Specifications
MC9328MX21 Technical Data, Rev. 3.4
Freescale Semiconductor
39
Figure 28. Timing Diagrams at Data Read
Figure 29 shows the basic write operation timing. As with the read operation, after the card response, the
data transfer starts after NWR cycles. The data is suffixed with CRC check bits to allow the card to check
for transmission errors. The card sends back the CRC check result as a CC status token on the data line. If
there was a transmission error, the card sends a negative CRC status (101); otherwise, a positive CRC
status (010) is returned. The card expects a continuous flow of data blocks if it is configured to multiple
block mode, with the flow terminated by a stop transmission command.
NAC cycles
Read Data
Timing of single block read
NAC cycles
Read Data
Timing of multiple block read
NAC cycles
NST
Timing of stop command
(CMD12, data transfer mode)
Host Command
Response
NCR cycles
CMD
Content
S T
E Z Z P
P S T
Content
CRC E Z
******
CRC
DAT
Z****Z
Z Z P
P S D
*****
D D D
DAT
Z****Z
Z Z P
P S D
*****
******
D D D
P
*****
P S D D D D
******
Host Command
Response
NCR cycles
CMD
Content
S T
E Z Z P
P S T
Content
CRC E Z
******
CRC
*****
Read Data
Host Command
Response
NCR cycles
CMD
Content
S T
E Z Z P
P S T
Content
CRC E Z
******
CRC
Valid Read Data
DAT
*****
Z
E
*****
D D D D
Z
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參數(shù)描述
MC9328MX21CVG 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:i.MX family of microprocessors
MC9328MX21CVH 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:i.MX family of microprocessors
MC9328MX21CVK 功能描述:處理器 - 專門應(yīng)用 DB I.MX21 PB-FR RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
MC9328MX21CVK 制造商:Freescale Semiconductor 功能描述:Microcontroller
MC9328MX21CVKR2 功能描述:處理器 - 專門應(yīng)用 DB I.MX21 PB-FR RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432