參數(shù)資料
型號(hào): rosa51
廠商: SIEMENS AG
英文描述: MultiMediaCard Adapter(多媒體卡適配器)
中文描述: 多媒體卡(多媒體卡適配器)
文件頁數(shù): 14/54頁
文件大?。?/td> 510K
代理商: ROSA51
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Siemens AG Semiconductors
Version 5.2
Confidential
20/10/1998
14
defined:
Commands are one byte long. Arguments are between one and four bytes long. The variable length
format of the command (+ argument) operation is the main difference to the fixed length of the Mul-
tiMediaCard bus command structure. These operations do not contain any stuffing and need not be
CRC protected.
Most MultiMediaCard bus commands have a response. This response will be stored within the
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G
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byte
-
-
This operation requires a system command byte
transfer.
This operation requires besides the command an
argument like an address or configuration parameter.
This operation requires besides the command: an
argument, e.g. an address or configuration parameter,
and payload data. If the payload is read from a card,
then the application will change the direction for the
data transfer after the argument is written.
This operation requires no argument but data blocks
or stream.
CA
byte
argument of
up to 4 bytes
argument of
up to 4 bytes
-
CAD
byte
(read or
write) data
CD
byte
-
(read or
write) data
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&RPPDQG
CAD
&RPPDQG
'DWD
'DWDEORFN
from
application
to adapter
data from
adapter
to application
or vice versa
CA
C
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CD
&RPPDQG
'DWD
'DWDEORFN
from
application
to adapter
data from
adapter
to application
or vice versa
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