Connectors

This section describes the connectors on the Emerald-MM-8Plus board.

PC/104 ISA Bus

Connectors J1 and J2 carry the ISA bus signal. Figure 1 shows the PC/104 A and B pin layout for J1, and the C and D pin layout for J2. These signals are not used to communicate with the CPU but are pass to other cards on the PC/104 stack.

Figure 1: PC/104 ISA Bus Connectors - J1, J2




J1 Connector Pinout J2 Connector Pinout
IOCHCHK- A1 B1 GND GND C0 D0 GND
SD7 A2 B2 RESETDRV SBHE- C1 D1 MEMCS16--
SD6 A3 B3 +5V LA23 C2 D2 IOCS16-
SD5 A4 B4 IRQ9 LA22 C3 D3 IRQ10
SD4 A5 B5 -5V LA21 C4 D4 IRQ11
SD3 A6 B6 DRQ2 LA20 C5 D5 IRQ12
SD2 A7 B7 -12V LA19 C6 D6 IRQ15
SD1 A8 B8 ENDXFR- LA18 C7 D7 IRQ14
SD0 A9 B9 +12V LA17 C8 D8 DACK0-
IOCHRDY A10 B10 keyed MEMR- C9 D9 DRQ0
AEN A11 B11 SMEMW- MEMW- C10 D10 DACK5-
SA19 A12 B12 SMEMR- SD8 C11 D11 DRQ5
SA18 A13 B13 IOW- SD9 C12 D12 DACK6-
SA17 A14 B14 IOR- SD10 C13 D13 DRQ6
SA16 A15 B15 DACK3- SD11 C14 D14 DACK7-
SA15 A16 B16 DRQ3 SD12 C15 D15 DRQ7
SA14 A17 B17 DACK1- SD13 C16 D16 +5
SA13 A18 B18 DRQ1 SD14 C17 D17 MASTER-
SA12 A19 B19 REFRESH- SD15 C18 D18 GND
SA11 A20 B20 SYSCLK keyed C19 D19 GND
SA10 A21 B21 IRQ7
SA9 A22 B22 IRQ6
SA8 A23 B23 IRQ5
SA7 A24 B24 IRQ4
SA6 A25 B25 IRQ3
SA5 A26 B26 DACK2-
SA4 A27 B27 TC
SA3 A28 B28 BALE
SA2 A29 B29 +5V
SA1 A30 B30 OSC
SA0 A31 B31 GND
GND A32 B32 GND

PC/104-Plus PCI Bus

The PC/104-Plus bus is essentially identical to the PCI Bus except for the physical design. A single pin and socket connector is specified for the bus signals. A 120-pin header, J3, arranged as four 30-pin rows incorporates a full 32-bit, 33MHz PCI Bus. The additional pins on the PC/104-Plus connectors are used as ground or key pins. The female sockets on the top of the board enable stacking another PC/104-Plus board on top of the Emerald-MM-8Plus board. The Emerald-MM-8Plus board should be the bottom board of a PC/104-Plus stackup.

In the connector J3 pinout table, below, the top corresponds to the left edge of the connector when the board is viewed from the primary side (the side with the female end of the PC/104-Plus connector), and the board is oriented so that the PC/104 connectors are along the bottom edge of the board and the PC/104-Plus connector is in the top of the Emerald-MM-8Plus board.

Figure 2: PC/104-Plus PCI Connector - J3




1 GND/5.0V KEY Reserved +5V AD00
2 VI/O AD02 AD01 +5V
3 AD05 GND AD04 AD03
4 C/BE0* AD07 GND AD06
5 GND AD09 AD08 GND
6 AD11 VI/O AD10 M66EN
7 AD14 AD13 GND AD12
8 +3.3V C/BE1* AD15 +3.3V
9 SERR* GND Reserved PAR
10 GND PERR* +3.3V Reserved
11 STOP* +3.3V LOCK* GND
12 +3.3V TRDY* GND DESEL*
13 FRAME* GND IRDY* +3.3V
14 GND AD16 +3.3V C/BE2*
15 AD18 +3.3V AD17 GND
16 AD21 AD20 GND AD19
17 +3.3V AD23 AD22 +3.3V
18 IDSEL0 GND IDSEL1 IDSEL2
19 AD24 C/BE3* VI/O IDSEL3
20 GND AD26 AD25 GND
21 AD29 +5V AD28 AD27
22 +5V AD30 GND AD31
23 REQ0* GND REQ1* VI/O
24 GND REQ2* +5V GNT0*
25 GNT1* VI/O GNT2* GND
26 +5V CLK0 GND CLK1
27 CLK2 +5V CLK3 GND
28 GND INTD* +5V RST*
29 +12V INTA* INTB* INTC*
30 -12V ~REQ3 ~GNT3 GND/3.3V KEY

On the Emerald-MM-8Plus, the octal UART is connected to the PCI bus and is powered by 5V with its PCI interface powered by the PCI bus VIO, which can be 3.3V or 5V. For this reason, the connector is not keyed (to prevent certain types of cards from being inserted).

I/O Header Connectors

Emerald-MM-8Plus provides two identical 40-pin headers labeled J4 and J5 for the serial ports. Four ports are contained on each header.

Figure 3: I/O Header Connectors - J4, J5




Connector, J4,is for ports 1-4 and is located along the right side of the board.

J4 Port No. Pin Assignment
PORT1 Pins 1 - 10
PORT2 Pins 11 - 20
PORT3 Pins 21 - 30
PORT4 Pins 31 - 40

Connector, J5, is for ports 5-8 and is located along the left side of the board.

J5 Port No. Pin Assignment
PORT5 Pins 1 - 10
PORT6 Pins 11 - 20
PORT7 Pins 21 - 30
PORT8 Pins 31 - 40

Pin numbers are marked on the board to assist with connector orientation.

Diamond Systems Corporation Cable Assembly Number C-DB9M-4 connects this header to four DE-9 Male connectors, for direct connection to RS-232-C signaling. The following tables list the signals for the appropriate mode of operation, as well as the DE-9 pin numbers to which these signals are wired.

RS-232 Pin Assignment

J5 - J4
Port1: DCD1 1 2 DSR1 Port5: DCD5 1 2 DSR5
RXD1 3 4 RTS1 RXD5 3 4 RTS5
TXD1 5 6 CTS1 TXD5 5 6 CTS5
DTR1 7 8 RI1 DTR5 7 8 RI5
GND 9 10 DIO0 GND 9 10 DIO4
Port2: DCD2 11 12 DSR2 Port6: DCD6 11 12 DSR6
RXD2 13 14 RTS2 RXD6 13 14 RTS6
TXD2 15 16 CTS2 TXD6 15 16 CTS6
DTR2 17 18 RI2 DTR6 17 18 RI6
GND 19 20 DIO1 GND 19 20 DIO5
Port3: DCD3 21 22 DSR3 Port7: DCD7 21 22 DSR7
RXD3 23 24 RTS3 RXD7 23 24 RTS7
TXD3 25 26 CTS3 TXD7 25 26 CTS7
DTR3 27 28 RI3 DTR7 27 28 RI7
GND 29 30 DIO2 GND 29 30 DIO6
Port4: DCD4 31 32 DSR4 Port8: DCD8 31 32 DSR8
RXD4 33 34 RTS4 RXD8 33 34 RTS8
TXD4 35 36 CTS4 TXD8 35 36 CTS8
DTR4 37 38 RI4 DTR8 37 38 RI8
GND 39 40 DIO3 GND 39 40 DIO7

Signal Definition DE-9 Pin Direction
DCDn Data Carrier Detect pin 1 Input
DSRn Data Set Ready pin 6 Input
RXDn Receive Data pin 2 Input
RTSn Request to Send pin 7 Output
TXDn Transmit Data pin 3 Output
CTSn Clear to Send pin 8 Input
DTRn Data Terminal Ready pin 4 Output
RIn Ring Indicator pin 9 Input
GND Ground pin 5 Signal Ground
DIOn Digital I/O - -

RS-485 Pin Assignment

J5 - J4
Port1: NC 1 2 NC Port5: NC 1 2 NC
TXD/RXD+1 3 4 TXD/RXD-1 TXD/RXD+5 3 4 TXD/RXD-5
NC 5 6 NC NC 5 6 NC
NC 7 8 NC NC 7 8 NC
GND 9 10 DIO0 GND 9 10 DIO4
Port2: NC 11 12 NC Port6: NC 11 12 NC
TXD/RXD+2 13 14 TXD/RXD-2 TXD/RXD+6 13 14 TXD/RXD-6
NC 15 16 NC NC 15 16 NC
NC 17 18 NC NC 17 18 NC
GND 19 20 DIO1 GND 19 20 DIO5
Port3: NC 21 22 NC Port7: NC 21 22 NC
TXD/RXD+3 23 24 TXD/RXD-3 TXD/RXD+7 23 24 TXD/RXD-7
NC 25 26 NC NC 25 26 NC
NC 27 28 NC NC 27 28 NC
GND 29 30 DIO2 GND 29 30 DIO6
Port4: NC 31 32 NC Port8: NC 31 32 NC
TXD/RXD+4 33 34 TXD/RXD-4 TXD/RXD+8 33 34 TXD/RXD-8
NC 35 36 NC NC 35 36 NC
NC 37 38 NC NC 37 38 NC
GND 39 40 DIO3 GND 39 40 DIO7

Signal Definition DE-9 Pin Direction
TXD/RXD+n Differential Transceiver Data (HIGH) pin 2 bi-directional
TXD/RXD-n Differential Transceiver Data (LOW) pin 7 bi-directional
GND Ground pin 5 Signal Ground
NC (not connected) - -
DIOn Digital I/O - -

RS-422 Pin Assignment

J5 - J4
Port1: NC 1 2 NC Port5: NC 1 2 NC
TXD+1 3 4 TXD-1 TXD+5 3 4 TXD-5
NC 5 6 RXD-1 NC 5 6 RXD-5
RXD+1 7 8 NC RXD+5 7 8 NC
GND 9 10 DIO0 GND 9 10 DIO4
Port2: NC 11 12 NC Port6: NC 11 12 NC
TXD+2 13 14 TXD-2 TXD+6 13 14 TXD-6
NC 15 16 RXD-2 NC 15 16 RXD-6
RXD+2 17 18 NC RXD+6 17 18 NC
GND 19 20 DIO1 GND 19 20 DIO5
Port3: NC 21 22 NC Port7: NC 21 22 NC
TXD+3 23 24 TXD-3 TXD+7 23 24 TXD-7
NC 25 26 RXD-3 NC 25 26 RXD-7
RXD+3 27 28 NC RXD+7 27 28 NC
GND 29 30 DIO2 GND 29 30 DIO6
Port4: NC 31 32 NC Port8: NC 31 32 NC
TXD+4 33 34 TXD-4 TXD+8 33 34 TXD-8
NC 35 36 RXD-4 NC 35 36 RXD-8
RXD+4 37 38 NC RXD+8 37 38 NC
GND 39 40 DIO3 GND 39 40 DIO7

Signal Definition DE-9 Pin Direction
TXD+n/TXD-n Differential transmit data pin 2/pin 7 Output (Separate lines)
RXD+n/RXD-n Differential receive data pin 4/pin 8 Input (Separate lines)
GND Ground pin 5 Signal Ground
NC (not connected) - -
DIOn Digital I/O - -

Digital I/O and Counter/timer Connector

Connector J15 is a 1x10, single-row, right-angle connector that provides the following digital I/O and counter/timer signals.

1 DIO7
2 DIO5
3 DIO3
4 DIO1
5 Counter/timer In
2 DIO 6
4 DIO 4
6 DIO 2
8 DIO 0/Counter/timer Out/LED Out
10 GND

Signal Definition
DIO 0-7 Digital I/O; programmable direction
Counter/timer In Counter/timer input
Counter/timer Out Counter/timer output
LED Out User-defined LED, typically for board status
GND Ground