Datasheet KSZ8993 (Microchip) - 6

KS8993 Micrel
Pin Description Pin Number Pin Name Type(Note 1) Port Pin Function
1 GND_ANA GND Analog ground 2 MUX[2] I Factory test pin 3 MUX[1] I Factory test pin 4 GND_RX[1] GND 1 Ground for receiver 5 RXP[1] I 1 Physical receive signal + (differential) 6 RXM[1] I 1 Physical receive signal - (differential) 7 VDD_RX[1] Pwr 1 2.5V for receiver 8 VREF[1] O 1 Reference voltage for transmit transformer center tap 9 TXP[1] O 1 Physical transmit signal + (differential) 10 TXM[1] O 1 Physical transmit signal - (differential) 11 GND_TX[1] GND 1 Ground for transmit circuitry 12 VDD_TX[1] Pwr 1 2.5V for transmit circuitry 13 VDD_BG Pwr 2.5V for analog circuitry 14 ISET O Set physical transmit output current 15 GND_BG GND Ground for analog circuitry 16 GND_PLL GND Ground for phase locked loop circuitry 17 VDD_PLL Pwr 2.5V for phase locked loop circuitry 18 GND_RX[2] GND 2 Ground for receiver 19 RXP[2] I 2 Physical receive signal + (differential) 20 RXM[2] I 2 Physical receive signal - (differential) 21 VDD_RX[2] Pwr 2 2.5V for receiver 22 VREF[2] O 2 Reference voltage for transmit transformer center tap 23 TXP[2] O 2 Physical transmit signal + (differential) 24 TXM[2] O 2 Physical transmit signal - (differential) 25 GND_TX[2] GND 2 Ground for transmit circuitry 26 VDD_TX[2] Pwr 2 2.5V for transmit circuitry 27 VDD_TX[3] Pwr 3 2.5V for transmit circuitry 28 GND_TX[3] GND 3 Ground for transmit circuitry 29 TXP[3] O 3 Physical transmit signal + (differential) 30 TXM[3] O 3 Physical transmit signal - (differential) 31 VREF[3] O 3 Reference voltage for transmit transformer center tap 32 VDD_RX[3] Pwr 3 2.5V for receiver 33 RXP[3] I 3 Physical receive signal + (differential) 34 RXM[3] I 3 Physical receive signal - (differential) 35 GND_RX[3] GND 3 Ground for receiver 36 FXSD[2] I 2 Fiber signal detect 37 FXSD[3] I 3 Fiber signal detect 38 GND_ANA GND Analog ground
Note 1.
Pwr = power supply GND = ground I = input O = output I/O = bi-directional KS8993 6 May 2005