參數(shù)資料
型號(hào)： HB28J128MM3
廠商： Renesas Technology Corp.
英文描述： MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
中文描述： 多媒體32 MByte/64 MByte/128 MByte/256 MByte/512字節(jié)
文件頁(yè)數(shù)： 51/91頁(yè)
文件大?。?/td> 526K
代理商： HB28J128MM3
HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
Rev.0.02, Sep.15.2004, page 51 of 89
Stream read
The data transfer starts N
AC
clock cycles after the end bit of the host command. The bus transaction is
identical to that of a read block command (refer to Figure
“
Data Read Timing
”
). As the data transfer is not
block-oriented, the data stream does not include the CRC checksum. Consequently the host can not check
for data validity. The data stream is terminated by a stop command. The corresponding bus transaction is
identical to the stop command for the multiple read block (refer to Figure
“
Timing of Stop Command
”
).
Single or multiple block write
The host selects one card for data write operation by CMD7. The host sets the valid block length for
block-oriented data transfer by CMD16 (The write-block-length of the Renesas MultiMediaCard is
permanently assigned to the value 512 bytes). The host transfers the data with CMD24. The address of the
data block is determined by the argument of this command. This command is responded by the card on the
CMD line as usual. The data transfer from the host starts N
WR
clock cycles after the card response was
received. The write data have CRC check bits to allow the card to check the transferred data for
transmission errors. The card sends the CRC check information as a CRC status to the host (on the data
line). The CRC status contains the information if the write data transfer was non-erroneous (the CRC
check did not fail) or not. In the case of transmission error the card sends a negative CRC status (
“
101
”
bin) which forces the host to retransmit command and the data. In the case of non-erroneous transmission
the card sends a positive CRC status (
“
010
”
bin) and starts the data programming procedure.
S T content CRC E
CMD
DAT
CMD
DAT
Z Z Z
* * * *
* * * *
Z
Z Z S
E S
E
status
busy = 'L'
Z
Z
Z Z Z Z Z Z
Z Z Z Z
CRC E
content
L ... pull down to LOW bit
Host command
N
CR
S T content CRC E
S
Z P
Card response
content
N
WR
Write data
CRC status
Card busy
Z
Host active
Card active
Host active
Host active
Card active
Write data
Timing of The Block Write Command
If the card does not have any more free data receive buffer, the card indicates it by pulling down the data
line to LOW. The card stops pulling down the data line as soon as at least one receive buffer for the
defined data transfer block length becomes free. This signaling does not give any information about the
data write status. This information has to be polled by CMD13 polling command (SEND_STATUS).
相關(guān)PDF資料
PDF描述
HB28J128RM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
HB28J256MM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
HB28J256RM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
HB28L064RM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
HB28K032MM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HB2A102K-S265B 制造商:Hitano Enterprise Corp 功能描述:Bulk
HB2A102K-S565B 制造商:Hitano Enterprise Corp 功能描述:Bulk
HB2A103K-S565B 制造商:Hitano Enterprise Corp 功能描述:
HB2A122K-S265B 制造商:Hitano Enterprise Corp 功能描述:
HB2A122K-S565B 制造商:Hitano Enterprise Corp 功能描述:Bulk
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

*
*
*