VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Datasheet

VSC8166

2.488 Gbit/sec

1:16 SONET/SDH Demux with Clock Recovery

Page 12

© VITESSE SEMICONDUCTOR CORPORATION

G52252-0, Rev 3.0

741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896

11/9/99

Note: No connect (NC) pins must be left unconnected, or floating. Connecting any of these pins to either the positive or negative

power supply rails may cause improper operation or failure of the device; or in extreme cases, cause permanent damage

to the device.

107

VCC

—

3.3V typ.

Positive power supply pin

108

D0+

O

LVPECL

Low speed differential parallel data, true

109

D0-

O

LVPECL

Low speed differential parallel data, compliment

110

VEE

—

GND typ.

Negative power supply pin

111

CLK16O-

O

LVPECL

Parallel clock output, complement

112

CLK16O+

O

LVPECL

Parallel clock output, true

113

VCC

—

3.3V typ.

Positive power supply pin

114

CLK32O-

O

LVPECL

Divided Parallel clock output, complement

115

CLK32O+

O

LVPECL

Divided Parallel clock output, true

116

NC

—

—

No connect, leave unconnected

117

NOREF

O

TTL

No reference clock output. Active high for REFCLK missing or

severely out of tolerance.

118

VCCT

—

3.3V typ.

Positive power supply pin (TTL)

119

VEEY

—

GND typ.

Negative power supply pin (TTL)

120

LOL

O

TTL

Loss of lock indicator.

121

NC

—

—

No connect, leave unconnected

122

VEE

—

GND typ.

Negative power supply pin

123

VCC

—

3.3V typ.

Positive power supply pin

124

NC

—

—

No connect, leave unconnected

125

NC

—

—

No connect, leave unconnected

126

VEE

—

GND typ.

Negative power supply pin

127

VEE

—

GND typ.

Negative power supply pin

128

VCC

—

3.3V typ.

Positive power supply pin

Table 3: Package Pin Identification

Pin #

Name

I/O

Level

Description