VSC8641XKO Vitesse Semiconductor Corp, VSC8641XKO Datasheet - Page 81

• 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 67.
5.3
5.3.1
Table 68.
Table 69.
5.3.2
Table 70.
Revision 4.3
August 2009
Current Consumption: Reset State (continued)
AC Characteristics
The AC specifications are grouped according to specific device pins and associated
timing characteristics.
Reference Clock Input
The following table lists the specifications for the reference clock input frequency
including various frequencies, duty cycle, and accuracy.
AC Characteristics for REFCLK Input
When using the 25 MHz crystal clock input option, the additional specifications in the
following table are required.
AC Characteristics for REFCLK Input with 25 MHz Clock Input
Clock Output
The specifications in the following table show the AC characteristics for the clock output
of the VSC8641 device.
AC Characteristics for the CLKOUT Pin
Parameter
Current with V
Current with V
Current with V
Total power at 3.3 V
Parameter
Frequency with 25 MHz input
Frequency with 125 MHz input
Frequency accuracy
Duty cycle
Rise time with 25 MHz input (20% to 80%)
Rise time with 125 MHz input (20% to
80%)
Parameter
Crystal parallel load capacitance
Crystal equivalent series resistance
Parameter
CLKOUT frequency
DDIOMAC
DDIOMICRO
DDIOMICRO
at 2.5 V
Symbol
at 3.3 V
at 2.5 V
f
CLK
Minimum
I
I
VDDIOMICRO
VDDIOMICRO
I
Symbol
VDDIOMAC
Symbol
Minimum
f
%
f
CLK125
t
CLK25
f
t
R125
Typical
TOL
DUTY
R25
125.00
18
Minimum
Typical
Maximum
Typical
40
23.1
0
0
0
10
Typical Maximum
Electrical Specifications
125
Maximum
25
Unit Condition
MHz
VSC8641 Datasheet
20
30
Unit
mW
mA
mA
mA
125 MHz output
clock
50
60
4
1
Unit
pF
Ω
Page 81
Unit
ppm
MHz
MHz
%
ns
ns