Appendix B: Connector Pinouts

PDQ Board connectors
Docking panel connectors
- H2: Power header
- Communications connectors
Wildcard headers H3, H7

The PDQ Board Starter Kit comprises a stack of two boards: the Docking Panel and the PDQ Board Single Board Computer (SBC). Pin-outs for all input-output (IO) connectors on the PDQ Board and the PowerDock are provided here. You may find PDQ Board physical dimensions here.

PDQ Board connectors

The pinouts of all of the connectors on the PDQ Board are presented below. To locate the connectors on the board, consult Figure B-1 and the white silk–screened labels on the PDQ Board. The arrows in the figure point to the locations of pin 1 on each connector. The large chip on the right side of the board is the Freescale 9S12 (HCS12) microcontroller.

Figure B-1 Headers and Jumpers on the PDQ Board.

For more info

For more complete information about the PDQ headers listed on this page, please see Getting to Know Your Hardware. Other pages in this PDQ Board Users Guide provide information on how to code C-language instrument control applications using the board.

Jumpers

Jumper	Label	Description
J1	Clean	Puts the PDQ Board into special cleanup mode on the next power-up or reset. To return the PDQ Board to its pristine, right-from-the-factory condition, install this jumper, press the Reset Button, and then remove the jumper.
J2	SPI #2	If installed, configures the board as the bus slave on SPI1, bus master on SPI2. Normally the board is bus master on SPI1 and bus slave on SPI2.
J3	NoBoot	If installed, disables the processing of Boot Vectors. Typically not installed.
J4	1 485En	If installed, enables RS485, disables RS232 on the Serial1 port
J5	1 Term	If installed with J4, provides RC termination for the RS-485 communications link on Serial 1 by connecting a 120 Ohm resistor in series with a 0.1 micro-Farad capacitor across the RS485 line.
J6	1 RTrm	If installed with J4 and J5, shorts out the capacitive termination on RS485-1 serial port, resulting in purely Resistive termination.
J7	2 485En	If installed, enables RS485, disables RS232 on the Serial2 port
J8	2 Term	If installed with J7, provides RC termination for the RS-485 communications link on Serial 2 by connecting a 120 Ohm resistor in series with a 0.1 micro-Farad capacitor across the RS485-2 line.
J9	2 RTrm	If installed with J7 and J8, shorts out the capacitive termination on RS485-2 serial port, leaving the Resistive termination intact.

Power header

H1: Power Header
Pin	Signal
1 —	V+RAW (+8 to +26 VDC)
2 —	GND
3 —	+5 VDC
4 —	TDI for JTAG programming
5 —	TMS for JTAG programming
6 —	TCK for JTAG programming
7 —	TDO for JTAG programming
Note: V+RAW is needed only if certain Wildcards are used. Pins 4-7 are generally not used. They are used only for Mosaic factory programming of an onboard CPLD.

Communications header hosts Serial1 and Serial2 ports

H2: Communications Header
Signal	Pins		Signal
/TxD1	—1	2—	/RxD1
DGND	—3	4—	RS485 XCV2+
RS485 XCV1-	—5	6—	RS485 XCV1+
/TxD2	—7	8—	/RxD2
DGND	—9	10—	RS485 XCV2-

H5: Docking Panel Comm Header
Signal	Pins		Signal
/TxD1	—1	2—	/RxD1
DGND	—3	4—	/MOD1_CS/NC
RS485 XCV1-	—5	6—	RS485 XCV1+
/TxD2	—7	8—	/RxD2
DGND	—9	10—	VBAT
Note: This pinout matches the comm socket of the Docking Panel itself, but differs from the comm header (right-angle pins) on the Docking Panel: on the Docking Panel comm header pin 4 is connected to DGND and pin 10 is connected to +5V. Note: This header is actually labeled "PowerDock Hdr"

SPI header hosts SPI1 and SPI2 ports

H9: SPI Header
Signal	Pins		Signal
/SS1	—1	2—	/SS2
SCK1	—3	4—	SCK2
MOSI1	—5	6—	MOSI2
MISO1	—7	8—	MISO2
DGND	—9	10—	/XIRQ

Digital field header

H8: Digital Field Header
Signal	Pins		Signal
GND	—1	2—	+5V
PM5	—3	4—	PM4
PM3	—5	6—	PM2
PM1	—7	8—	PM0
PP7	—9	10—	PP6
PP5	—11	12—	PP4
PP3	—13	14—	PP2
PP1	—15	16—	PP0
(TxD4) PT7	—17	18—	PT6 (RxD4)
(TxD3) PT5	—19	20—	PT4 (RxD3)
PT3	—21	22—	PT2
PT1	—23	24—	PT0
For logic-level serial ports 3 and 4, see the Software UART library.

Analog field header

H4: Analog Field Header
Signal	Pins		Signal
AGND	—1	2—	+5VAN
GND	—3	4—	V+RAW
(PJ7) SCL	—5	6—	SDA (PJ6)
PM7	—7	8—	PM6
AN15	—9	10—	AN14
AN13	—11	12—	AN12
AN11	—13	14—	AN10
AN9	—15	16—	AN8
AN7	—17	18—	AN6
AN5	—19	20—	AN4
AN3	—21	22—	AN2
AN1	—23	24—	AN0

Wildcard I/O expansion interface

H3 & H7: Wildcard Port0 & Port1 Headers
Signal	Pins		Signal
GND	—1	2—	+5V
/IRQ	—3	4—	V+RAW
SEL1/XMIT-	—5	6—	SEL0/XMIT+
MOSI/XCV-	—7	8—	MISO/XCV+
/RESET	—9	10—	SCK
/MOD.CS	—11	12—	16MHz
E	—13	14—	R/W
/OE	—15	16—	/WE
AD7	—17	18—	AD6
AD5	—19	20—	AD4
AD3	—21	22—	AD2
AD1	—23	24—	AD0

BDM header

H6: BDM Header
Signal	Pins		Signal
BGND	—1	2—	GND
NC	—3	4—	/RESET
NC	—5	6—	+5

Docking panel connectors

The pin-outs of all of the connectors on the Docking Panel are presented below. To locate the connectors on the board, consult Figure B-2 and the white silk–screened labels on the PowerDock.

For more complete information about the Docking Panel headers listed on this page, please see Using Your Docking Panel.

Figure B-2 Headers on the Docking Panel. The small numeral 1 locates pin 1 on each header.

Figure B-3 Serial Connectors, DB-25 Connectors, Power Jack, and Power Switch on the Back of the Docking Panel.

H2: Power header

The following table provides the power header’s pinout:

Power Header
Pin		Signal
1	–	VIN (8 to 26 Volts)
2	–	GND
3	–	+5 VDC
4	–	VBAT

Communications connectors

Standard DB-9 serial connector configurations

DB-9 Connector 1
Signal	Pins		Signal
DCD1/DSR1/DTR1	—1
		6—	DSR1/DTR1/DCD1
/TXD1	—2
		7—	STS1
/RXD1	—3
		8—	RTS1
DSR1/DTR1/DCD1	—4
		9—	NC
DGND	—5
Note: NC indicates no connection, pins 1, 4 & 6 (DCD1/DSR1/DTR1) are connected, pins 7 & 8 (CTS1/RTS1) are connected

DB-9 Connector 2
Signal	Pins		Signal
DCD2	—1
		6—	DSR2/DTR2/DCD2
/TXD2	—2
		7—	STS2/RTS2
/RXD2	—3
		8—	RTS2/CTS2
DSR2/DTR2/DCD2	—4
		9—	NC
DGND	—5
Note: NC indicates no connection, pins 1, 4 & 6 (DCD2/DSR2/DTR2) are connected, pins 7 & 8 (CTS2/RTS2) are connected

Standard DB-25 IO headers

DB-25 Connector 1
H8 DB-25 Pin	H10 Mirror Pin
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	11
12	12
13	13
14	14
15	15
16	16
17	17
18	18
19	19
20	20
21	21
22	22
23	23
24	24
25 - GND	(none)

DB-25 Connector 2
H9 DB-25 Pin	H11 Mirror Pin
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	11
12	12
13	13
14	14
15	15
16	16
17	17
18	18
19	19
20	20
21	21
22	22
23	23
24	24
25 - GND	(none)

Communications header

Docking Panel Communications Header H1
Signal	Pins		Signal
/TxD1	—1	2—	/RxD1
GND	—3	4—	GND
RS485 XCVR-	—5	6—	RS485 XCVR+
/TxD2	—7	8—	/RxD2
GND	—9	10—	+5V
Note: This pinout differs from that of the PDQ Board pinout; on the PDQ Board pin 4 is connected to XCV2+ and pin 10 is connected to XCV2-.

Wildcard headers H3, H7

Wildcard Port Header
Signal	Pins		Signal
GND	—1	2—	+5V
/IRQ	—3	4—	V+RAW
SEL1/XMIT-	—5	6—	SEL0/XMIT+
MOSI/XCV-	—7	8—	MISO/XCV+
/RESET	—9	10—	SCK
/MOD.CS	—11	12—	16MHz
E	—13	14—	R/W
/OE	—15	16—	/WE
AD7	—17	18—	AD6
AD5	—19	20—	AD4
AD3	—21	22—	AD2
AD1	—23	24—	AD0

This page is about: Descriptions of Power Header, Communications Header, Digital and Analog Field Headers, Wildcard IO Expansion Headers, Docking Panel Connectors, SPI Header, BDM Header – The PDQ Board Starter Kit comprises a stack of two boards: the Docking Panel and the PDQ Board Single Board Computer (SBC). Pin-outs for all input-output connectors on the PDQ Board and the PowerDock are provided here.