80220 Datasheet, PDF (74/91 Pages) LSI Computer Systems – 100BASE-TX/10BASE-T Ethernet Media Interface Adapter

80220/80221
LINK PULSE TIMING CHARACTERISTICS continued
SYM
t₇₂
t₇₃
t₇₄
t
75
t₇₆
t₇₇
t
78
t₇₉
t₈₀
PARAMETER
FLP Receive Link Pulse
Minimum Period
Required For Clock
Pulse Detection
FLP Receive Link Pulse
Maximum Period
Required For Clock
Pulse Detection
FLP Receive Link Pulse
Minimum Period
Required For Data Pulse
Detection
FLP Receive Link Pulse
Maximum Period
Required For Data Pulse
Detection
FLP Receive Link
Pulses Required To
Detect Valid FLP Burst
FLP Receive Link Pulse
Burst Minimum Period
Required For Detection
FLP Receive Link Pulse
Burst Maximum Period
Required For Detection
FLP Receive Link
Pulses Bursts Required
To Detect AutoNegotiation
Capability
FLP Receive
Acknowledge Fail
Period
t₈₁
FLP Transmit
Renegotiate Link Fail
Period
t₈₂
NLP Receive Link
Pulse Maximum Period
Required For Detection
After FLP Negotation
Has Completed
LIMIT
MIN TYP MAX UNIT
5
25
µS
CONDITION
flp_test_min_timer
165
185
µS
flp_test_max_timer
15
47
µS
data_detect_min_timer
78
100
µS
data_detect_max_timer
17
17 Link
Pulses
5
7
mS nlp_test_min_timer
50
150 mS nlp_test_max_timer
3
3
3
Link
Pulse
1200
1500 mS
1200
1500 mS break_link_timer
750
1000 mS link_fail_inhibit_timer
74
MD400159/E