NS32FX164AV-25 National Semiconductor, NS32FX164AV-25 Datasheet - Page 66

• Manufacturer Part Number: NS32FX164AV-25
• Description: IC IMAGING COMM SGNL PROC PLCC68
• Manufacturer: National Semiconductor

Specifications of NS32FX164AV-25

• Processor Type: Advanced Imaging/Communications Signal Processor SIAP™
• Speed: 50MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Other names: *NS32FX164AV-25; Q1284286

3 0 Functional Description
Note CPU samples Data Bus here
The CPU does not pulse the Address Strobe (ADS) and no
bus signals are generated The direction of a transfer is de-
termined by the sequence (‘‘protocol’’) established by the
instruction under execution but the CPU indicates the direc-
tion on the DDIN pin for hardware debugging purposes
A Slave Processor operand is transferred in one or more
Slave bus cycles A Byte operand is transferred on the
least-significant byte of the Data Bus (AD0–AD7) and a
FIGURE 3-25 Slave Processor Read Cycle
(Continued)
66
Figure 3-27 shows the NS32FX164 and FPU connection di-
Word operand is transferred on the entire bus A Double
Word is transferred in a consecutive pair of bus cycles
least-significant word first A Quad Word is transferred in
two pairs of Slave cycles with other bus cycles possibly
occurring between them The word order is from least-signif-
icant word to most-significant
agram
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