Fat Pipe Switch Module: 10 GbE-1 GbE Fat Pipe Switch Module
KAT4000 User’s Manual 10007175-02
5-20
GPIO3–GPIO0: GPIO State
0 Logic low
1Logic high
GPIN/LED Register
The GPIN/LED register controls general purpose inputs to the PLD from the carrier. There
are also four LEDs which are under software control.
Register 5-16: GPIN/LED Register (GPLED) at 0x07
GPIO2–GPIO0: General Purpose Input
LEDCTRL: LED Mode Control
0 LEDs 2:0 indicate insufficient voltage:
LED3 PCI Express Link Up
LED2 3.3V supply low
LED1 2.5V supply low
LED0 1.0V supply low
1 LEDs 3:0 are controlled by bits 3:0
LED3–LED0: LED State
0Off
1On
76543210
GPIO2 GPIO1 GPIO0
LEDCTRL
LED3 LED2 LED1 LED0