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Mercator PC/104-Plus LAN and DIO Module
PC/104-Plus Expansion Module with Ethernet and Digital I/O
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Description |
The Mercator PC/104 module integrates 2 PCI-based 10/100 Ethernet ports with 24 user-configurable digital I/O lines in the compact and rugged PC/104 format. This 2-in-1 combination of Ethernet and digital I/O can help lower the size and cost of your embedded system by eliminating one additional board from your PC/104 stack.
The Ethernet ports utilize the National Semiconductor DP83815 Mac + Phy PCI controller chip and are NE2000 compatible.
The 24 digital I/O lines are based on an 82C55 chip and feature programmable direction in 4- and 8-bit groups. All I/O lines contain user-configurable 10K ohm pull-up resistors for convenience.
Extended temperature capability (-40ºC to +85ºC) enables the board to operate in environments with extreme temperature swings, such as vehicles or outdoor installations. In addition, the board may be custom-configured with 0-ohm resistors in place of jumper blocks for increased ruggedness in high-vibration environments.
Diamond Systems offers appropriate mating cables for your convenience. Cable number C-PRZ-02 provides a panel-mountable RJ-45 connector for the Ethernet, and cable number C-26-18 is a 26-conductor ribbon cable for the digital I/O.
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Configuration Options |
Several features are configurable using either a dual-row 2mm size jumper block or a switch. Provision is made on the board for zero-ohm resistors to replace jumpers to enable a hard-wired configuration.
- Digital I/O base address (8 address options with 3 jumpers)
- Digital I/O configuration: pull-up enabled or disabled
- PCI slot selection for each Ethernet port
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I/O Headers |
Two connection options are provided for the Ethernet ports. To ensure proper operation, only one connection may be used for each Ethernet port.
Ethernet Pin Header
This pin header is a locking 1x6 position right-angle header. The pinout is compatible with Diamond systems cable number C-PRZ-02, which provides a panel-mountable RJ-45 jack.
| 1 |
Common |
| 2 |
RX- |
| 3 |
Common |
| 4 |
RX+ |
| 5 |
TX- |
| 6 |
TX+ |
Ethernet RJ-45 Jack
This connector is an industry-standard RJ-45 right-angle jack and may be used directly with standard CAT-5 Ethernet cabling.
| 1 |
TX+ |
| 2 |
TX- |
| 3 |
RX+ |
| 4 |
Common |
| 5 |
Common |
| 6 |
RX- |
| 7 |
Common |
| 8 |
Common |
Digital I/O
The digital I/O is provided on a 26-pin (2x13) pin header with the following pinout.
| C7 |
1 |
2 |
C6 |
| C5 |
3 |
4 |
C4 |
| C3 |
5 |
6 |
C2 |
| C1 |
7 |
8 |
C0 |
| B7 |
9 |
10 |
B6 |
| B5 |
11 |
12 |
B4 |
| B3 |
13 |
14 |
B2 |
| B1 |
15 |
16 |
B0 |
| A7 |
17 |
18 |
A6 |
| A5 |
19 |
20 |
A4 |
| A3 |
21 |
22 |
A2 |
| A1 |
23 |
24 |
A0 |
| +5V |
25 |
26 |
Ground |
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Digital I/O Configuration |
The following I/O addresses are selected with jumpers or 0-ohm resistors. All addresses are in hex.
| A |
B |
C |
Address |
| In |
In |
In |
200-203 |
| Out |
In |
In |
240-243 |
| In |
Out |
In |
280-283 |
| Out |
Out |
In |
2C0-2C3 |
| In |
In |
Out |
300-303 |
| Out |
In |
Out |
340-343 |
| In |
Out |
Out |
380-383 |
| Out |
Out |
Out |
3C0-3C3 |
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Specifications |
| Ethernet |
| No. of Ethernet controllers |
2 |
| Protocol |
IEEE 802.3 10Base-T and 100Base-TX compatible |
| Maximum data rate |
100Mbps |
| Digital I/O |
| No. of I/O lines |
24 |
| Direction |
Programmable: Ports A and B individually programmable for all input or all output.
Port C programmable in 4-bit groups for input or output |
| Input voltage |
Low: -0.5V min, 0.8V max
High: 2.0V min, 5.5V max |
| Output voltage |
Low 0.0V min, 0.4V max
High 3.0V min, Vcc - 0.4V max |
| Output current |
2.5mA max, each line |
| Pull-up resistors |
10KΩ pull-up |
| General |
| I/O headers |
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| Ethernet ports |
RJ-45 female sockets and 6-pin straight male headers |
| Digital I/O |
26-pin (2x13) .025" square pin header on .1" centers |
| Mating cables |
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| Ethernet ports |
RJ-45 sockets: Standard CAT5 cable
Pin headers: Diamond Systems cable number C-PRZ-02 |
| Digital I/O |
Diamond Systems cable number C-26-18 |
| Dimensions |
3.55" x 3.775" (PC/104 standard) |
| Power supply |
+5VDC 10% |
| Operating temperature |
-40ºC to +85ºC |
| Operating humidity |
5% to 95% noncondensing |
| PC/104 bus |
Both PC/104 and PC/104-Plus stackthrough headers installed |
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Get an online quote |
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Mercator PC/104-Plus LAN and DIO Module |
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| Dual Port 10/100Mbps Ethernet + 24 Digital I/O PC/104-Plus Module |
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Cables and accessories |
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| Dual 26-pin connectors, 18 inches |
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