资料介绍
boot up procedureSystem Service - Boot-up Procedure (V 0.1)
By Shalyn Chua MediaTek Inc. Wireless Communications BU
Outline
External Memory Interface (EMI)
Introduction Customization
Memory access Driving strength How MTK base-band chip determines the address 0x00?
Remapping
Boot-up flow
BOOTROM From BOOTROM to flash From Assembly to C code
QA
EMI - Introduction
MT6218B,
8 external chip selects (\CS0 to \CS7) Features
Deep address range up to 128MB, Fixed start address, Both page mode and burst mode are supportable,
Available page size are 8, 16, 32 and 64 Bytes.
8-bits or 16-bits device supportable, Rich of fine-tune items,
Read set-up time Write set-up time Write hold time.
Data/Instruction Cache and Pre-fetch are selectable on each chip select (Refer to re