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6 write buffer, 7 read buffer, Write buffer -7 – Intel STRONGARM SA-1100 User Manual

Page 27: Read buffer -7

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SA-1100 Developer’s Manual

1-7

Introduction

1.4.6

Write Buffer

The SA-1100 has an eight-entry write buffer with each entry able to contain 1 to 16 bytes. A drain
write buffer operation is supported.

1.4.7

Read Buffer

The SA-1100 has a four-entry read buffer capable of loading 1, 4, or 8 words of data per entry. This
facility permits software to preload data into the buffer for use at a later time without blocking the
operation of the processor. Software can flush either a single entry or the entire buffer (four
entries). The read buffer is controlled through system control coprocessor 15 and can be enabled
for use in user mode.