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Brooktrout TR112 ISA Fax Board
Please Note: This is a reconditioned, limited-inventory product. If you are interested or would like more information, please call us directly at 978-452-2299 or email at bobr@bomara.com.
Card Type
| Fax/Telephony/T1 DSU |
Processor
| Z8 |
Processor Speed
| 12MHz |
Chipset
| Unidentified |
T1 Transfer Rate
| 1.544Mbps x 2 |
Maximum Onboard Memory
| 32K |
I/O Options
| Telephone (2) |
Data Bus
| 8/16-bit ISA |
Line Type
| Loop-start, DID, T1 |
| CONNECTIONS |
Function |
Label |
| Telephone line 1 |
CN1 |
| Telephone line 2 |
CN2 |
| External LEDs (see pinout below) |
J3 |
| J3 PINOUT |
Function |
Pin |
| Not used |
1 |
| Channel 1 off hook |
2 |
| Channel 1 status |
3 |
| Channel 2 off hook |
4 |
| Channel 2 status |
5 |
| +5V DC power for LEDs |
6 |
| USER CONFIGURABLE SETTINGS |
Setting |
Label |
Position |
| DRQ pull-down resistor enabled (default) |
SW1/1 |
On |
| DRQ pull-down resistor disabled |
SW1/1 |
Off |
| Note: If multiple TR112 cards are installed in a system, SW1/1 should be turned on for only one of them. |
| DMA CHANNEL |
Setting |
J31/A |
J31/B |
J31/C |
J31/D |
J31/E |
J31/F |
| DMA1 |
Closed |
Open |
Open |
Closed |
Open |
Open |
| DMA2 |
Open |
Closed |
Open |
Open |
Closed |
Open |
| DMA3 |
Open |
Open |
Closed |
Open |
Open |
Closed |
| BASE I/O ADDRESS |
Setting |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
SW1/6 |
SW1/7 |
SW1/8 |
| 000h |
On |
On |
On |
On |
On |
On |
On |
| 008h |
Off |
On |
On |
On |
On |
On |
On |
| 010h |
On |
Off |
On |
On |
On |
On |
On |
| 018h |
Off |
Off |
On |
On |
On |
On |
On |
| 020h |
On |
On |
Off |
On |
On |
On |
On |
| 250h (default) |
On |
Off |
On |
Off |
On |
On |
Off |
| 3D8h |
Off |
Off |
On |
Off |
Off |
Off |
Off |
| 3E0h |
On |
On |
Off |
Off |
Off |
Off |
Off |
| 3E8h |
Off |
On |
Off |
Off |
Off |
Off |
Off |
| 3F0h |
On |
Off |
Off |
Off |
Off |
Off |
Off |
| 3F8h |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
| Note: A total of 127 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the most significant bit and switch SW1/2 is the least significant bit. The switches have the following decimal values: SW1/8=512, SW1/7=256, SW1/6=128, SW1/5=64, SW1/4=32, SW1/3=16, SW1/2=8. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0) |
| INTERRUPT |
Setting |
J32/A |
J32/B |
J32/C |
J32/D |
J32/E |
J32/F |
| IRQ2 |
Open |
Open |
Open |
Open |
Open |
Closed |
| IRQ3 |
Open |
Open |
Open |
Open |
Closed |
Open |
| IRQ4 |
Open |
Open |
Open |
Closed |
Open |
Open |
| IRQ5 |
Open |
Open |
Closed |
Open |
Open |
Open |
| IRQ6 |
Open |
Closed |
Open |
Open |
Open |
Open |
| IRQ7 |
Closed |
Open |
Open |
Open |
Open |
Open |
| IRQ10 |
Open |
Open |
Open |
Open |
Open |
Open |
| IRQ11 |
Open |
Open |
Open |
Open |
Open |
Open |
| IRQ12 |
Open |
Open |
Open |
Open |
Open |
Open |
| IRQ14 |
Open |
Open |
Open |
Open |
Open |
Open |
| IRQ15 |
Open |
Open |
Open |
Open |
Open |
Open |
| INTERRUPT (CONT'D) |
Setting |
J33 pins 1 & 2 |
J33 pins 3 & 4 |
J33 pins 5 & 6 |
J33 pins 7 & 8 |
J33 pins 9 & 10 |
| IRQ2 |
Open |
Open |
Open |
Open |
Open |
| IRQ3 |
Open |
Open |
Open |
Open |
Open |
| IRQ4 |
Open |
Open |
Open |
Open |
Open |
| IRQ5 |
Open |
Open |
Open |
Open |
Open |
| IRQ6 |
Open |
Open |
Open |
Open |
Open |
| IRQ7 |
Open |
Open |
Open |
Open |
Open |
| IRQ10 |
Open |
Open |
Open |
Open |
Closed |
| IRQ11 |
Open |
Open |
Open |
Closed |
Open |
| IRQ12 |
Open |
Open |
Closed |
Open |
Open |
| IRQ14 |
Open |
Closed |
Open |
Open |
Open |
| IRQ15 |
Closed |
Open |
Open |
Open |
Open |
| DIAGNOSTIC LEDs |
| LED |
Color |
Status |
Condition |
| LED1 |
Green |
On |
Line 1 is active |
| LED1 |
Green |
Off |
Line 1 is not active |
| LED2 |
Red |
On |
Line 1 is off-hook |
| LED2 |
Red |
Off |
Line 1 is on-hook |
| LED3 |
Green |
On |
Line 2 is active |
| LED3 |
Green |
Off |
Line 2 is not active |
| LED4 |
Red |
On |
Line 2 is off-hook |
| LED4 |
Red |
Off |
Line 2 is on-hook |
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