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This component is the for the Antminer E7a (specifically designed for the Etchash algorithm, used for mining ETC).
: Tracing signal paths across the board to locate faults in communication between the mainboard and peripheral FPCs. Assembly Guidance
The E7A MB PCB V3 Link is a specific hardware debugging and programming interface standard for revision 3 motherboards utilizing the E7A chipset. It enables low-level access to the CPU for flashing firmware, reading registers, and bypassing standard bootloaders.
during standard operation to prevent moisture-related breakage. Firmware and Customization
| Feature | E7A V1 Link | E7A V2 Link | | | :--- | :--- | :--- | :--- | | Header Pitch | 2.54mm (standard) | 1.27mm (high density) | 1.27mm with keying | | Voltage | 5V only | 3.3V only | 2.8V – 3.3V (auto-sensing) | | Max Speed | 500 kHz | 4 MHz | 1 MHz (stability fix) | | Reset Handling | External pull-down | Shared with power seq | Dedicated line with V3 glue logic | | Security Fuse | None | Weak (reset bypass) | DBG_LOCK (titanium grade) | | Common Failure | Bent pins | Broken retention clip | Capacitor C149 failure |
| Pin | Signal | Description | |------|--------|-------------| | 1 | VREF (3.3V) | Target voltage sense | | 2 | SWDIO / TMS | Data I/O | | 3 | GND | Ground | | 4 | SWCLK / TCK | Clock | | 5 | GND | Ground | | 6 | SWO / TDO | Trace output | | 7 | KEY / NC | No connect (keyed) | | 8 | nRESET | Reset line | | 9 | GND | Ground | | 10 | nTRST / NC | Optional reset |
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
This component is the for the Antminer E7a (specifically designed for the Etchash algorithm, used for mining ETC). e7a mb pcb v3 link
: Tracing signal paths across the board to locate faults in communication between the mainboard and peripheral FPCs. Assembly Guidance This public link is valid for 7 days
The E7A MB PCB V3 Link is a specific hardware debugging and programming interface standard for revision 3 motherboards utilizing the E7A chipset. It enables low-level access to the CPU for flashing firmware, reading registers, and bypassing standard bootloaders. Can’t copy the link right now
during standard operation to prevent moisture-related breakage. Firmware and Customization
| Feature | E7A V1 Link | E7A V2 Link | | | :--- | :--- | :--- | :--- | | Header Pitch | 2.54mm (standard) | 1.27mm (high density) | 1.27mm with keying | | Voltage | 5V only | 3.3V only | 2.8V – 3.3V (auto-sensing) | | Max Speed | 500 kHz | 4 MHz | 1 MHz (stability fix) | | Reset Handling | External pull-down | Shared with power seq | Dedicated line with V3 glue logic | | Security Fuse | None | Weak (reset bypass) | DBG_LOCK (titanium grade) | | Common Failure | Bent pins | Broken retention clip | Capacitor C149 failure |
| Pin | Signal | Description | |------|--------|-------------| | 1 | VREF (3.3V) | Target voltage sense | | 2 | SWDIO / TMS | Data I/O | | 3 | GND | Ground | | 4 | SWCLK / TCK | Clock | | 5 | GND | Ground | | 6 | SWO / TDO | Trace output | | 7 | KEY / NC | No connect (keyed) | | 8 | nRESET | Reset line | | 9 | GND | Ground | | 10 | nTRST / NC | Optional reset |