SanDisk SDSDB-016G-A11 Product Manual - Page 70
Example for Switching
UPC - 619659055639
View all SanDisk SDSDB-016G-A11 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 70 highlights
Revision 2.2 Chapter 4 - SD Card Protocol Description SanDisk SD Card Product Manual Case (2) - Check function with error CMD6 argument = '0000 0000 1111 1000 1111 0010 0000 0001' Read Data = [511:496] = '0000 0000 0000 0000' (means error) [495:400] = '1000 0000 0000 0001' & '1000 0000 0000 0001' & '1000 0000 0000 0001'& '1000 0000 0000 0001' & '1000 0000 0000 0011' & '1000 0000 0000 0011' [399:376] = '0000 1111 0000 1111 0000 0001' [375:0] = Reserved (All 0s) Error Example for Switching Card condition Support function = command system : For eC(0x1), access mode : High-speed(0x1) Current function = command system : For eC(0x1), access mode : Default(0x0) Switch example : command system : For eC => Default, access mode : Default => High-speed Case (3) - Switch function with no error CMD6 argument = '1000 0000 1111 1111 1111 1111 0000 0001' Read Data = [511:496] = '0000 0000 0010 0000' (=64mA) [495:400] = '1000 0000 0000 0001' & '1000 0000 0000 0001' & '1000 0000 0000 0001'& '1000 0000 0000 0001' & '1000 0000 0000 0011' & '1000 0000 0000 0011' [399:376] = '0000 0000 0000 0000 0000 0001' [375:0] = Reserved (All 0s) For eC High-speed Case (4) - Switch function with error No influence Default CMD6 argument = '1000 0000 1111 1000 1111 0010 0000 0001' Read Data = [511:496] = '0000 0000 0000 0000' (means error) [495:400] = '1000 0000 0000 0001' & '1000 0000 0000 0001' & '1000 0000 0000 0001'& '1000 0000 0000 0001' & '1000 0000 0000 0011' & '1000 0000 0000 0011' [399:376] = '0000 1111 0000 1111 0001 0000' [375:0] = Reserved (All 0s) 4.4.11 Error High-speed Mode19 (25MB/sec interface speed) Although revision 1.01 of the SD Physical Layer Specification supports up to 12.5MB/sec interface speed, the speed of 25MB/sec is necessary to support increasing performance needs of the host and because of growing memory size. To achieve the 25MB/sec interface speed, the clock rate is increased to 50MHz and CLK/CMD/DAT signal timing and circuit conditions are reconsidered and changed from Physical Layer Specification Version 1.01. After power-up, the SD Card is in Default Speed mode. Revision 1.10 (and greater) SD cards can be placed in high-speed mode using the Switch Function command (CMD6). The high-speed function belongs to access mode group. 19 High-speed mode is not supported in SPI Mode. © 2004 SanDisk Corporation 4-26 12/08/04