Receiver pinout information
Applicable receivers: BD940 | BD940-INS
BD940 80-pin connector pinout
|
Pin |
Signal name |
Description |
Integration notes |
|---|---|---|---|
|
1 |
VCC Input DC Card power |
VCC Input DC Card power (3.3 V only) |
VCC Input DC Card power (3.3 V only) |
|
2 |
VCC Input DC Card power |
VCC Input DC Card power (3.3 V only) |
VCC Input DC Card power (3.3 V only) |
|
3 |
ANTENNA_POWER |
VCC Input DC Card power (3.3 V to 10 V) |
This feeds antenna power. Voltage and current requirement based on antenna voltage used. Ripple Voltage should be 100 mV Vpp or better. This can be shorted directly to 3.3 V used to supply power to the unit if the antenna can handle 3.3 V. It can handle a maximum current of 150 mA. |
|
4 |
Power LED |
POWER Indicator. High when unit is on, low when off. This is similar to all BD9xx products, except for the requirement for an external resistor. This allows user to use this as a control line. |
When used to drive an LED, a series resistor with a typical value of 300 Ohms is required. This pin supplies a maximum current of 4 mA. For LEDs with Vf above 2.7 or current excess of 4 mA, an external buffer is required. |
|
5 |
RESET_IN |
RESET_IN - ground to reset |
Drive low to reset the unit. Otherwise, leave unconnected. |
|
6 |
RTK LED |
RTK LED. Flashes when an RTK correction is present. This is similar to all BD9xx products, except for the requirement for an external resistor. |
When used to drive an LED, a series resistor with a typical value of 300 Ohms is required. This pin supplies a maximum current of 4 mA. For LEDs with Vf above 2.7 or current excess of 4 mA, an external buffer is required. |
|
7 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
8 |
Satellite |
Satellite LED. Rapid flash indicates <5 satellites. Slow flash indicates >5 satellites. |
When used to drive an LED, a series resistor with a typical value of 300 Ohms is required. This pin supplies a maximum current of 4 mA. For LEDs with Vf above 2.7 or current excess of 4 mA, an external buffer is required. |
|
9 |
USB_OTG_ID |
USB ID pin, tells the receiver when it should be in USB host or device mode. |
Drive low when the receiver is the host. Drive high through a maximum of 1 kOhm pull up when the receiver is the device. |
|
10 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
11 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
12 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
13 |
BOOT_MONITOR* |
Boot to Monitor pin. This prevents the unit from executing the application firmware. |
Drive the pin low at boot up to force the receiver into monitor mode. Do not connect for normal operation. |
|
14 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
15 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
16 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
17 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
18 |
COM2_Rx |
COM 2 Receive Data - TTL Level |
Connect COM2_RX to a transceiver if RS-232 level is required. This pin is connected to two physical pins. |
|
19 |
COM2_CTS |
COM 2 Clear to Send - TTL Level |
Connect COM2_CTS to a transceiver if RS-232 level is required. This pin is connected to two physical pins. |
|
20 |
COM2_Tx |
COM 2 Transmit Data - TTL Level |
Connect COM2_TX to a transceiver if RS-232 level is required. |
|
21 |
COM2_RTS |
COM 2 Request to Send |
Request to Send for COM 2 connect to a transceiver if RS-232 level is required. |
|
22 |
COM1_Tx |
COM 1 Transmit Data – TTL Level |
Connect COM1_TX to a transceiver if RS-232 level is required. |
|
23 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
24 |
COM1_Rx |
COM 1 Receive Data – TTL Level |
Connect COM1_RX to a transceiver if RS-232 level is required. |
|
25 |
USB D (-) |
USB D (-) Bi-directional USB interface data (-) |
Data negative signal of OTG USB port. OTG role (device or host) is determined by OTG_ID (pin 9). Device Mode only. If VCC is supplied, USB detects VBUS. |
|
26 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
27 |
USB D (+) |
USB D (+) Bi-directional USB interface data (+) |
Data positive signal of OTG USB port. OTG role (device or host) is determined by OTG_ID (pin 9). Device Mode only. If VCC is supplied, USB detects VBUS. |
|
28 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
29 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
30 |
PPS (Pulse per Second) |
Pulse per second |
This is 3.3 V TTL level, 4 mA max drive capability. To drive 50 Ohm load to ground, an external buffer is required. PPS Jitter spec is 20 nS. |
|
31 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
32 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
33 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
34 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
35 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
36 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
37 |
Event1 |
Event1 - Input |
Event1 (must be 3.3 V TTL level) |
|
38 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
39 |
Event2 |
Event2 - Input |
Event2 (must be 3.3 V TTL level) |
|
40 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
41 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
42 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
43 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
44 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
45 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
46 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
47 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
48 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
49 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
50 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
51 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
52 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
53 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
54 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
55 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
56 |
COM4_CTS |
COM 4 Clear to Send - TTL Level |
Connect COM4_CTS to a transceiver if RS-232 level is required. |
|
57 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
58 |
COM4_RTS |
COM 4 Request to Send - TTL Level |
Request to Send for COM 4 connect to a transceiver if RS-232 level is required. |
|
59 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
60 |
COM3_Rx |
COM 3 Receive Data – TTL Level |
Connect COM3_RX to a transceiver if RS-232 level is required. |
|
61 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
62 |
COM3_Tx |
COM 3 Transmit Data – TTL Level |
Connect COM3_TX to a transceiver if RS-232 level is required. |
|
63 |
COM4_Rx |
COM 4 Receive Data – TTL Level |
Connect COM4_RX to a transceiver if RS-232 level is required. |
|
64 |
COM4_Tx |
COM 4 Transmit Data – TTL Level |
Connect COM4_TX to a transceiver if RS-232 level is required. |
|
65 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
66 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
67 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
68 |
NO_CONNECT |
RESERVED |
For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
69 |
ETH_RD+ |
Ethernet Receive line plus. Differential pair. |
Connect to Magnetics RD+ |
|
70 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
71 |
ETH_RD- |
Ethernet Receive line minus. Differential pair. |
Connect to Magnetics RD- |
|
72 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
73 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
74 |
I/O_READY |
I/O status ready |
This pin indicates that the signal lines can now be drive. For proper operation of the receiver, do not connect anything to this pin. Reserved for internal use. |
|
75 |
ETH_TD+ |
Ethernet Transmit line plus. Differential pair. |
Connect to Magnetics TD+ |
|
76 |
EN_EXTREF |
Enable External 10 MHz Source |
3.3 V TTL level. Selects between using internal and external 10 MHz source for RF time base. Setting this signal to low uses internal 10 MHz TCXO. Setting signal high sets external reference mode. It is critical for system stability that this signal does not toggle during run-time. Doing so will destabilize PLLs and cause undesirable effects. |
|
77 |
ETH_TD- |
Ethernet Transmit line minus. Differential pair. |
Connect to Magnetics TD- |
|
78 |
EXTREF_IN |
External 10 MHz Input |
10 MHz reference input when EN_EXTREF (pin 76) is high. Reference input must be CMOS minimum 2Vpp. Signal is internally AC coupled. RF tracking performance can be negatively affected by poor external reference. Pin can be grounded if unused. |
|
79 |
GND |
Ground Digital Ground |
Ground Digital Ground |
|
80 |
DO NOT CONNECT |
Reserved |
DO NOT CONNECT |
80-pin connector details
MFG - Panasonic (P/N AXK780347G)
Recommended mating connector
MFG - Panasonic (P/N AXK880145WG)
CAUTION – The form factor of the BD940 receiver module requires that the electrical connection of the 80-pin connector is a "blind" connection, meaning it must be placed and connected without a direct view of the connector. This blind connection requires that extreme caution is exercised when installing the BD940 receiver module onto the PCA (Printed Circuit Assembly). The correct process is to:
-
Verify the shield tabs are straight, and not bent inward or outward. If needed, carefully straighten the tabs with your fingers (observe ESD protection!) to get the shield tabs straight.
-
Carefully align the receiver module over the mounting location of the PCA and lower the receiver module down to the PCA so that all four shield tabs enter into the tab slots/holes on the PCA. When the BD940 connector starts to make contact with the PCA connector, carefully press over the connection area of the receiver module to mate the two connectors. A slight "click" feel is normal. Be very careful not to use excessive force as this will damage the receiver module, your PCA, or both.
-
After the connection is made, solder the shield tabs to the PCA to complete the installation.
BD940-INS 44-pin connector pinout
|
Pin |
Usage |
|
|
|---|---|---|---|
|
1 |
GND |
Common ground connection |
Connect to common ground. |
|
2 |
LED2- |
LED driver for power/data logging |
Active high 3.3 V 4 mA. |
|
3 |
LED1- |
LED driver for RTK corrections |
Active high 3.3 V 4 mA. |
|
4 |
LED1+ |
LED driver for tracking SVs |
Active high 3.3 V 4 mA. |
|
5 |
USB_VBUS |
USB 5 V power |
5 V output to power USB devices, enabled by USB_ID. |
|
6 |
IMU_LED |
LED driver for IMU status |
Active high 3.3 V 4 mA. |
|
7 |
5V |
Output of 5 V switching regulator |
Do not connect. For Boxster I/O board. |
|
8 |
EVENT1 |
Event1 input |
3.3 V input. |
|
9 |
USB_DM |
USB D- differential signal |
USB_DM and USB_DP need to be differentially routed. |
|
10 |
GND |
Common ground connection |
Connect to common ground. |
|
11 |
USB_DP |
USB D+ differential signal |
USB_DM and USB_DP need to be differentially routed. |
|
12 |
GND |
Common ground connection |
Connect to common ground. |
|
13 |
MX_PPS2 |
One pulse-per-second |
3.3 V output, 8 us width, <20 ns rise time. |
|
14 |
USB_ID |
Cable detect for USB device or host |
3.3 V input, floating = USB device mode and VBUS is OFF, 3.3 V = USB device mode and VBUS is OFF, 0 V = USB host mode and VBUS is 5 V. |
|
15 |
Event0 |
Event0 input |
3.3 V input. |
|
16 |
DMI1 |
Quadrature 2-pin DMI input |
3.3 V input, DMI1 leads DMI2 in forward direction. |
|
17 |
COM4_CTS |
Serial port 2 Clear To Send |
TTL |
|
18 |
COM4_RTS |
Serial port 2 Ready To Send |
TTL |
|
19 |
COM1_RX_RS232 |
Serial port 1 receive input |
RS-232 voltage level input. |
|
20 |
COM1_TX_RS232 |
Serial port 1 transmit output |
RS-232 voltage level output. |
|
21 |
COM4_RX |
Serial port 2 receive input |
TTL |
|
22 |
COM4_TX |
Serial port 2 transmit output |
TTL |
|
23 |
GND |
Common ground connection |
Connect to common ground. |
|
24 |
PWR_ON |
Graceful shutdown control |
Active high. 0 V = OFF/start graceful shutdown, Floating = ON, 3-32 V = ON. |
|
25 |
GND |
Common ground connection |
Connect to common ground. |
|
26 |
GND |
Common ground connection |
Connect to common ground. |
|
27 |
ET_RD+ |
Ethernet differential receive plus (+) |
Magnetics on-board, ET_RD+ and ET_RD- need to be differentially routed. |
|
28 |
GND |
Ground Digital Ground |
Ground Digital Ground. |
|
29 |
ET_RD- |
Ethernet differential receive minus (-) |
Magnetics on-board, ET_RD+ and ET_RD- need to be differentially routed. |
|
30 |
GND |
Common ground connection |
Connect to common ground. |
|
31 |
ET_TD+ |
Ethernet differential transmit plus. |
Magnetics on-board, ET_TD+ and ET_TD- need to be differentially routed. |
|
32 |
GND |
Common ground connection |
Connect to common ground. |
|
33 |
ET_TD- |
Ethernet differential transmit minus. |
Magnetics on-board, ET_TD+ and ET_TD- need to be differentially routed. |
|
34 |
GND |
Common ground connection |
Connect to common ground. |
|
35 |
RESET_IN |
Receiver reset |
Active low, internally pulled high to 3.3 V, 0 V = held in reset. |
|
36 |
GND |
Common ground connection |
Connect to common ground. |
|
37 |
GND |
Common ground connection |
Connect to common ground. |
|
38 |
DMI2 |
Quadrature 2-pin DMI input |
3.3 V input, DMI1 leads DMI2 in forward direction. |
|
39 |
CAN1_H |
CAN + differential signal |
CAN1_H and CAN1_L need to be differentially routed |
|
40 |
CAN1_L |
CAN - differential signal |
CAN1_H and CAN1_L need to be differentially routed |
|
41 |
GND |
Common ground connection |
Connect to common ground. |
|
42 |
GND |
Common ground connection |
Connect to common ground. |
|
43 |
EXT_PWR_IN |
Input power 5.5 - 30 V DC |
Connect pin 43 and 44 together. |
|
44 |
EXT_PWR_IN |
Input power 5.5 - 30 V DC |
Connect pin 43 and 44 together. |
44-pin connector details
MFG - SAMTEC (P/N TMM-122-03-S-D)
Recommended mating connector
MFG - SAMTEC (P/N SQW-122-01-L-D)
