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zyxel_xgs1250-12 [2021/10/30 13:39] – Create page svanheule | zyxel_xgs1250-12 [2022/04/25 16:00] – [JTAG] JTAG works with the listed modifications svanheule | ||
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===== Hardware ===== | ===== Hardware ===== | ||
- | * [[rtl930x|RTL9302B]] SoC | + | * [[rtl93xx|RTL9302B]] SoC |
* Macronix MX25L12833F (16MB flash) | * Macronix MX25L12833F (16MB flash) | ||
* Winbond W613GU6MB-12 (128MB DDR3 SDRAM) | * Winbond W613GU6MB-12 (128MB DDR3 SDRAM) | ||
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Power is supplied via a 12V 2A standard barrel connector. At the right side behind the grid is UART serial connector. | Power is supplied via a 12V 2A standard barrel connector. At the right side behind the grid is UART serial connector. | ||
A Serial header can be connected to from the outside of the switch trough the airvents with a standard 2.54mm header. Pins are from top to bottom Vcc(3.3V), TX, RX and GND. Serial connection is via 115200 baud, 8N1. | A Serial header can be connected to from the outside of the switch trough the airvents with a standard 2.54mm header. Pins are from top to bottom Vcc(3.3V), TX, RX and GND. Serial connection is via 115200 baud, 8N1. | ||
+ | |||
+ | {{wiki: | ||
+ | {{wiki: | ||
+ | {{wiki: | ||
+ | |||
+ | ==== JTAG ==== | ||
+ | |||
+ | The board has an unpopulated eJTAG header J2. Similar to the [[GS1900-48]], | ||
+ | * Add jumper across R155 to connect the nSRST pin. | ||
+ | * Move R156 to R151 to change the permanent pull-down into a pull-up. | ||
+ | * (optional) Modify the heatsink and add a 2×7 pin header (see picture) | ||
+ | |||
+ | The header' | ||
+ | |||
+ | {{wiki: | ||
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< | < | ||
+ | ------------------ Board Configuration ------------------ | ||
+ | |||
+ | **************************** | ||
+ | ZYXEL XGS1250-12 | ||
+ | **************************** | ||
+ | ============================ | ||
+ | Board GPIO | ||
+ | ============================ | ||
+ | Device | ||
+ | ------- ---- ---------- -------- -------- -------- | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | INT | ||
+ | |||
============================ | ============================ | ||
Board Configuration | Board Configuration | ||
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* [[https:// | * [[https:// | ||
- | {{tag> | + | {{tag> |