VSC8641XKO Vitesse Semiconductor Corp, VSC8641XKO Datasheet - Page 83

• 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

Figure 19.
5.3.4
Table 72.
1. For f
Revision 4.3
August 2009
Parameter
MDC frequency
MDC cycle time
MDC time high
MDC time low
Setup to MDC rising
Hold from MDC rising
MDC rise time
MDC fall time
MDC to MDIO valid
period. For example, if f
CLK
above 1 MHz, the maximum rise time and fall time is in relation to the frequency of the MDC clock
(1)
JTAG Interface Timing
SMI Interface
Use the information in the following table when incorporating the VSC8641 device SMI
interface into your own design. For information about the SMI interface timing, see
Figure 20,
AC Characteristics for the SMI Interface
TDO
TCK
TMS
TDI
Symbol
t
f
t
t
t
t
CLK
CYC
WH
t
t
CLK
WL
t
SU
CO
H
R
F
page 84.
is 2 MHz, the maximum clock rise time and fall time is 50 ns.
Minimum
80
20
20
10
10
t
SU
Typical
400
2.5
50
50
10
t
t
CYC
CYC
Maximum
t
H
× 10%
× 10%
12.5
t
100
100
300
WH
(1)
(1)
t
CYC
Unit Condition
MHz
ns
ns
ns
ns
ns
ns
ns
t
CO
For MDC = 0 – 1 MHz
For MDC = 1 MHz – f
Time dependant on value of
external pull-up resistor on
MDIO pin
t
WL
Electrical Specifications
VSC8641 Datasheet
CLK
Page 83
(MAX)