10/100 Non-PCI Ethernet Single Chip MAC + PHY

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Table 14.4 Link Pulse Timing Characteristics

SYM

PARAMETER

LIMIT

 

 

 

 

UNIT

CONDITIONS

MIN

 

TYP

 

MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t42

NLP Transmit Link Pulse Width

See Figure 7.8

 

nS

 

 

 

 

 

 

 

 

 

 

t43

NLP Transmit Link Pulse Period

8

 

 

 

24

mS

 

 

 

 

 

 

 

 

 

 

t44

NLP Receive Link Pulse Width Required

50

 

 

 

 

nS

 

 

For Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t45

NLP Receive Link Pulse Minimum Period

6

 

 

 

7

mS

link_test_min

 

Required For Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t46

NLP Receive Link Pulse Maximum

50

 

 

 

150

mS

link_test_max

 

Period Required For Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t47

NLP Receive Link Pulse Required To

3

 

3

 

3

Link

lc_max

 

Exit Link Fail State

 

 

 

 

 

Pulses

 

 

 

 

 

 

 

 

 

 

t48

FLP Transmit Link Pulse Width

100

 

 

 

150

nS

 

 

 

 

 

 

 

 

 

 

t49

FLP Transmit Clock Pulse to Data Pulse

55.5

 

62.5

 

69.5

μS

interval_timer

 

Period

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t50

FLP Transmit Clock Pulse to Clock Pulse

111

 

125

 

139

μS

 

 

Period

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t51

FLP Transmit Link Pulse Burst Period

8

 

 

 

22

mS

transmit_link_burst_time

 

 

 

 

 

 

 

 

r

 

 

 

 

 

 

 

 

 

t52

FLP Receive Link Pulse Width Required

50

 

 

 

 

nS

 

 

For Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t53

FLP Receive Link Pulse Minimum Period

5

 

 

 

25

μS

flp_test_min_timer

 

Required For Clock Pulse Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t54

FLP Receive Link Pulse Maximum

165

 

 

 

185

μS

flp_test_max_timer

 

Period Required For Clock Pulse

 

 

 

 

 

 

 

 

Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t55

FLP Receive Link Pulse Minimum Period

15

 

 

 

47

μS

data_detect_min_timer

 

Required For Data Pulse Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t56

FLP Receive Link Pulse Maximum

78

 

 

 

100

μS

data_detect_max_timer

 

Period Required For Data Pulse

 

 

 

 

 

 

 

 

Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t57

FLP Receive Link Pulse Burst Minimum

5

 

 

 

7

mS

nlp_test_min_timer

 

Period Required For Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t58

FLP Receive Link Pulse Burst Maximum

50

 

 

 

150

mS

nlp_test_max_timer

 

Period Required For Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t59

FLP Receive Link Pulses Bursts

3

 

3

 

3

Link

 

 

Required To Detect AutoNegotiation

 

 

 

 

 

Pulses

 

 

Capability

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SMSC LAN91C111 REV C

123

Revision 1.91 (08-18-08)

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