MD4811-D512-V3Q18-X-P/Y SanDisk, MD4811-D512-V3Q18-X-P/Y Datasheet - Page 69
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MD4811-D512-V3Q18-X-P/Y
Manufacturer Part Number
MD4811-D512-V3Q18-X-P/Y
Description
IC MDOC G3 512MB 48-TSOP
Manufacturer
SanDisk
Datasheet
1.MD4331-D1G-V3Q18-X-PY.pdf
(97 pages)
Specifications of MD4811-D512-V3Q18-X-P/Y
Format - Memory
FLASH
Memory Type
FLASH - Nand
Memory Size
512M (64M x 8)
Speed
55ns
Interface
Parallel
Voltage - Supply
2.5 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
48-TSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
585-1136
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8.3.2
In non-PC architectures, the boot code is executed from a boot ROM, and the drivers are usually
loaded from the storage device.
When using Mobile DiskOnChip G3 as the system boot device, the CPU fetches the first
instructions from the Mobile DiskOnChip G3 Programmable Boot Block, which contains the IPL.
Since in most cases this block cannot hold the entire boot loader, the IPL runs minimum
initialization, after which the Secondary Program Loader (SPL) is copied to RAM from flash. The
remainder of the boot loader code then runs from RAM.
The IPL and SPL are located in a separate (binary) partition on Mobile DiskOnChip G3, and can be
hardware protected if required. .
8.3.3
Platforms that host CPUs that wake up in MultiBurst mode should use Asynchronous Boot mode
when using Mobile DiskOnChip G3 as the system boot device.
During platform initialization, certain CPUs wake up in 32-bit mode and issue instruction fetch
cycles continuously. An XScale CPU, for example, initiates a 16-bit read cycle, but after the first
word is read, it continues to hold CE# and OE# asserted while it increments the address and reads
additional data as a burst. A StrongARM CPU wakes up in 32-bit mode and issues double-word
instruction fetch cycles.
Once in Asynchronous Boot mode, the CPU can fetch its instruction cycles from the Mobile
DiskOnChip G3 Programmable Boot Block. After reading from this block and completing boot,
Mobile DiskOnChip G3 returns to derive its internal clock signal from the CE#, OE# and WE#
inputs. Please refer to Section 10.3 for read timing specifications for Asynchronous Boot mode.
66
Non-PC Architectures
Asynchronous Boot Mode
Preliminary Data Sheet, Rev. 1.1
Mobile DiskOnChip G3
91-SR-011-05-8L
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