Micrel, Inc. KS8999 Pin Number Pin Name Type(1) 39 QL[2] Opd Factory test pin –leave open for normal operation 40 QL[3] Opd Factory test pin –leave open for normal operation 41 QL[4] Opd Factory test pin –leave open for normal operation 42 QL[5] Opd Factory test pin –leave open for normal operation 43 TXP[6] O 6 Physical transmit signal + (differential) 44 TXM[6] O 6 Physical transmit signal -(differential) 45 DOUT O Factory test output –leave open for normal operation 46 AOUT O Factory test output –leave open for normal operation 47 RXP[6] I 6 Physical receive signal + (differential) 48 RXM[6] I 6 Physical receive signal -(differential) 49 VDD_RX Pwr 2.0V for equalizer 50 GND_RX GND Ground for equalizer 51 GND_RX GND Ground for equalizer 52 VDD_RX Pwr 2.0V for equalizer 53 GND-ISO GND Analog ground 54 RXP[7] I 7 Physical receive signal + (differential) 55 RXM[7] I 7 Physical receive signal -(differential) 56 GND_TX GND 57 TXP[7] O 7 Physical transmit signal + (differential) 58 TXM[7] O 7 Physical transmit signal -(differential) 59 VDD_TX Pwr 2.0V for transmit circuitry 60 VDD_TX Pwr 2.0V for transmit circuitry 61 TXP[8] O 8 Physical transmit signal + (differential) 62 TXM[8] O 8 Physical transmit signal -(differential) 63 GND_TX GND 64 RXP[8] I 8 Physical receive signal + (differential) 65 RXM[8] I 8 Physical receive signal -(differential) 66 GND_RX GND Ground for equalizer 67 VDD_RX Pwr 2.0V for equalizer 68 FXSD[5] Ipd 5 Fiber signal detect 69 FXSD[6] Ipd 6 Fiber signal detect 70 FXSD[7] Ipd 7 Fiber signal detect 71 FXSD[8] Ipd 8 Fiber signal detect 72 GND_RCV GND Ground for clock recovery circuit 73 GND_RCV GND Ground for clock recovery circuit 74 VDD_RCV Pwr 2.0V for clock recovery circuit 75 VDD_RCV Pwr 2.0V for clock recovery circuit 76 GND_RCV GND Ground for clock recovery circuit 77 GND_RCV GND Ground for clock recovery circuit January 2005 Port Pin Function Ground for transmit circuitry Ground for transmit circuitry 9 KS8999
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