VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux
with Integrated Clock Generation and Clock Recovery
VSC8113
Table 17: Pin Definitions
Signal
Pin
I/O
Level
Pin Description
CN1
CN2
CP2
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
Analog
Analog
Analog
+3.3V
+3.3V
+3.3V
GND
CMU external capacitor (see Figure 6, and Table 1)
CMU external capacitor (see Figure 6, and Table 1)
CMU external capacitor (see Figure 6, and Table 1)
Analog Power Supply (CMU)
Analog Power Supply (CRU)
Analog Power Supply (CRU)
Analog Ground (CRU)
Analog Ground (CRU)
Ground
VDDA
VDDA
VDDA
VSSA
VSSA
VSS
GND
GND
N/C
No connection
CRULOCKDET
VSS
O
TTL
GND
+3.3V
Lock Detect indicator for clock recovery unit
Ground
VDD
+3.3V Power Supply
N/C
No connection
N/C
No connection
N/C
No connection
CMULOCKDET
VDD
O
TTL
+3.3V
TTL
TTL
GND
TTL
TTL
GND
TTL
TTL
Lock Detect indicator for clock synthesis unit
+3.3V Power Supply
TXLSCKOUT
TXLSCKIN
VSS
O
I
Transmit byte clock out
Transmit byte clock in
Ground
TXIN7
TXIN6
VSS
I
I
Transmit input data bit7
Transmit input data bit6
Ground
TXIN5
TXIN4
N/C
I
I
Transmit input data bit5
Transmit input data bit4
No connection
TXIN3
TXIN2
VSS
I
I
TTL
TTL
GND
TTL
TTL
Transmit input data bit3
Transmit input data bit2
Ground
TXIN1
TXIN0
N/C
I
I
Transmit input data bit1
Transmit input data bit0
No connection
G52154-0, Rev 4.2
3/19/99
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 19
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