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ENVOY II

SPECTRUM SIGNAL PROCESSING, INC.

ENVOY II

Card Type

Sound/Data (synchronous/asynchronous)/Fax

Maximum Data Rate

14.4Kbps

Maximum Fax Rate

9600bps

Data Bus

16-bit ISA

Chipset Controller

DSP Technology

Fax Class

Class I & II

I/O Options

Microphone in, speaker out

Data Modulation Protocol

Bell 103A/212A

ITU-T V.21, V.22, V.22bis, V.32, V.32bis

Fax Modulation Protocol

ITU-T V.21CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Purpose

Location

Purpose

Location

Microphone in

J1

Telephone line in

J3

Speaker out

J2

Telephone line out

J4

I/O BASE ADDRESS RANGE SELECION

Base I/O address

ISA I/O address

JB6/Pins 1 & 2

JB6/Pins 3 & 4

JB6/Pins 5 & 6

4E30h - 4E3Fh

230h - 23Fh

Closed

Closed

Open

 

130h - 13Fh

130h - 13Fh

Closed

Open

Closed

 

1B0h - 1BFh

1B0h - 1BFh

Open

Open

Closed

 

4EB0h - 4EBFh

2B0h - 2BFh

Open

Closed

Open

 

4F30h - 4F3Fh

330h - 33Fh

Closed

Open

Open

 

4FB0h - 4FBFh

3B0h - 3BFh

Open

Open

Open

DMA CHANNEL SELECTION

Channel

JB1

6

Pins 9 & 10, 11 & 12 closed

 

0

Pins 1 & 2, 3 & 4 closed

 

5

Pins 5 & 6, 7 & 8 closed

COMMUNICATION PORT CONFIGURATION

Port

IRQ

JB5

JB4

3

5

Pins 1 & 2, 5 & 6 closed

Pins 5 & 6 closed

 

4

2/9

*Pins 1 & 2, 3 & 4, 5 & 6

Pins 7 & 8 closed

 

2

3

Pins 1 & 2, 5 & 6 closed

Pins 3 & 4 closed

 

1

4

Pins 1 & 2 closed

Pins 1 & 2 closed

*Note: Pins designated are in the closed position.

DMA TRANSFER PER CYCLE SELECTION

Cycle

JB2

4 transfers

Closed

 

2 transfers

Open

DSP INTERRUPT SELECTION

IRQ

JB3

15

Pins 3 & 4 closed

 

10

Pins 1 & 2 closed

ISA CHANNEL READY DELAY CONFIGURATION

Setting

JB7

Not gated (Normal)

Pins 1 & 2 closed

 

Gated (Alternate)

Pins 2 & 3 closed