VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
2.48832Gb/s 16:1 SONET/SDH
Transceiver with Integrated Clock Generator
VSC8140
Package Pin Descriptions
Table 5: Package Pin Identification - 208 BGA
Pin #
Name
I/O
Level
Description
B17
B16
B15
C14
D13
A16
B14
B13
A14
A13
D11
C11
B11
D10
B10
A10
B9
OVERFLOW
VEET
O
—
—
—
I
TTL
FIFO overflow indication
TTL VEE power supply
GND typ.
VCCT
+3.3V typ. TTL VCC power supply
GND typ. Negative power supply
VEE
HSDREF
VEE
0V->3.3V High-speed data input termination voltage reference
GND typ. Negative power supply
—
I
RXIN+
RXIN-
HS
HS
High-speed data input, true
I
High-speed data input, complement
VCC
—
—
—
—
I
3.3V typ. Positive power supply
GND typ. Negative power supply
GND typ. Negative power supply
3.3V typ. Positive power supply
VEE
VEE
VCC
RXCLKIN-
HSCLKREF
RXCLKIN+
VCC
HS
High-speed clock input, complement
I
0V->3.3V High-speed clock input termination voltage reference
I
HS
High-speed clock input, true
—
—
—
O
3.3V typ. Positive power supply
3.3V typ. Positive power supply
3.3V typ. Positive power supply
VCC
D9
VCC
A9
TXOUT+
TXOUT-
VCC
HS
HS
High-speed data output, true
A8
O
High-speed data output, complement
C8
—
—
—
—
—
—
O
3.3V typ. Positive power supply
GND typ. Negative power supply
GND typ. Negative power supply
GND typ. Negative power supply
3.3V typ. Positive power supply
3.3V typ. Positive power supply
D8
VEE
A7
VEE
A6
VEE
D7
VCC
A5
VCC
A4
TXCLKOUT+
TXCLKOUT-
VCC
HS
HS
High-speed clock output, true
A3
O
High-speed clock output, complement
B4
—
—
—
I
3.3V typ. Positive power supply
D5
VEEP_CLK
VEEP_CLK
VEE_PWRDN
VCC
GND typ. HS clock VEE power supply (tie to VCC for power down)
GND typ. HS clock VEE power supply (tie to VCC for power down)
GND typ. HS clock VEE power supply (tie to VCC for power down)
3.3V typ. Positive power supply
A2
A1
C4
—
Page 24
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
G52251-0, Rev. 4.0
9/6/00
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
