參數(shù)資料
型號(hào)： MC94MX21DVKN3R2
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 350 MHz, MICROPROCESSOR, PBGA289
封裝： 14 X 14 MM, 1.41 MM HEIGHT, 0.65 MM PITCH, LEAD FREE, PLASTIC, BGA-289
文件頁(yè)數(shù)： 30/98頁(yè)
文件大?。?/td> 1326K
代理商： MC94MX21DVKN3R2
MC94MX21 Technical Data, Rev. 1.
5
36
Freescale Semiconductor
Specifications
3.12.1
Command Response Timing on MMC/SD Bus
The card identification and card operation conditions timing are processed in open-drain mode. The card
response to the host command starts after exactly NID clock cycles. For the card address assignment,
SET_RCA is also processed in the open-drain mode. The minimum delay between the host command and
card response is NCR clock cycles as illustrated in Figure 26. The symbols for Figure 26 through
Figure 30 are defined in Table 26.
Figure 26. 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 27, 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.
Table 26. State Signal Parameters for Figure 26 through Figure 30
Card Active
Host Active
Symbol
Definition
Symbol
Definition
Z
High impedance state
S
Start bit (0)
D
Data bits
T
Transmitter bit
(Host = 1, Card = 0)
*
Repetition
P
One-cycle pull-up (1)
CRC
Cyclic redundancy check bits (7 bits)
E
End bit (1)
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
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MC94MX21DVKN3
相關(guān)PDF資料
PDF描述
MC9S08FL8CLC 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, QFP32
MC9S08FL8CBM 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDIP32
MC9S08FL16CBM 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDIP32
MC9S08GW64CLH MICROCONTROLLER, PQFP64
MC9S08GW64CLK MICROCONTROLLER, PQFP80
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC94MX21DVKN3R2 制造商:Freescale Semiconductor 功能描述:32-bit Embedded Microprocessors
MC950 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:INTEGRATED CIRCUITS
MC951 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:INTEGRATED CIRCUITS
MC952 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:INTEGRATED CIRCUITS
MC953 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:INTEGRATED CIRCUITS
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*