Chapter 3 – iNAND Interface Description
Revision 1.1
3.2
Bus Topologies
PRELIMINARY
SanDisk iNAND Product Manual
SanDisk iNAND products support two communication protocols: SD and SPI. For more
details, refer to Section 3.5 of the SDA Physical Layer Specification , Version 2.00 . Section
6 of the specification contains a bus circuitry diagram for reference .
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.4
3.4.1
3.4.2
SD Bus
For more details, refer to Section 3.5.1 of the SDA Physical Layer Specification, Version
2.00.
SPI Bus
For more details, refer to Section 3.5.2 of the SDA Physical Layer Specification, Version
2.00.
Electrical Interface
The power scheme of SanDisk iNAND is handled locally in each card and in the bus
master. Refer to Section 6.4 of the SDA Physical Layer Specification , Version 2.00 .
Power Up
Refer to Section 6.4.1 of the SDA Physical Layer Specification, Version 2.00 .
Bus Operating Conditions
SPI Mode bus operating conditions are identical to SD Bus Mode operating conditions. For
details, see Section 6.6 of the SDA Physical Layer Specification , Version 2.00 .
Bus Timing (Default)
See Section 6.7 of the SDA Physical Layer Specification, Version 2.00.
Bus Timing (High-Speed Mode)
See Section 6.8 of the SDA Physical Layer Specification, Version 2.00 .
iNAND Registers
There is a set of eight registers within the iNAND interface. For specific information about
each register, refer to Section 5 of the SDA Physical Layer Specification, Version 2.00 .
Operating Conditions Register
The Operation Conditions Register (OCR) stores the VDD voltage profile for iNAND.
Refer to Section 5.1 of the SDA Physical Layer Specification , Version 2.00 .
Card Identification Register
The Card Identification (CID) Register is 16 bytes long and contains the unique card
identification number. It is programmed during manufacturing and cannot be changed by
iNAND hosts. See Table 3-4.
? 2007 SanDisk Corporation
3-3
02/09/07
相关PDF资料
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