SanDisk SDSDH-1024 Product Manual - Page 66

Mode 1 Operation-Set Function, Table 4-9, Functions

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Revision 2.2 Chapter 4 - SD Card Protocol Description SanDisk SD Card Product Manual Mode 1 Operation-Set Function CMD6 is used in Mode 1 to switch the functionality of the card. Switching to a new functionality is accomplished by performing the following actions. 1. Set the mode bit to 1. 2. Select only one function in each function group. Setting the function to 0x0 selects the default function. It is recommended to specify 0xF (no influence) for all selected functions except for functions that need to be changed. Selecting 0xF will keep the current function that was selected for the function group. In response to a set function, the switch function status will return the following. − The function that is the result of the switch command. In case of invalid selection of one function or more, all set values are ignored and no change will be done (identical to the case where the host selects 0xF for all functions groups). The response to an invalid selection of function will be 0xF. − Maximum current consumption under the selected functions. If one of the selected functions was strong the return value will be 0. Table 4-9 Functions Arg. Slice Group No. Function Name 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9 0xA 0xB 0xC 0xD 0xE [23:20] 6 reserved [19:16] 5 reserved Default (v1.01) Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved 0xF No influence [15:12] 4 reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved [11:8] 3 reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved [7:4] 2 Command system [3:0] 1 Access mode For eC Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Vendor specific High-speed Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved © 2004 SanDisk Corporation 4-22 12/08/04

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Chapter 4 – SD Card Protocol Description
Revision 2.2
SanDisk SD Card Product Manual
© 2004 SanDisk Corporation
4-22
12/08/04
Mode 1 Operation—Set Function
CMD6 is used in Mode 1 to switch the functionality of the card.
Switching to a new functionality is accomplished by performing the following actions.
1.
Set the mode bit to 1.
2.
Select only one function in each function group.
Setting the function to 0x0 selects
the default function.
It is recommended to specify 0xF (no influence) for all selected
functions except for functions that need to be changed.
Selecting 0xF will keep the
current function that was selected for the function group.
In response to a set function, the switch function status will return the following.
−
The function that is the result of the switch command.
In case of invalid
selection of one function or more, all set values are ignored and no change will
be done (identical to the case where the host selects 0xF for all functions groups).
The response to an invalid selection of function will be 0xF.
−
Maximum current consumption under the selected functions.
If one of the
selected functions was strong the return value will be 0.
Table 4-9
Functions
Arg. Slice
[23:20]
[19:16]
[15:12]
[11:8]
[7:4]
[3:0]
Group No.
6
5
4
3
2
1
Function
Name
reserved
reserved
reserved
reserved
Command
system
Access
mode
0x0
Default (v1.01)
0x1
Reserved
Reserved
Reserved
Reserved
For eC
High-speed
0x2
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0x3
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0x4
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0x5
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0x6
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0x7
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0x8
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0x9
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0xA
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0xB
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0xC
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0xD
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0xE
Reserved
Reserved
Reserved
Reserved
Vendor
specific
Reserved
0xF
No influence