TVME8300 User Manual Issue 1.4
Page 11 of 70
2 Description
2.1 Processor
The TVME8300 uses the Motorola MPC8245 Integrated Host PowerPC processor.
Please refer to the MPC8245 documentation for details.
2.2 Local
Memory
Bus
The TVME8300 provides the following devices on the MPC8245 local memory bus:
•
Socket Boot FLASH (1 Mbyte, 8 bit wide)
•
Board mounted Memory FLASH (8 Mbyte, 64 bit wide)
•
SDRAM memory (64 Mbyte, 64 bit wide)
•
NVRAM (8 Kbyte, 8 bit wide) / Real Time Clock / Watchdog (M48T59 compatible)
•
16550 compatible Dual-UART (8 bit wide)
•
Utility Registers (8 bit wide)
2.2.1 FLASH Memory
The TVME8300 provides two banks of FLASH memory:
•
Bank 0 consists of two 32-pin PLCC sockets each populated with a 512 K x 8 bit FLASH device
for a total of 1 Mbyte 8 bit wide Boot FLASH memory
•
Bank 1 consists of four 1 M x16 bit on board FLASH devices providing a total of 8 Mbyte 64 bit
wide Memory FLASH memory
2.2.2 SDRAM Memory
The TVME8300 provides 64 Mbyte 64 bit wide SDRAM memory build with four 8 M x 16 bit SDRAM
devices.
2.2.3 NVRAM / Real Time Clock
The TVME8300 uses a ST M48T59 compatible device to provide 8 Kbyte of non-volatile static RAM
and real time clock.
The M48T59 device consists of two parts:
•
A 28-pin 330mil SO device which contains the RTC, 8 Kbyte SRAM and sockets for the snaphat
battery
•
A snaphat battery that is placed on top of the device
Please refer to the M48T59 manual for details.
