ADSP-2188MKCA-300 データシートの表示（PDF） - Analog Devices

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ADSP-2188MKCA-300

DSP Microcomputer

Analog Devices 

ADSP-2188M

Terminating Unused Pins

The following table shows the recommendations for terminating unused pins.

Pin Terminations

Pin Name

I/O 3-State

(Z)

Reset

State

Hi-Z*

Caused By

Unused Configuration

XTAL

CLKOUT

A13:1 or

IAD 12:0

A0

D23:8

D7 or

IWR

D6 or

IRD

D5 or

IAL

D4 or

IS

D3 or

IACK

D2:0 or

IAD15:13

PMS

DMS

BMS

IOMS

CMS

RD

WR

BR

BG

BGH

IRQ2/PF7

IRQL1/PF6

IRQL0/PF5

IRQE/PF4

SCLK0

RFS0

DR0

TFS0

DT0

SCLK1

RFS1/IRQ0

DR1/FI

TFS1/IRQ1

DT1/FO

EE

EBR

EBG

ERESET

EMS

EINT

ECLK

ELIN

ELOUT

I

O

O (Z)

I/O (Z)

O (Z)

I/O (Z)

I/O (Z)

I

I/O (Z)

I

I/O (Z)

I

I/O (Z)

I

I/O (Z)

I/O (Z)

I/O (Z)

O (Z)

O (Z)

O (Z)

O (Z)

O (Z)

O (Z)

O (Z)

I

O (Z)

O

I/O (Z)

I/O (Z)

I/O (Z)

I/O (Z)

I/O

I/O

I

I/O

O

I/O

I/O

I

I/O

O

I

I

O

I

O

I

I

I

O

I

O

Hi-Z

Hi-Z

Hi-Z

Hi-Z

Hi-Z

I

Hi-Z

I

Hi-Z

I

Hi-Z

I

Hi-Z

Hi-Z

Hi-Z

O

O

O

O

O

O

O

I

O

O

I

I

I

I

I

I

I

I

O

I

I

I

I

O

I

I

O

I

O

I

I

I

O

BR, EBR

IS

BR, EBR

BR, EBR

BR, EBR

BR, EBR

BR, EBR

BR, EBR

BR, EBR

BR, EBR

IS

BR, EBR

BR, EBR

BR, EBR

BR, EBR

BR, EBR

BR, EBR

BR, EBR

EE

Float

Float

Float

Float

Float

Float

Float

High (Inactive)

Float

High (Inactive)

Float

Low (Inactive)

Float

High (Inactive)

Float

Float

Float

Float

Float

Float

Float

Float

Float

Float

Float

High (Inactive)

Float

Float

Input = High (Inactive) or Program as Output, Set to 1, Let Float

Input = High (Inactive) or Program as Output, Set to 1, Let Float

Input = High (Inactive) or Program as Output, Set to 1, Let Float

Input = High (Inactive) or Program as Output, Set to 1, Let Float

Input = High or Low, Output = Float

High or Low

High or Low

High or Low

Float

Input = High or Low, Output = Float

High or Low

High or Low

High or Low

Float

Float

Float

Float

Float

Float

Float

Float

Float

Float

NOTES

*Hi-Z = High Impedance.

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

2. 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 inter-

rupts 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.

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

4. CLKIN, RESET, and PF3:0/MODE D:A are not included in the table because these pins must be used.

–8–

REV. 0

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