EasyManuals Logo

Motorola MTX series Programmer's Reference Guide

Motorola MTX series
223 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #149 background imageLoading...
Page #149 background image
3-18 Computer Group Literature Center Web Site
Falcon ECC Memory Controller Chip Set
3
Notes
1. No opportunity for error since no read of DRAM occurs during a
four-beat write.
2. The recommended connection for Falcon is for WE* to connect
from upper Falcon to both upper and lower DRAM’s of banks A and
B and for WE* of lower Falcon to connect to both upper and lower
DRAM’s of banks C and D. With this configuration, the write
portion of single-bit-writes and of scrubs does happen if the double-
bit error is in the lower portion of banks A or B or if it is in the upper
portion of banks C or D
Error Logging
ECC error logging is facilitated by the Falcon because of its internal
latches. When an error (single- or double-bit) occurs in the DRAMs to
which a Falcon is connected, it records the address and syndrome bits
associated with the data in error. Each Falcon performs this logging
function independently of the other. Once a Falcon has logged an error, it
does not log any more until the elog control /status bit has been cleared by
software unless the currently logged error is single-bit and a new, double-
bit error is encountered. The logging of errors that occur during scrub can
be enabled/disabled in software. Refer to the Error Logger Register
section for more information.
ROM/Flash Interface
The Falcon pair provides the interface for two blocks of ROM/Flash. Each
block provides addressing and control for up to 64MB.
Note No ECC error checking is provided for the ROM/Flash.
The ROM/Flash interface allows each block to be individually configured
by jumpers and/or by software as follows:
1. Access for each block is controlled by three software programmable
control register bits: an overall enable, a write enable, and a reset

Table of Contents

Other manuals for Motorola MTX series

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Motorola MTX series and is the answer not in the manual?

Motorola MTX series Specifications

General IconGeneral
BrandMotorola
ModelMTX series
CategoryPortable Radio
LanguageEnglish

Related product manuals