DSM2190F4 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

DSM2190F4

DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-2191 DSPs (3.3V Supply)

STMicroelectronics 

DSM2190F4

SPECIFYING THE MEMORY MAP WITH PSDSOFT EXPRESSTM

The memory map shown in Figure 7 can be easily

implemented using PSDsoft ExpressTM in a point-

and-click environment. PSDsoft ExpressTM will

generate Hardware Definition Language (HDL)

statements of the ABEL language. Figure 8 shows

the resulting equations generated by PSDsoft Ex-

pressTM.

Figure 8. HDL Statements Generated from PSDsoft Express to Implement Memory Map

csiop = ((address >= ^h2000) & (address <= ^h20FF) & (!_ioms));

fs0 = ((address >= ^h10000) & (address <= ^h17FFF) & (!_bms));

fs1 = ((address >= ^h18000) & (address <= ^h1FFFF) & (!_bms));

fs2 = ((address >= ^h20000) & (address <= ^h27FFF) & (!_bms));

fs3 = ((address >= ^h28000) & (address <= ^h2FFFF) & (!_bms));

fs4 = ((address >= ^h30000) & (address <= ^h37FFF) & (!_bms));

fs5 = ((address >= ^h38000) & (address <= ^h3FFFF) & (!_bms));

fs6 = ((address >= ^h40000) & (address <= ^h47FFF) & (!_bms));

fs7 = ((address >= ^h48000) & (address <= ^h4FFFF) & (!_bms));

csboot0 = ((address >= ^h50000) & (address <= ^h51FFF) & (!_bms));

csboot1 = ((address >= ^h52000) & (address <= ^h53FFF) & (!_bms));

csboot2 = ((address >= ^h54000) & (address <= ^h55FFF) & (!_bms));

csboot3 = ((address >= ^h56000) & (address <= ^h57FFF) & (!_bms));

Specifying these equations using PSDsoft Ex-

pressTM is very simple. Figure 9 shows how to

specify the equation for the 32K Byte Flash mem-

ory segment, fs2. Notice fs2 is qualified with the

signals BMS. This specification process is repeat-

ed for all other Flash memory segments, the csiop

register block, and any external chip select signals

that may be needed (ADC, etc.).

Figure 9. PSDsoft ExpressTM Memory Mapping

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