Functional description
UM1499
Doc ID 022592 Rev 1
2 Functional
description
The following figure shows the block diagram of the EVALSP320SCPU board.
Figure 2.
EVALSP320SCPU board block diagram
2.1
Dynamic memory subsystem
The Dynamic memory subsystem comprises three major parts:
Memory chip
The SPEAr320S MPU supports up to 256 Mbytes of memory. Place and route is provided
for 2 chips but only one has been populated. The memory used is a Micron DDR2 device, its
part number is MT47H64M16HR-3 and its size is 128 Mbits x 8 (16 Mbits x 8 x 8 banks).
Local power supply
The local power supply is based on a monolithic voltage regulator for the chip set and
DDR2/3 (PM6641). It is generated locally in order to minimize the layout impact and also to
avoid any noise injection between different subsystems.
Exp
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Device
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