Zyxel XGS1250-12
The XGS1250-12 is a 11 + 1-port Multi-Gigabit L3 switch. It has 8 Gigabit ports, three 2.5/5/10GBit Ethernet ports and one SFP+ 10GBit uplink cages.
Hardware
- RTL9302B SoC
- Macronix MX25L12833F (16MB flash)
- Winbond W613GU6MB-12 (128MB DDR3 SDRAM)
- RTL8231 expander in shift register mode for the port LEDs
- 8×GbE via RTL8218D PHY
- 3× AQR113C NBase-T PHYs
- One SFP+ uplink port
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.
JTAG
The board has an unpopulated eJTAG header J2. Similar to the GS1900-48, nSRST and nTRST are configured such that the port is disabled. The following modifications make use of the eJTAG port possible:
- 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's VIO pin is a voltage reference, tied to VCC via a 1k resistor (R153). This pin cannot be used to source current and is only provided as voltage reference.
Port numbers
The RTL9302 SoC supports 24 GbE ports, and four 10G ports.
Device ports 1-8 are switch ports 0-7. Device ports 9-12 are switch port 24-27.
| Ports | LED index | LED comment |
|---|---|---|
| 1-8 | 0 | Amber component of anti-parallel amber/lime LED. LED0 must be off. |
| 1-8 | 1 | Green component of anti-parallel amber/lime LED. LED1 must be off. |
| Ports | LED index | LED comment |
| 9-11 | 0 | Multi-LED selection. 0 chooses the lime/amber LEDs. 1 chooses the RGB LEDs. |
| 9-11 | 1 | LED0 = 0: amber, LED0 = 1: red |
| 9-11 | 2 | LED0 = 0: lime, LED0 = 1: green |
| 9-11 | 3 | LED0 = 0: (none), LED0 = 1: blue |
| Ports | LED index | LED comment |
| 12 | 0 | Blue |
| 12 | 1 | Lime |
Board details
------------------ Board Configuration ------------------ **************************** ZYXEL XGS1250-12 **************************** ============================ Board GPIO ============================ Device Pin Direction Default Current Purpose ------- ---- ---------- -------- -------- -------- INT 0 OUT 0 0 INT 1 IN 1 1 FAN_CONTROL INT 6 IN 1 0 HW_VER_BIT1 INT 7 IN 1 1 HW_VER_BIT0 INT 11 OUT 0 0 FAN_EN INT 15 OUT 0 0 TX_DIS_P11 INT 16 IN 0 1 SFP_Present_P11 INT 17 IN 0 1 SFP_LOS_P11 INT 20 IN 0 0 TX_FAULT_P11 INT 21 OUT 1 1 RESET_PHY INT 22 IN 1 1 RST_BTN_OUT ============================ Board Configuration ============================ ====== Port ================== Type Usr Phy Media Speed Duplex Attr ----------- ---- ------- ----------- -------------- -------- ------- 1000M 1 (0) 0 Copper (A) ALL Auto 0 1000M 2 (0) 1 Copper (A) ALL Auto 0 1000M 3 (0) 2 Copper (A) ALL Auto 0 1000M 4 (0) 3 Copper (A) ALL Auto 0 1000M 5 (0) 4 Copper (A) ALL Auto 0 1000M 6 (0) 5 Copper (A) ALL Auto 0 1000M 7 (0) 6 Copper (A) ALL Auto 0 1000M 8 (0) 7 Copper (A) ALL Auto 0 10G 9 (0) 24 Copper (A) ALL Auto 0 10G 10 (0) 25 Copper (A) ALL Auto 0 10G 11 (0) 26 Copper (A) ALL Auto 0 10G 12 (0) 27 Fiber (F) 10G (F) Full 0 ====== Fiber ================= Fiber Port Number: 1 ------------ Fiber Detect LPort Present MediaChg OE Status LOS Status ------ -------- --------- ---------------------- ---------------------- 11 OE None Enabled (GPIO:INT_16) Enabled (GPIO:INT_17) ------------ Fiber Optical LPort I2C DEV I2C TYPE ID Delay SCK SDA ------ -------- --------- ----- ------- ------ ------ 11 2 8 BITS 0x50 50 INT_8 INT_10 ------------ Fiber TX Disable LPort Method ------ ------ 11 GPIO(INT_15) ====== Button ================ ------------ Reset Button GPIO: INT_22 Timer: 3(sec) Action: Reboot Timer: 6(sec) Action: Restore Factory ====== Led =================== SYSTEM ON [ASIC(G)] OFF [ASIC(G)] BLINK [ASIC(G)] Port ON [ASIC(P)] ON C2 [ASIC(P)] OFF [ASIC(P)] AUTO [ASIC(P)] ====== Reset ================= Type: GPIO GPIO: INT_21 ====== WatchDog ============== Type: REG