SDMJ-32 SanDisk, SDMJ-32 Datasheet - Page 61

• Manufacturer Part Number: SDMJ-32
• Manufacturer: SanDisk
• Type: MultiMedia Cardr

Specifications of SDMJ-32

• Density: 32MByte
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Package Type: MMC
• Mounting: Socket
• Pin Count: 7
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Programmable: Yes
• Lead Free Status / RoHS Status: Compliant

Revision 1.3
© 2005 SanDisk Corporation
4.8.1
Command and Response
Card Identification and Card Operation Conditions Timing
The card identification (CMD2) and card operation conditions (CMD1) timing are
processed in the open-drain mode. The card response to the host command starts after
exactly NID clock cycles.
Identification Timing (Card ID Mode)
The minimum delay between the host command and card response is N
This timing diagram is relevant for host command CMD3.
Command Response Timing (ID Mode)
Data Transfer Mode
There is just one Z bit period followed by P bits pushed up by the responding card. This
timing diagram is relevant for all responded host commands except CMD1, 2, 3.
Command Response Timing (Data Transfer Mode)
Last Card Response—Next Host Command Timing
After receiving the last card response, the host can start the next command transmission
after at least N
Timing Response End to Next CMD Start (Data Transfer Mode)
CMD
CMD S T
CMD S T
CMD S T
S T
Host Command
Content
Host Command
Host Command
Content
Content
Content
RC
Response
clock cycles. This timing is relevant for any host command.
CRC
CRC
CRC
CRC
E Z
E Z
E Z
E Z
4-23
N
Z P
CR
N
******
CR
Cycles
Cycles
N
N
RC
******
ID
***
Cycles
******
MultiMediaCard/RS-MultiMediaCard Product Manual
Cycles
Z S T
Chapter 4 – MultiMediaCard Protocol Description
P S T
Z S T
Z S T
Content
Response
Content
Response
Host Command
Content
CID or OCR
CRC
Content
Z
CRC
E
Z
CRC
Z Z
CR
E
Z
clock cycles.
Z Z
Z Z Z
Z
E
04/22/05
Z