ADSP-2141LKS-N1 데이터 시트보기 (PDF) - Analog Devices

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ADSP-2141LKS-N1

Safe Net® DSP

Analog Devices 

ADSP-2141L

PIN FUNCTIONS

I/O Descriptions

This section describes the physical I/O hardware on the ADSP-2141L.

Pin Name

# of

Pins

External Memory Bus

Address [25:0]

26

Data [31:0]

32

Interrupts

IRQ2

1

IRQL0

1

IRQL1

1

IRQE

1

Bus Signals

BR

1

BG

1

BGH

1

PMS

1

DMSL

1

DMSH

1

BMS

1

IOMS

1

CMS

1

RD

1

WR

1

Miscellaneous

MMAP

1

BMODE

1

CLKIN, XTAL

2

CLKOUT

1

Serial Ports

SPORT0

SCLK0

1

DR0

1

RFS0

1

DT0

1

TFS0

1

SPORT1

Port Configuration

(System Control Reg) –>

SCLK1

1

DR1

1

RFS1

1

DT1

1

TFS1

1

Power-Down

PWD

1

PWDACK

1

PIN FUNCTION DESCRIPTIONS–I/O Hardware

Input/

Output Function

O

Address Output Pins for Program, Data, Byte and I/O Spaces (13 Bits 2183, 13 Bits

from Overlay Register) Note: A0 not used for 32-bit memory.

I/O

Data I/O Pins for Program and Data Memory Spaces

D31:0 are used for wide-bus data memory.

D23:0 are used for DSP Program RAM.

D23:8 are used for I/O Space.

D23:8 are used for DSP Data RAM.

D15:8 are used for byte memory.

D23:16 are also used as Byte Space Addresses

I

Edge- or Level-Sensitive Interrupt Request

I

Level-Sensitive Interrupt Requests

I

Level-Sensitive Interrupt Requests

I

Edge-Sensitive Interrupt Request

I

Bus Request Input

O

Bus Grant Output

O

Bus Grant Hung Output

O

Program Memory Select Output

O

Data Memory Select Output (Lower 16 Bits for 32-Bit DM)

O

Upper Memory Select Output (Upper 16 Bits for 32-Bit DM, Not Used for 16-Bit DM)

O

Byte Memory Select Output

O

I/O Space Memory Select Output

O

Combined Memory Select Output (PMS, DMS*, IOMS, BMS)

O

Memory Read Enable Output

O

Memory Write Enable Output

I

Memory Map Select Input (1 = Overlay External at 0x0000)

I

Boot Option Control Input (0 = BDMA, 1 = IDMA)

I

Clock or Quartz Crystal Input (1/2 of the ADSP-2141 Clock)

O

Processor Clock Output

I/O

Serial Port 0 Clock

I

Serial Port 0 Receive Data Input

I/O

Serial Port 0 Receive Frame Sync

O

Serial Port 0 Transmit Data Output

I/O

Serial Port 0 Transmit Frame Sync

1 = Serial Port

I/O

Serial Port 1

I

Serial Port 1 Receive Data Input

I/O

Serial Port 1 Receive Frame Sync

O

Serial Port 1 Transmit Data Output

I/O

Serial Port 1 Transmit Frame Sync

I

Power-Down Initiate Control

O

Power-Down Acknowledge

0 = Other

Clock

Flag In

IRQ0

Flag Out

IRQ1

REV. 0

–9–

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