
FUNCTION/FEATURES
- OpenVPX 1.0” pitch rear chassis I/O panel with IEEE 1101.10/11, Type IV, Injector/Ejector handle
- Optimized for NAI 68INT6 and 68INT6H SBC boards
- Industry standard commercial connectors, where applicable
- High density inboard connector provides function module I/O
- Standard NAI Mini DisplayPort interface receptacle (for HDMI or DDP video)
DESCRIPTION
The 68RTINT6 is the generic base product nomenclature for the SOSA™-aligned 3U OpenVPX Rear I/O Transition Module (RTM) specifically optimized for the 68INT6 and 68INT6H SBC module (boards). The 68RTINT6 is for use in OpenVPX systems/chassis with RTM accessibility that require reliable interconnection between the rear I/O P1 & P2 OpenVPX connectors and the ‘outside world’.
SPECIFICATIONS
| Operating Temperature: | 0°C to 70°C (typical usage, contact factory for extended temperature range) |
| Storage Temperature: | -40°C to 85°C |
| Humidity: | 95% RH, non-condensing |
| Protective Covering: | Both sides of the board are protected/covered with solder mask (Conformal coat available on special order – Contact Factory) |
| I/O Connector Configuration: | One panel mini DisplayPort receptacle for HDMI/DDP video (J2) Two panel USB-3-A receptacles, stacked, for USB Port 1 & Port 2 (J3) Two inboard function module 44-pin NAI-XMC I/O Header (J5, J7) One inboard 1-pin header, SYS GND Reference point (JP4) One inboard 2-pin header, jumper, NVMRO (JP5) One inboard 2-pin header for RTC_STDBY, external or 3.3V battery select (JP6) One inboard 2-pin header, jumper, MRSTn (JP8) Two inboard 3-pin socket, SER (JP9, JP10) One inboard 5-pin header, jumper, TTL_CH1-4/GDiscrete (JP11) One panel mini-HDMI-type C receptacle for GbE (ETH2) and RS-232 console port (JP19) |
| Size: | 3U (100 mm H x 80 mm D) / 1” 5HP pitch width (25.4 mm W) |
| Weight: | 5 oz. (142 g) (approx.) |
68RTINT6 INSTALLATION
Note
For reference only.

68RTINT6 CONNECTOR/PIN-OUT INFORMATION
I/O Connectors
User and defined I/O is available through panel mounted and inboard header connectors via the VPX RP0, RP1 & RP2 user defined rear I/O backplane connectors. The 68RTINT6 RTM is optimized for use for the 68INT6 and 68INT6H SOSA™-aligned 3U OpenVPX SBC I/O cards with specific pinout references. Please reference additional information and documentation from the respective 68INT6 and 68INT6H board web product pages.
Caution
Do not connect to any undesignated or n/c pins.
Note
The following notes apply unless otherwise specified:
- Maximum ratings for the VPX MultiGig-RT2 type rear I/O connectors are as follows (per TE connectivity 108-2072, Rev F):
• Operating Voltage: 166 volts AC peak or DC
• Current: Signal Wafers: 1.5 ampere at <30°C (Single circuit, free air)- This document provides signal names for reference only and may be referring to the 68INT6/6H base product with the “-N” XMC module or are specific to the 68RTINT6.
RTM Panel Connector System Ground Pins
None. See specific connector, header or receptacle pin out.
RTM Panel Connector Chassis Grounding Pins
Panel: No dedicated chassis GND pins available.
After installing and securing withing a VPX chassis, connect the panel itself, rear VPX connector key guides, and the panel receptacle shell to the chassis.
RTM CONNECTORS POSITIONING AND LAYOUT

RTM DEFINED I/O PIN-OUTS
RTM VPX RP0 I/O Definition
| Row | Row | Row | Row | Row | Row | Row | |
| RP0 | A | B | C | D | E | F | G |
| 1 | n/c | n/c | n/c | n/c | n/c | n/c | n/c |
| 2 | n/c | n/c | n/c | n/c | n/c | n/c | n/c |
| 3 | n/c | n/c | n/c | n/c | n/c | n/c | n/c |
| 4 | NVMRO | P0_SYSRST# | GND | n/c | GND | n/c | n/c |
| 5 | n/c | n/c | GND | +3V3_AUX | GND | n/c | n/c |
| 6 | n/c | n/c | GND | n/c | GND | n/c | n/c |
| 7 | n/c | n/c | n/c | n/c | n/c | GND | n/c |
| 8 | GND | n/c | n/c | GND | n/c | n/c | GND |
| 9 | n/c | n/c | GND | n/c | n/c | GND | GDISCRETE1 |
| 10 | GND | n/c | n/c | GND | n/c | n/c | GND |
| 11 | n/c | n/c | GND | n/c | n/c | GND | RTC_STDBY |
| 12 | GND | n/c | n/c | GND | n/c | n/c | GND |
| 13 | n/c | n/c | GND | n/c | n/c | GND | n/c |
| 14 | GND | n/c | n/c | GND | n/c | n/c | GND |
| 15 | n/c | n/c | GND | n/c | n/c | GND | +5V_USB1 |
| 16 | GND | n/c | n/c | GND | n/c | n/c | GND |
KEY
| = Maintenance | |
| = USB1 (3.0 capable) |
RTM VPX RP1 I/O Definition
| Row | Row | Row | Row | Row | Row | Row | |
| RP1 | A | B | C | D | E | F | G |
| 1 | MOD1_DATIO4 | MOD1_DATIO3 | GND | MOD1_DATIO2 | MOD1_DATIO1 | GND | SER_TXD |
| 2 | GND | MOD1_DATIO8 | MOD1_DATIO7 | GND | MOD1_DATIO6 | MOD1_DATIO5 | GND |
| 3 | MOD1_DATIO12 | MOD1_DATIO11 | GND | MOD1_DATIO10 | MOD1_DATIO9 | GND | SER_RXD |
| 4 | GND | MOD1_DATIO16 | MOD1_DATIO15 | GND | MOD1_DATIO14 | MOD1_DATIO13 | GND |
| 5 | MOD1_DATIO20 | MOD1_DATIO19 | GND | MOD1_DATIO18 | MOD1_DATIO17 | GND | TTL-CH1 |
| 6 | GND | MOD1_DATIO24 | MOD1_DATIO23 | GND | MOD1_DATIO22 | MOD1_DATIO21 | GND |
| 7 | n/c | n/c | GND | n/c | n/c | GND | n/c (MRSTn) |
| 8 | GND | n/c | n/c | GND | n/c | n/c | GND |
| 9 | DDP_B0_D_P | DDP_B0_D_N | GND | DDP_B1_D_P | DDP_B1_D_N | GND | n/c (SER_TXD0) |
| 10 | GND | DDP_B2_D_P | DDP_B2_D_N | GND | DDP_B3_D_P | DDP_B3_D_N | GND |
| 11 | HDMI_SCL_AUXP | HDMI_SDA_AUXN | GND | HDMI_HPD | +V5S_VIDEO | GND | n/c (SER_TXD2) |
| 12 | GND | USB1_P | USB1_N | GND | USB2_P | USB2_N | GND |
| 13 | USB1_SSRX_P | USB1_SSRX_N | GND | USB1_SSTX_P | USB1_SSTX_N | GND | n/c (SER_RXD0) |
| 14 | GND | n/c | n/c | GND | n/c | n/c | GND |
| 15 | ETH2_TP0_P | ETH2_TP0_N | GND | ETH2_TP1_P | ETH2_TP1_N | GND | n/c (SER_RXD2) |
| 16 | GND | ETH2_TP2_P | ETH2_TP2_N | GND | ETH2_TP3_P | ETH2_TP3_N | GND |
KEY
| = USB1 (3.0 capable) | = Ethernet 2 | ||
| = USB2 (2.0) | = DisplayPort | ||
| = MODULE (2) Standard I/O | = TTL |
RTM VPX RP2 I/O Definition
| Row | Row | Row | Row | Row | Row | Row | |
| RP2 | A | B | C | D | E | F | G |
| 1 | MOD2_DATIO12 | MOD2_DATIO11 | GND | MOD2_DATIO6 | MOD2_DATIO5 | GND | +5V_USB2 |
| 2 | GND | MOD2_DATIO30 | MOD2_DATIO29 | GND | MOD2_DATIO18 | MOD2_DATIO17 | GND |
| 3 | MOD2_DATIO22 | MOD2_DATIO21 | GND | MOD2_DATIO20 | MOD2_DATIO19 | GND | TTL_CH2 |
| 4 | GND | MOD2_DATIO32 | MOD2_DATIO31 | GND | MOD2_DATIO24 | MOD2_DATIO23 | GND |
| 5 | MOD2_DATIO4 | MOD2_DATIO3 | GND | MOD2_DATIO2 | MOD2_DATIO1 | GND | TTL_CH3 |
| 6 | GND | MOD2_DATIO26 | MOD2_DATIO25 | GND | MOD2_DATIO14 | MOD2_DATIO13 | GND |
| 7 | MOD2_DATIO10 | MOD2_DATIO9 | GND | MOD2_DATIO8 | MOD2_DATIO7 | GND | TTL_CH4 |
| 8 | GND | MOD2_DATIO28 | MOD2_DATIO27 | GND | MOD2_DATIO16 | MOD2_DATIO15 | GND |
KEY
| = MODULE (2) Standard I/O | |
| = USB2 (2.0) | |
| = TTL |
J2, DisplayPort
One panel mini DisplayPort receptacle for HDMI/DDP video (J2)
MFG: E9320-001-01, Pulse (or equivalent)

68RTINT6 J2 Mini-DisplayPort Video
| VPX RP | Signal (REF) | Mini DisplayPort J2 |
| GND | 1 | |
| RP1-D11 | HDMI_HPD | 2 |
| RP1-A9 | DDP_B0_D_P | 3 |
| n/c | 4 | |
| PR1-B9 | DDP_B0_D_N | 5 |
| n/c | 6 | |
| GND | 7 | |
| GND | 8 | |
| RP1-D9 | DDP_B1_D_P | 9 |
| RP1-E10 | DDP_B3_D_P | 10 |
| RP1-E9 | DDP_B1_D_N | 11 |
| RP1-F10 | DDP_B3_D_N | 12 |
| GND | 13 | |
| GND | 14 | |
| RP1-B10 | DDP_B2_D_P | 15 |
| RP1-A11 | HDMI_SCL_AUXP | 16 |
| RP1-C10 | DDP_B2_D_N | 17 |
| RP1-B11 | HDMI_SDA_AUXN | 18 |
| GND | 19 | |
| RP1-E11 | +V5S_VIDEO | 20 |
J3, USB
Two panel USB-A receptacles (stacked), for USB Port 1 & Port 2 (J3, A & B)
MFG: GSB311231HR, AMPHENOL; Connector, USB 3.0 STD A Stacked, or equivalent
(2x USB Type A)

68RTINT6 J3 USB
| VPX RP | Signal (REF) | USB Type-A J2 |
| RP1-G11 | +5V_USB1 | 1 |
| RP1-F2 | USB1_N | 2 |
| RP1-E2 | USB1_P | 3 |
| GND | 4 | |
| RP1-B1 | USB1_SSRX_N | 5 |
| RP1-A1 | USB1_SSRX_P | 6 |
| GND | 7 | |
| RP1-E1 | USB1_SSTX_N | 8 |
| RP1-D1 | USB1_SSTX_P | 9 |
| RP1-G13 | +5V_USB2 | 10 |
| RP1-F10 | USB2_N | 11 |
| RP1-E10 | USB2_P | 12 |
| GND | 13 | |
| n/c | 14 | |
| n/c | 15 | |
| GND | 16 | |
| n/c | 17 | |
| n/c | 18 |
KEY
| = USB1 (3.0 capable) | |
| = USB2 (2.0) |
J5 & J7, Inboard Module Function I/O Connector Interfaces
Two inboard 44-pin Header, Module Standard I/O interface (J5, J7)
MFG: M80-5114422, Harwin; CONN, 44Pin, Male, Vertical, 2MM Spacing, or equivalent

68RTINT6-1 J5 (M1) Inboard Module Standard I/O
| VPX RP | J5 Inboard I/O | VPX RP | |||
| GND | 1 | 23 | GND | ||
| RP1-E1 | MOD1-DATIO01 | 2 | 24 | MOD1-DATIO02 | RP1-D1 |
| RP1-B2 | MOD1-DATIO03 | 3 | 25 | MOD1-DATIO04 | RP1-A2 |
| n/c | 4 | 26 | n/c | ||
| RP1-F2 | MOD1-DATIO05 | 5 | 27 | MOD1-DATIO06 | RP1-E2 |
| n/c | 6 | 28 | n/c | ||
| RP1-C2 | MOD1-DATIO07 | 7 | 29 | MOD1-DATIO08 | RP1-B2 |
| RP1-E3 | MOD1-DATIO09 | 8 | 30 | MOD1-DATIO10 | RP1-D3 |
| n/c | 9 | 31 | n/c | ||
| RP1-B3 | MOD1-DATIO11 | 10 | 32 | MOD1-DATIO12 | RP1-A3 |
| n/c | 11 | 33 | n/c | ||
| RP1-F4 | MOD1-DATIO13 | 12 | 34 | MOD1-DATIO14 | RP1-E4 |
| RP1-C4 | MOD1-DATIO15 | 13 | 35 | MOD1-DATIO16 | RP1-B4 |
| n/c | 14 | 36 | n/c | ||
| RP1-E5 | MOD1-DATIO17 | 15 | 37 | MOD1-DATIO18 | RP1-D5 |
| n/c | 16 | 38 | n/c | ||
| RP1-B5 | MOD1-DATIO19 | 17 | 39 | MOD1-DATIO20 | RP1-A5 |
| RP1-F6 | MOD1-DATIO21 | 18 | 40 | MOD1-DATIO22 | RP1-E6 |
| n/c | 19 | 41 | n/c | ||
| RP1-C6 | MOD1-DATIO23 | 20 | 42 | MOD1-DATIO24 | RP1-B6 |
| n/c | 21 | 43 | n/c | ||
| n/c | 22 | 44 | n/c | ||

68RTINT6-1 J7 (M2) Inboard Module Standard I/O
| VPX RP | J7 Inboard I/O | VPX RP | |||
| GND | 1 | 23 | GND | ||
| RP2-E5 | MOD2-DATIO01 | 2 | 24 | MOD2-DATIO02 | RP2-D5 |
| RP2-B5 | MOD2-DATIO03 | 3 | 25 | MOD2-DATIO04 | RP2-A5 |
| RP2-C6 | MOD2-DATIO25 | 4 | 26 | MOD2-DATIO26 | RP2-B6 |
| RP2-E1 | MOD2-DATIO05 | 5 | 27 | MOD2-DATIO06 | RP2-D1 |
| n/c | 6 | 28 | n/c | ||
| RP2-E7 | MOD2-DATIO07 | 7 | 29 | MOD2-DATIO08 | RP2-D7 |
| RP2-B7 | MOD2-DATIO09 | 8 | 30 | MOD2-DATIO10 | RP2-A7 |
| RP2-C8 | MOD2-DATIO27 | 9 | 31 | MOD2-DATIO28 | RP2-B8 |
| RP2-B1 | MOD2-DATIO11 | 10 | 32 | MOD2-DATIO12 | RP2-A1 |
| n/c | 11 | 33 | n/c | ||
| RP2-F6 | MOD2-DATIO13 | 12 | 34 | MOD2-DATIO14 | RP2-E6 |
| RP2-F8 | MOD2-DATIO15 | 13 | 35 | MOD2-DATIO16 | RP2-E8 |
| RP2-C2 | MOD2-DATIO29 | 14 | 36 | MOD2-DATIO30 | RP2-B2 |
| RP2-F2 | MOD2-DATIO17 | 15 | 37 | MOD2-DATIO18 | RP2-E2 |
| n/c | 16 | 38 | n/c | ||
| RP2-E3 | MOD2-DATIO19 | 17 | 39 | MOD2-DATIO20 | RP2-D3 |
| RP2-B3 | MOD2-DATIO21 | 18 | 40 | MOD2-DATIO22 | RP2-A3 |
| RP2-C4 | MOD2-DATIO31 | 19 | 41 | MOD2-DATIO32 | RP2-B4 |
| RP2-F4 | MOD2-DATIO23 | 20 | 42 | MOD2-DATIO24 | RP2-E4 |
| n/c | 21 | 43 | n/c | ||
| n/c | 22 | 44 | n/c | ||
JP4, JP5, JP6, & JP8 Ancillary Select jumper/shunts and SYS GND reference point
One inboard 2-pin header, jumper, NVMRO (JP5)
One inboard 2-pin header for RTC_STDBY, external or 3.3V battery select (JP6)
One inboard 2-pin header, jumper, MRSTn (JP8)
MFG: TMS-101-51-T-D (x2), SAMTEC; HDR,1x 2, 0.05”, Vertical, TH or equivalent
BAT1: BR-1225A/HBN, Panasonic; Battery, 3V, 48mAh, Lithium, or equivalent
One inboard 1-pin header, SYS GND Reference point (JP4)
MFG: TSW-101-06-T-S, SAMTEC; CONN, HDR,1X1, .100, VERTICAL, TH


68RTINT6 JP5, JP6, JP8 & JP4, Ancillary Select jumper/shunts
| VPX RP | Signal (REF) | NVMRO JP5 |
| RP0-A4 | NVMRO | 1 |
| GND | 2 | |
| VPX RP | Signal (REF) | RTC_STDBY JP6 |
| RP0-G11 | RTC_STBY | 1 |
| BAT1 @ +3.3V | 2 | |
| VPX RP | Signal (REF) | NVMRO JP8 |
| RP1-G7 | MRSTn | 1 |
| GND | 2 | |
| Signal (REF) | SYS GND JP4 | |
| GND | 1 |
NVMRO = Non-volatile memory read only
MRSTn = Master Reset
JP9 & JP10, SER Sockets
Two Serial (SER0 & SER2) 3-pin Sockets (JP9 & JP10)
MFG: SLM-103-01-G-S, Samtec; SOC, 3x1, 1.27 mm Low Profile, Vertical, or equivalent

68RTINT6 JP9 & JP10 Serial Interface Sockets
| VPX RP | Signal (REF) | SER0 JP9 | VPX RP | Signal (REF) | SER2 JP10 |
| RP1-G13 | SER_RXD0 | 1 | RP1-G15 | SER_RXD2 | 1 |
| RP1-G9 | SER_TXD0 | 2 | RP1-G11 | SER_TXD2 | 2 |
| GND | 3 | GND | 3 |
JP11, TTL_CH1-4, GDiscrete Jumper/Header
One inboard 5-pin header, jumper, TTL_CH1-4, GDiscrete (JP11)
MFG: TSM-105-02-T-DV, Samtec; HDR, 5x2, 0.100” spacing, Vertical, SM or equivalent

68RTINT6 JP11, TTL_CH1-4, GDiscrete jumper/header
| VPX RP | Signal (REF) | TTL/GDiscrete JP11 |
| RP0-G9 | GDISCRETE1 | 1 |
| System GND | 2 | |
| RP1-G5 | TTL_CH1 | 3 |
| System GND | 4 | |
| RP2-G3 | TTL_CH2 | 5 |
| System GND | 6 | |
| RP2-G5 | TTL_CH3 | 7 |
| System GND | 8 | |
| RP2-G7 | TTL_CH4 | 9 |
| System GND | 10 |
JP19, Mini-HDMI-Type I/O Connectors Pin Mapping
MFG: 685119136923, Wurth (or equivalent)

68RTINT-1 JP19 Mini-HDMI-Type Receptacle I/O
| VPX-RP | Signal (REF) | MINI-HDMI-type JP19 |
| N/C | 1 | |
| RP1-A15 | ETH2-TP0+ | 2 |
| RP1-B15 | ETH2-TP0- | 3 |
| N/C | 4 | |
| RP1-D15 | ETH2-TP1+ | 5 |
| RP1-E15 | ETH2-TP1- | 6 |
| N/C | 7 | |
| RP1-B16 | ETH2-TP2+ | 8 |
| RP1-C16 | ETH2-TP2- | 9 |
| N/C | 10 | |
| RP1-E16 | ETH2-TP3+ | 11 |
| RP1-F16 | ETH2-TP3- | 12 |
| GND | 13 | |
| N/C | 14 | |
| N/C | 15 | |
| N/C | 16 | |
| RP1-G1 | (SER-RXD) | 17 |
| RP1-G3 | (SER-TXD) | 18 |
| GND | 19 |
KEY
| = Port 2 / 10/100/1000Base-T (option) | |
| = Maintenance (reserved) |
PART NUMBER DESIGNATION
68RTINT6-X is used/referenced to:
Standard Product Part Number(s): 68RTINT6-X
| X | = Configuration Options |
| 1 | • Supports standard function module I/O & routing. • J5/J7 = Harwin 44-pin type header |
| X | = Other than listed; indicates custom configuration – Contact Factory |
Specifications are subject to change without notice.
REVISION HISTORY
| 68RTINT6 Data Sheet Revision History | ||
| Revision | Revision Date | Description |
| A | 2024-02-28 | ECO C11287, initial release of 68RTINT6 data sheet. |
| A1 | 2026-01-21 | ECO C13295, corrected JP11 pinout table & corresponding reference image. |
DOCS.NAII REVISIONS
| Revision Date | Description |
|---|---|
| 2026-08-20 | Updated documentation to docs.naii format. |
NAI Cares
North Atlantic Industries (NAI) is a leading independent supplier of Embedded I/O Boards, Single Board Computers, Rugged Power Supplies, Embedded Systems and Motion Simulation and Measurement Instruments for the Military, Aerospace and Industrial Industries. We accelerate our clients’ time-to-mission with a unique approach based on a Configurable Open Systems Architecture™ (COSA®) that delivers the best of both worlds: custom solutions from standard COTS components.
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Please visit us at: www.naii.com or select one of the following for immediate assistance:
Documentation
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http://www.naii.com/applicationnotes
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http://www.naii.com/calibrationrepairs
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