Datasheet

Micrel, Inc. KS8999
January 2005
8
KS8999
Pin Description
Pin Number Pin Name Type
(1)
Port Pin Function
1 VDD_RX Pwr 2.0V for equalizer
2 GND_RX GND Ground for equalizer
3 GND_RX GND Ground for equalizer
4 VDD_RX Pwr 2.0V for equalizer
5 RXP[3] I 3 Physical receive signal + (differential)
6 RXM[3] I 3 Physical receive signal - (differential)
7 AOUT2 O Factory test output
8 DOUT2 O Factory test output
9 TXP[3] O 3 Physical transmit signal + (differential)
10 TXM[3] O 3 Physical transmit signal - (differential)
11 QH[5] Opd Factory test pin –leave open for normal operation
12 QH[4] Opd Factory test pin –leave open for normal operation
13 QH[3] Opd Factory test pin –leave open for normal operation
14 QH[2] Opd Factory test pin –leave open for normal operation
15 GND_TX GND Ground for transmit circuitry
16 VDD_TX Pwr 2.0V for transmit circuitry
17 VDD_TX Pwr 2.0V for transmit circuitry
18 GND-ISO GND Analog ground
19 TXP[4] O 4 Physical transmit signal + (differential)
20 TXM[4] O 4 Physical transmit signal - (differential)
21 GND_TX GND Ground for transmit circuitry
22 RXP[4] I 4 Physical receive signal + (differential)
23 RXM[4] I 4 Physical receive signal - (differential)
24 GND_RX GND Ground for equalizer
25 VDD_RX Pwr 2.0V for equalizer
26 ISET Set physical transmit output current
27 GND-ISO GND Analog ground
28 VDD_RX Pwr 2.0V for equalizer
29 GND_RX GND Ground for equalizer
30 RXP[5] I 5 Physical receive signal + (differential)
31 RXM[5] I 5 Physical receive signal - (differential)
32 GND_TX GND Ground for transmit circuitry
33 TXP[5] O 5 Physical transmit signal + (differential)
34 TXM[5] O 5 Physical transmit signal - (differential)
35 GND-ISO GND Analog ground
36 VDD_TX Pwr 2.0V for transmit circuitry
37 VDD_TX Pwr 2.0V for transmit circuitry
38 GND_TX GND Ground for transmit circuitry