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logicog
dc16b25d62
The SWTG018AS-A V2.0 is an 8x2.5GBit/s port + 1 SFP+ port unmanged device
It is sold in an unbranded casing e.g. by Ampcom.
Hardware:
SoC: RTL8373N
Additional PHY: RTL8224
Flash: Puya P25D40SH (4MBit, slimmer, not standard SOP-8 package!)
LEDs: 1 Green + 1 Orange per Ethernet port (green designates 2.5GBit)
1 Green LED for the SFP+ port
The photos already show a modified PCB: Unpopulated resistors R52 and R53
have been bridged in order to enable the serial console. The smaller flash
memory chip at U2 has been replaced with a Windbond 128MBit standard-sized
SOIC-8 chip in order to easily use SOIC clamps to flash the device. Also
the serial header has been populated.
55 lines
1.5 KiB
Markdown
55 lines
1.5 KiB
Markdown
# SWTG018AS-A V2.0
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The following is a documentation for the unmanaged switch marked as `SWTG018AS-A V2.0`.
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It is e.g. sold under the Ampcom brand, but no branh-markings are found on the device.
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The original software is running UART on 9600 baud rate.
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Using a SOIC clamp in-board is the only method for initial installation.
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The board has a single flash chips `BS` with 4M-bit size. The front switch, switches between the two flash chips.
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These can be programed independently by using said switch - so it is e.g. possible to run the original and new firmware in parallel.
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### Label specifications
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- **Name**: 9-Ports 2.5G Ethernet Switch
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- **Ports**:
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- 8 × RJ45: 10/100/1000/2500 Mbps
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- 1 × SFP+: 1000 / 2500 / 10000 Mbps
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- **Power**: 12V DC, 1A barrel connector
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<img src="photos/SWTG018AS_A_V_2_0/label.jpg" width="300" />
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### What works
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The device is fully supported:
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- All 8 2.5GBASE-T RJ45 ports work at 10/100/1000/2500 Mbps
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- The SFP+ port supports 1G, 2.5G and 10G modules
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- LEDs work with the same indiciations as the OEM firmware
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### PCB overview
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**Board markings**
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- Top silkscreen: SWTG018AS-A-V2.0.1_19649
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Top side
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<img src="photos/SWTG018AS_A_V_2_0/pcb_top.jpg" width="300" />
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Bottom
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<img src="photos/SWTG018AS_A_V_2_0/pcb_bottom.jpg" width="300" />
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### J1, serial console
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| `J1` pin | Signal |
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| -------- | ----------- |
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| 1 | 3V3 |
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| 2 | GND |
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| 3 | RX (Input) |
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| 4 | TX (Output) |
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## Power supply
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Input power is delivered via barell plug, `12V 1A` adapter was provided.
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