External Memory Interface - LG -P990 Service Manual

3.11 External memory interface

3.11.1 Introduction
Since LGP990 contains communication and application processor, memory is dedicated only for each processor.
XMM6160 (IFX modem) uses MCP (Multi Chip Package) 1Gb nand / 512Mb LPDDR1 and AP20 uses POP (Package
on Package) 512MB LPDDR2 and 8GB eMMC nand memory.
3.11.2 LGP990 XMM6160 (IFX Modem) memory Interface
-Multi Chip Package : DDR SDRAM and NAND Flash merged 1 package
-512Mbit Mobile DDR SDRAM / 1Gbit NAND Flash
Part Name
H8BCS0QG0MMR-
46M
3.11.3 LGP990 AP20 memory Interface
- Package on Package on AP20: DDR2 SDRAM
- 8GB eMMC 4.4 version
LPDDR2
Part Name
H8TBR00U0MLR-0DM
8GB NAND
Part Name
THGBM2G6D2FBAI9
3.11.4 External SD card memory Interface
AP20 supports external SD card which supports up to 32GB (SDHC compatible)
LGE Internal Use Only
Interface Spec
Product Gr Maker
NAND Hynix
SDRAM
Interface Spec
Product Gr Maker
SDRAM Hynix
Interface Spec
Product Gr Maker
NAND Toshiba
Operation Voltage
1.8V
1.8V
Operation Voltage
1.8V/1.2/1.2/1.2
Operation Voltage
2.8V
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3. TECHNICAL BRIEF
Speed
45ns
166MHz
Speed
DDR2 800
(400MHz)
Speed
31MB/s for read
20MB/s for write
Only for training and service purposes