfer mode)
Host Command
Response
NCR cycles
CMD
Content
S T
E Z Z P
P S T
Content
CRC E Z Z
******
CRC
Z
Response
Host Command
NRC cycles
CMD
Content
S T
E Z
Z S T
Content
CRC E Z Z
******
CRC
Z
Host Command
NCC cycles
CMD
Content
S T
E Z
Z S T
Content
CRC E Z Z
******
CRC
Z
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