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ADSP-2184L

DSP Microcomputer

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ADSP-2184L/ADSP-2185L/ADSP-2186L/ADSP-2187L

Table 12. Unused Pin Terminations (Continued)

Pin Name1

I/O

3-State (Z)2

Reset

State

High-Z3 Caused By

Unused Configuration

SCLK1

I/O

I

Input = High or Low, Output = Float

RFS1/IRQ0

I/O

I

High or Low

DR1/FI

I

I

High or Low

TFS1/IRQ1

I/O

I

High or Low

DT1/FO

O

O

Float

EE

I

I

Float

EBR

I

I

Float

EBG

O

O

Float

ERESET

I

I

Float

EMS

O

O

Float

EINT

I

I

Float

ECLK

I

I

Float

ELIN

I

I

Float

ELOUT

O

O

Float

1 CLKIN, RESET, and PF3–0/Mode D–A are not included in this table because these pins must be used.

2 All bidirectional pins have three-stated outputs. When the pin is configured as an output, the output is High-Z (high impedance) when inactive.

3 High-Z = high impedance.

4 If the CLKOUT pin is not used, turn it OFF, using CLKODIS in SPORT0 autobuffer control register.

5 If the Interrupt/Programmable Flag pins are not used, there are two options: Option 1: When these pins are configured as INPUTS at reset and function as interrupts and

input flag pins, pull the pins High (inactive). Option 2: Program the unused pins as OUTPUTS, set them to 1 prior to enabling interrupts, and let pins float.

Rev. C | Page 20 of 48 | January 2008

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