Zyxel GS1900-8

img_gs1900-8_p_600.jpg

The GS1900-8 is a 8-port Gigabit L2 switch.

  • 2x RTL8231 GPIO extender to control the port LEDs
  • Nanya NT5TU128M8HE-AC (128MB SDRAM)
  • Macronix MX25L12835F (16MB flash)

Header JP2 has a UART populated UART:

  • JP12.1: GND
  • JP12.2: TX
  • JP12.3: RX
  • JP12.4: VCC

Pins functions are marked.

zyxel_gs1900-8.jpeg

------------------ Board Configuration ------------------

****************************
 GS1900-8
****************************
============================
 Board GPIO
============================
Device  Pin  Direction  Default  Current
------- ---- ---------- -------- --------
INT     0    OUT        0        0       
INT     1    OUT        1        1       
INT     2    OUT        0        0       
INT     3    OUT        0        0       
INT     8    OUT        1        1       
INT     9    OUT        1        1       
INT     12   IN         0        0       
INT     13   OUT        1        1       
INT     14   OUT        1        1       
INT     15   OUT        1        1       
INT     16   IN         0        0       
INT     17   OUT        1        1       
INT     18   OUT        0        0       
INT     19   IN         0        0       
INT     20   OUT        1        1       
INT     21   IN         0        0       
INT     22   IN         0        0       
INT     23   OUT        1        1       
EXT     0    IN  (IN  ) 0        0       
EXT     1    IN  (IN  ) 0        0       
EXT     2    IN  (IN  ) 0        0       
EXT     3    IN  (IN  ) 0        1       
EXT     4    IN  (IN  ) 0        0       
EXT     5    OUT (OUT ) 1        1       
EXT     6    OUT (OUT ) 1        1       
EXT     7    IN  (IN  ) 0        1       
EXT     8    OUT (OUT ) 1        1       
EXT     13   OUT (OUT ) 0        0       
EXT     14   OUT (OUT ) 0        0       
EXT     15   OUT (OUT ) 0        0       
EXT     16   OUT (OUT ) 0        0       
EXT     17   OUT (IN  ) 0        0       
EXT     18   OUT (IN  ) 0        0       
EXT     22   IN  (IN  ) 0        0       
EXT     23   OUT (OUT ) 0        0       
EXT     24   OUT (OUT ) 0        0       
EXT     25   OUT (OUT ) 0        0       
EXT     26   IN  (IN  ) 0        0       
EXT     27   IN  (IN  ) 0        0       
EXT     28   IN  (IN  ) 0        0       
EXT     29   OUT (OUT ) 0        0       
EXT     30   OUT (OUT ) 0        0       
EXT     31   OUT (OUT ) 0        0       
EXT     32   IN  (IN  ) 0        0       
EXT     33   IN  (IN  ) 0        0       
EXT     34   OUT (OUT ) 1        1       

============================
 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: EXT_3 
Timer: 3(sec)  Action: Reboot
Timer: 6(sec)  Action: Restore Factory


====== Led ===================
SYS (REG)
ALARM (REG)


====== Reset =================
Type: GPIO
GPIO: EXT_5 


====== WatchDog ==============
Type: REG
  • gs1900-8.txt
  • Last modified: 2021/06/15 04:51
  • by raylynnknight