Figure 24. fast link pulse timing parameters, 10 reset timing parameters, Figure 25. reset timing parameters – Intel 82555 User Manual

Page 55: 11 x1 clock specifications, Reset timing parameters, X1 clock specifications

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Datasheet

51

Networking Silicon — 82555

11.4.10

Reset Timing Parameters

11.4.11

X1 Clock Specifications

T33

T

FLP_BUR_NUM

Number of pulses in one burst

17

33

T34

T

FLP_BUR_WID

FLP Burst width

2

ms

T35

T

FLP_BUR_PER

FLP burst period

8

24

ms

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Figure 24. Fast Link Pulse Timing Parameters

Fast Link Pulse

T 3 1

T 3 0

T 3 0

Clock Pulse

Data Pulse

Clock Pulse

FLP Bursts

T 3 4

T 3 5

Symbol

Parameter

Conditions

Min

Typ

Max

Units

T36

T

RST_WID

Reset pulse width

500

ns

T37

T

PUP_RST

Power-up to falling edge of reset

500

µ

s

Figure 25. Reset Timing Parameters

Power Up (VCC)

RESET

T37

T36

Symbol

Parameter

Conditions

Min

Typ

Max

Units

T38

T

X1_DC

X1 duty cycle

40

60

%

T39

T

X1_PR

X1 period

±50 PPM

40

ns

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