
- 50 -
3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.9 External memory interface
The MSM6245 device was designed to provide two distinct memory interfaces. EBI1 was targeted for
supporting high speed synchronous memory devices. EBI2 was targeted towards supporting slower
asynchronous devices such as LCD, NAND flash, SDRAM, etc.
• EBI1 Features
- 16 bit static and dynamic memory interface
- 32 bit dynamic memory interface
- 24 bits of address for static memory devices which can support up to 32MBytes on each chip select
- Synchronous burst memories supported (burst NOR, burst PSRAM)
- Synchronous DRAM memories supported
- Byte addressable memory supporting 8 bit, 16 bit and 32 bit accesses
- Pseudo SRAM (PSRAM) memory support
• EBI2 Features
- Support for asynchronous FLASH and SRAM(16bit & 8bit).
- Interface support for byte addressable 16bit devices (UB_N & LB_N signals).
- Support for 8 bit/16bit wide NAND flash.
- Support for parallel LCD interfaces, port mapped of memory mapped(18 or 16 bit).
• 1Gb NAND(16bit) flash 512Mb SDRAM (32bit)
Interface Spec
Device
Part Name
Maker
Read Access Time
Write Access Time
FLASH
TY9000A800KOGG
Toshiba
60 ns
60 ns
SDRAM
TY9000A800KOGG
Toshiba
7 ns
7 ns
Table#1. External memory interface
Summary of Contents for U370
Page 1: ...Date January 2008 Issue 1 0 Service Manual Model U370 Service Manual U370 ...
Page 178: ...Note ...
Page 179: ...Note ...