LAN91C111 Datasheet, PDF (116/125 Pages) SMSC Corporation – 10/100 Non-PCI Ethernet Single Chip MAC + PHY

LAN91C111
TABLE 14-4: LINK PULSE TIMING CHARACTERISTICS
SYM
t42
t43
t44
t45
t46
t47
t48
t49
t50
t51
t52
t53
t54
t55
t56
t57
t58
t59
Parameter
Limit
Unit
MIN TYP MAX
NLP Transmit Link Pulse Width
See Figure 7-8
NLP Transmit Link Pulse Period
8
24
NLP Receive Link Pulse Width Required 50
For Detection
NLP Receive Link Pulse Minimum Period 6
7
Required For Detection
NLP Receive Link Pulse Maximum
50
150
Period Required For Detection
NLP Receive Link Pulse Required To
3
Exit Link Fail State
3
3
FLP Transmit Link Pulse Width
100
150
FLP Transmit Clock Pulse to Data Pulse 55.5 62.5 69.5
Period
FLP Transmit Clock Pulse to Clock Pulse 111
Period
125 139
FLP Transmit Link Pulse Burst Period 8
22
nS
mS
nS
mS
mS
Link
Pulses
nS
S
S
mS
FLP Receive Link Pulse Width Required 50
For Detection
FLP Receive Link Pulse Minimum Period 5
Required For Clock Pulse Detection
FLP Receive Link Pulse Maximum
165
Period Required For Clock Pulse
Detection
FLP Receive Link Pulse Minimum Period 15
Required For Data Pulse Detection
FLP Receive Link Pulse Maximum
78
Period Required For Data Pulse
Detection
FLP Receive Link Pulse Burst Minimum 5
Period Required For Detection
FLP Receive Link Pulse Burst Maximum 50
Period Required For Detection
FLP Receive Link Pulses Bursts
3
3
Required To Detect Auto-Negotiation
Capability
nS
25
S
185 S
47
S
100 S
7
mS
150 mS
3
Link
Pulses
Condition
link_test_min
link_test_max
lc_max
interval_timer
transmit_link_burst_time
r
flp_test_min_timer
flp_test_max_timer
data_detect_min_timer
data_detect_max_timer
nlp_test_min_timer
nlp_test_max_timer
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DS00002276A-page 117