VSC8641XKO Vitesse Semiconductor Corp, VSC8641XKO Datasheet - Page 110

• Manufacturer Part Number: VSC8641XKO
• Description: IC PHY 10/100/1000 100-LQFP
• Manufacturer: Vitesse Semiconductor Corp
• Type: PHY Transceiverr

Specifications of VSC8641XKO

• Number Of Drivers/receivers: 1/1
• Protocol: Gigabit Ethernet
• Voltage - Supply: 2.5V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Case: TQFP
• Dc: 07+
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 907-1031

Table 94.
6.6.6
Table 95.
Revision 4.3
August 2009
Miscellaneous Pins (continued)
Power Supply
The following table lists the device power supply pins.
Power Supply Pins
1. Exposed pad on the bottom of the package.
Pin
67
69, 70
1, 2,
24, 51,
52, 72,
73, 74,
75, 76,
77, 78,
79, 96,
97, 98,
99, 100
Pin
3, 4, 61, 82, 88, 93
68
15
23, 32, 38, 53
7, 8, 19, 20, 55
83
25, PAD
(1)
Name
REG_EN
REG_OUT
NC
Name
VDD33
VDDREG
VDDIOMICRO
VDDIOMAC
VDD12
VDD12A
VSS
Type
A
NC
BIAS
I
Description
Regulator enable. Active high input enables the on-chip
switching regulator and generates a 1.2 V supply voltage.
Regulator output. When REG_EN is enabled, REG_OUT
supplies a 1.2 V supply that has been regulated from the
3.3 V supply. When connecting to the 1.2 V supply pins,
additional requirements are a 4.7 µH to 5.1 μH inductor in
series as well as 10 µF and 1 µF capacitors to ground. The
on-chip switching regulator is optional, and 1.2 V power
can be supplied externally.
No connect. Do not connect them together or to ground.
Leave these pins unconnected (floating).
Type
3.3 V
3.3 V
3.3 V
2.5 V
3.3 V
2.5 V
1.2 V
1.2 V
0 V
Description
General 3.3 V supply.
On-chip switching regulator 3.3 V supply.
I/O micro power supply.
I/O MAC power supply.
Internal digital core voltage.
1.2 V analog power requiring additional PCB
power supply filtering.
General device ground.
VSC8641 Datasheet
Pin Descriptions
Page 110