AU80610004392AAS LBLA Intel, AU80610004392AAS LBLA Datasheet - Page 17

• Manufacturer Part Number: AU80610004392AAS LBLA
• Description: MPU, ATOM PRO, DUALCORE, D510, FC-BGA8
• Manufacturer: Intel
• Series: ATOM - D500r

Specifications of AU80610004392AAS LBLA

• Core Size: 64bit
• Cpu Speed: 1.66GHz
• Digital Ic Case Style: BGA
• No. Of Pins: 559
• Operating Temperature Range: 0°C To +100°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Processor Configuration Registers
1.2.2.2
1.2.2.3
Datasheet
TSEG
TSEG is optionally 1 MB, 2 MB, or 8 MB in size. TSEG is below IGGTT stolen memory,
which is at the top of Low Usable physical memory (TOLUD). SMM-mode CPU accesses
to enabled TSEG access the physical DRAM at the same address. Non-CPU originated
accesses are not allowed to SMM space. DMI and Internal Graphics originated cycle to
enabled SMM space are handled as invalid cycle type with reads and writes to location
0 and byte enables turned off for writes. When the extended SMRAM space is enabled,
CPU accesses to the TSEG range without SMM attribute or without WB attribute are
also forwarded to memory as invalid accesses (see Table 1-8). Non-SMM-mode Write
Back cycles that target TSEG space are completed to DRAM for cache coherency.
When SMM is enabled the maximum amount of memory available to the system is
equal to the amount of physical DRAM minus the value in the TSEG register, which is
fixed at 1 MB, 2 MB or 8 MB.
Pre-allocated Memory
Voids of physical addresses that are not accessible as general system memory and
reside within system memory address range (< TOLUD) are created for SMM-mode,
legacy VGA graphics compatibility, and GFX GTT stolen memory. It is the
responsibility of BIOS to properly initialize these regions. The following table
details the location and attributes of the regions. Enabling/Disabling these ranges are
described in the IMC Control Register Device #0 (GCC).
Table 1-4. Pre-allocated Memory Example for 64 MB DRAM, 1 MB VGA, 1 MB
0000_0000h – 03CF_FFFFh
03D0_0000h – 03DF_FFFFh
03E0_0000h – 03EF_FFFFh
03F0_0000h – 03FF_FFFFh
Memory Segments
GTT stolen and 1 MB TSEG
R/W
SMM Mode Only - CPU Reads
R/W
R/W
Attributes
Available System Memory 61
MB
TSEG Address Range & Pre-
allocated Memory
Pre-allocated Graphics GTT
stolen memory.
1 MB when IGD is enabled.
Pre-allocated Graphics VGA
memory.
1 MB (or
4/8/16/32/64/128/256 MB)
when IGD is enabled.
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