====== Netgear GS308Tv1 ======

{{https://www.netgear.com/media/GS308T_productcarousel_hero_image_tcm148-100609.png?200}}

The GS308Tv1 is a 8-port Gigabit L2 switch with fan-less design.

===== Hardware =====
  * [[rtl838x|RTL8380M]] SoC
  * Winbond W25Q256JVFQ (32MB flash)
  * Winbond W631GG8MB (128MB DDR3 SDRAM)
  * [[rtl8231|RTL8231]] GPIO extender to control the port LEDs, system LED and a reset button.

Power is supplied via a 12V 1A barrel connector.

A Serial header is found at J1. Pins are Vcc(3.3V, Square), TX, RX and GND. Serial connection is via 115200 baud, 8N1.

==== Board details ====


{{wiki:netgear:netgear_gs380t.jpeg?200|GS308Tv1}}

==== Pin-outs ====

=== SoC UART ===
  * J1.1: VCC, 3.3V (square pad)
  * J1.2: RX
  * J1.3: TX
  * J1.4: GND


===== Firmware =====

The switch ships with a bootloader based on Realtek's SDK for RTL83xx SoCs and Linux based on Realtek's SDK. It has a web interface for basic management, including firmware updates. 
The board identifies as RTL8393M_DEMO. But this is misleading. The SoC chip id is 83806800, which is RTL8380M_CHIP_ID according to sdk/include/hal/chipdef/chip.h in Realtek's SDK.

^ ^   Flash layout   ^^^^^^^
| **Name** | u-boot | u-boot-env | device-info | config | log | firmware1 | firmware2 |
| **Size** | 896k   | 64k        | 64k         | 1M     | 1M  | 14.5M     | 14.5M     |

==== Vendor board definition ====
<file>
------------------ Board Configuration ------------------

***********************************************************
 S350 Series 8-Port Gigabit Ethernet Smart Managed Pro Switch
***********************************************************
============================
 Board GPIO
============================
Device  Pin  Direction  Default  Current
------- ---- ---------- -------- --------
EXT     31   OUT (OUT ) 1        0       
EXT     32   OUT (OUT ) 0        1       
EXT     24   OUT (OUT ) 1        1       
INT     0    IN         0        1       
EXT     20   OUT (OUT ) 1        1       
INT     13   OUT        1        1       
EXT     25   OUT (OUT ) 1        1       
EXT     10   OUT (OUT ) 0        0       
EXT     7    IN  (IN  ) 0        0       
EXT     6    IN  (IN  ) 0        0       
EXT     14   IN  (IN  ) 0        0       
EXT     13   IN  (IN  ) 0        0       
EXT     9    OUT (OUT ) 0        0       
EXT     8    OUT (OUT ) 0        0       
EXT     11   IN  (IN  ) 0        0       
EXT     4    IN  (IN  ) 0        0       
EXT     12   IN  (IN  ) 0        0       

============================
 Board Configuration
============================
====== Port ==================
Type        Usr  Phy     Media       Speed          Duplex   Attr
----------- ---- ------- ----------- -------------- -------- -------
1000M       1    (0) 8   Copper      (A) ALL        Auto     0      
1000M       2    (0) 9   Copper      (A) ALL        Auto     0      
1000M       3    (0) 10  Copper      (A) ALL        Auto     0      
1000M       4    (0) 11  Copper      (A) ALL        Auto     0      
1000M       5    (0) 12  Copper      (A) ALL        Auto     0      
1000M       6    (0) 13  Copper      (A) ALL        Auto     0      
1000M       7    (0) 14  Copper      (A) ALL        Auto     0      
1000M       8    (0) 15  Copper      (A) ALL        Auto     0      


====== Button ================

------------ Reset Button
GPIO: INT_0 
Timer: 3(sec)  Action: Reboot
Timer: 5(sec)  Action: Restore Factory


====== Led ===================
System
  ON [GPIO(D)]
  ON C2 [GPIO(D)]
  OFF [GPIO(D)]
Port
  ON [ASIC(P)]
  ON C2 [ASIC(P)]
  OFF [ASIC(P)]
  AUTO [ASIC(P)]
PoE Max
  ON [MCU]
  OFF [MCU]
  AUTO [MCU]
PoE Port
  ON [MCU]
  ON C2 [MCU]
  OFF [MCU]
  AUTO [MCU]


====== Reset =================
Type: GPIO
GPIO: INT_13


====== WatchDog ==============
Type: REG



</file>

==== Bootloader ====

U-Boot is used as bootloader for this device, and has access to a modifiable u-boot-env partition. This can be used to store modified and custom environment variables.

Some realtek-specific commands are also available:
  * ''rtk network on'': Configure the ethernet hardware inside the bootloader (not enabled on boot).





===== References =====
  * [[https://www.netgear.com/support/product/GS308T.aspx | Product support page ]]