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VSC8658 Datasheet(PDF) 77 Page - Microsemi Corporation

Part # VSC8658
Description  Octal 10/100/1000BASE-T PHY and 100BASEFX/1000BASE-X SerDes
PDF  95 Pages
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

VSC8658 Datasheet(HTML) 77 Page - Microsemi Corporation

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Electrical Specifications
VMDS-10242 VSC8658 Datasheet Revision 4.1
69
Figure 21 •
Reset Timing
6.3.6
Serial LEDs
The following table provides specifications for the device serial LEDs. The illustration shows the LED
timing.
Wait time between Soft
Reset (MII Register 0.15)
de-assert and access to
the SMI interface
tSREG_WAIT
4
300
200
200
µs
µs
ms
ms
Registers 22.9 = 1, 21E.14 = 0
Registers 22.9 = 0, 21E.14 = 0
Registers 22.9 = 0, 21E.14 = 1
Registers 22.9 = 1, 21E.14 = 1
Table 79 •
AC Characteristics for Serial LEDs
Parameter
Symbol
Minimum
Maximum
Unit
LED_CLK cycle time
tCYC
1µs
Pause between LED bit sequences
tPAUSE
25
ms
LED_CLK to LED_DATA
tCO
1ns
Table 78 •
AC Characteristics for Device Reset (continued)
Parameter
Symbol
Minimum
Maximum
Unit Condition
NRESET
tRESET
REFCLK
tWAIT
MDIO
Soft Reset
(MII Register 0.15)
tSREG_RESET
tSREG_WAIT
Undefined State
MDC
NSRESET
tSRESET_ASSERT
tSWAIT
tSRESET_DEASSERT



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