APOLLO Command Module Test Article

This board is a Command Module compatible with the Apollo ATCA blade family (​http://apollo-blade.info). The Rev A board is primarily intended to validate the mechanical design and provide a platform for testing production service modules. It has the following features:

• Standard CM mechanics with two sets of high/low speed mating connectors and mounting holes
• Loop-back of all high-speed serial links
• Header connector access to all low-speed signals
• High-current screw-type terminal access to 12V and GND

Rev A Board submitted to JLC and received 3/21/22.

Rev B board and Mezzanine submitted to JLC 4/27/22

Links

• Git: ​https://gitlab.com/BU-EDF/edf-projects/apollocm/templatecm (hardware)
  • AVR code: ​https://gitlab.com/BU-EDF/edf-projects/apollocm/templatecm/-/tree/develop/AVR_Code
• TestCmCodeNotes? -- development/debug notes for uC code

Rev B changes

• Place header connectors on grid (0.1")
• Change connectors from 2x20 to 2x25 to account for extra power pins.
• Mounting holes:
  • Add front panel mounting hardware points (maybe reproduce Charlie's scheme using right-angle bus connectors?)
  • Correct splice plate mounting hole sizes
  • Add mounting holes for mezzanine board
• Replace 3.3V regulator with a larger one to support mezzanine boards
• Add 5V regulator if needed by mezzanine boards
• Add 12V, 3.3V (and 5V?) pins to mezzanine connectors

Low-speed connector pinout

Dir -> "In" means input to SM from CM

| Pin | Signal     | Dir | Notes                        |
|-----+------------+-----+------------------------------|
| A1  | PWR_GOOD   | In  | 3.3V CPLD                    |
| A2  | TMS        | Out | 30R series from 3.3V CPLD    |
| A3  | TDO        | Out | 3.3V CPLD                    |
| A4  | TX_IPMC    | Out | 3.3V TRST from UART Mux      |
| A5  | TX_ZYNQ    | Out | 3.3V Zynq                    |
| A6  | SENSE_SDA  | I/O | 4k7 pullup to 3.3V / I2C     |
| A7  | PWR_EN     | Out | 3.3V Zynq                    |
| A8  | GPIO0      | ?   | 3.3V Zynq                    |
|-----+------------+-----+------------------------------|
| B1  | GND/GPIO1  |     |                              |
| B2  | GND        |     |                              |
| B3  | GND        |     |                              |
| B4  | GND/GPIO2  |     |                              |
| B5  | GND        |     |                              |
| B6  | GND/GPIOC0 |     |                              |
| B7  | GND        |     |                              |
| B8  | GND/GPIOC1 |     |                              |
|-----+------------+-----+------------------------------|
| C1  | EN         | Out | 1k to GND on SM, 3.3V Zynq   |
| C2  | TCK        | Out | 30R series from 3.3V CPLD    |
| C3  | TDI        | In  | 30R series from 3.3V CPLD    |
| C4  | RX_IPMC    | In  | 4k7 pullup 3.3V, to UART Mux |
| C5  | RX_ZYNQ    |     | 4k7 pullup 3.3V, to UART Mux |
| C6  | SENSE_SCL  |     | 4k7 pullup to 3.3V / I2C     |
| C7  | MON_RX     | In  | 3.3V Zynq                    |
| C8  | PS_RST     | ?   | 10k pullup 3.3V, 3.3V CPLD   |
|-----+------------+-----+------------------------------|

Also we have a bunch of these Trenz modules: ​TE0714 which belong to Ed. They can support up to 6.25 Gbps.

Useful Links

• ​APOLLO_MECH%20Model%20(1).pdf - mechanical drawing (​DXF file)
• ​Cornell_6089-103-RevB_PCB_FAB_28Feb2019.zip - Gerber files for Cornell Rev 1 board
• ​TWEPP 2019 talk by Eric