Xeltek: Difference between revisions
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= 5000E = | = 5000E = | ||
== Hardware == | |||
The 5000E is internally composed of an 8 board stack. From top to bottom, the boards are: | |||
- GND DRV | |||
- V3 DRV | |||
- V3 (P1-72) DRV | |||
- V1 DRV | |||
- V2 DRV | |||
- IO BOARD | |||
- MCU BOARD | |||
- POWER BOARD | |||
=== Voltage Pin Driver Boards === | |||
for | The V1/V2/V3* and GND drive boards share a similar topology. A set of shift registers is used to configure a transistor high or low-side drive. The GND board has two additional relays on pins, possibly for support of some high current device. The V1, V2 and V3 boards use a 74HC4094 shift reg, a ULN2003 transistor array and a high-side transistor to switch the voltage. The V2 and V3 boards incorporate a diode to prevent reverse biasing of the transistor which suggests the V1 voltage is the highest voltage used. | ||
=== IO Board === | |||
( | The IO board is just a Spartan XC2S50E FPGA connected to each IO line through a 220 ohm resistor and a diode voltage clamp. Whether the I/O voltage tracks one of the supplies (V3?) is unknown. | ||
=== MCU Board === | |||
Components: | |||
- AT91R40008 Processor (ARM7, no rom, very few peripherals, external bus interface) | |||
- TLC7226 Quad DAC | |||
- EN29LV040A Flash (512kB) | |||
- "Xeltek AE81" (Almost certainly an OTP FPGA) | |||
- USB Device controller (part # unreadable in photos) | |||
=== Power Board === | |||
- 3x LM317 + 3x MC34063 switchers | |||
- Topology not yet reversed | |||
- Misc op amps | |||
== Software == | |||
A basic bootloader / USB loader is resident in the on-board flash. The Host software communicates with this USB loader and downloads the actual programming routines into SRAM. | |||
Revision as of 06:56, 18 May 2018
Superpro and such
5000E
Hardware
The 5000E is internally composed of an 8 board stack. From top to bottom, the boards are:
- GND DRV - V3 DRV - V3 (P1-72) DRV - V1 DRV - V2 DRV - IO BOARD - MCU BOARD - POWER BOARD
Voltage Pin Driver Boards
The V1/V2/V3* and GND drive boards share a similar topology. A set of shift registers is used to configure a transistor high or low-side drive. The GND board has two additional relays on pins, possibly for support of some high current device. The V1, V2 and V3 boards use a 74HC4094 shift reg, a ULN2003 transistor array and a high-side transistor to switch the voltage. The V2 and V3 boards incorporate a diode to prevent reverse biasing of the transistor which suggests the V1 voltage is the highest voltage used.
IO Board
The IO board is just a Spartan XC2S50E FPGA connected to each IO line through a 220 ohm resistor and a diode voltage clamp. Whether the I/O voltage tracks one of the supplies (V3?) is unknown.
MCU Board
Components:
- AT91R40008 Processor (ARM7, no rom, very few peripherals, external bus interface) - TLC7226 Quad DAC - EN29LV040A Flash (512kB) - "Xeltek AE81" (Almost certainly an OTP FPGA) - USB Device controller (part # unreadable in photos)
Power Board
- 3x LM317 + 3x MC34063 switchers - Topology not yet reversed - Misc op amps
Software
A basic bootloader / USB loader is resident in the on-board flash. The Host software communicates with this USB loader and downloads the actual programming routines into SRAM.