AN1386 STMicroelectronics, AN1386 Datasheet - Page 6

• Manufacturer Part Number: AN1386
• Description: USING THE DSM2180F3 WITH THE ANALOG DEVICES ADSP-2185
• Manufacturer: STMicroelectronics

AN1386 - APPLICATION NOTE
ADSP-218X to DSM2180F3 Schematic
Figure 3 shows an example schematic diagram for an ADSP-218x to DSM2180F3 design. While Table 1
shows the required connections for every design, the schematic shows additional signals and functions
that would be typical of many designs. Specifically, the following signals have been added:
Table 2. ADSP-2185 / DSM2180F3 Optional Signals Used
Note: The schematic also shows basic ADSP-218x connections, such as the system reset input and the DSM2180F3 shows additional op-
DEFINE THE ADSP-2185 INTERFACE IN PSDSOFT EXPRESS
Highlights of design entry will be given here. Please refer to the PSDsoft Express User Manual for a thor-
ough coverage of all the features of PSDsoft Express. This section is meant to show you just the essentials
to get you going. Here are the steps when using a template:
Invoke PSDsoft Express and Open a New Project
The associated dialog box is shown graphically in Figure 4.
MCU/DSP and PSD Selection
When you click OK in the “New Project” window, the “MCU and PSD Selection” screen appears. When
you see this screen, make the following selections:
6/17
ADSP-2185 Pin
Start PSDsoft Express.
Create a new project.
Select your project folder and name the project (in this example, name the project “DSM2180” in the
folder PSDsoft\my_project).
Select Analog Devices for the manufacturer and ADSP 218x for the type
The control signals are selected for you.
Select the DSM2180 for the Family, the DSM2180F3 for the part and the K package.
The MCU/DSP parameters are set for you. Click OK.
Functions
PWDACK
tional connections, such as I/O and JTAG.
/IOMS
/DSM
D18
D19
N/A
PD0
PD1
PC2
PC7
PD2/_CSI
PB2
DSM2180F3 Pin Functions
Chip Select for external device, such as
Power down chip select signal
Data Memory Select signal
I/O Memory Select signal
Pin Description
LCD, UART, etc.
Address bit 16
Address bit 17