Datasheet

T2.19.2
T2.19.1
Normal Link
Pulse(s)
T2.18.1
T2.18.2
TX_EN
PMD Output
Pair
COL
TX_EN
TX_CLK
COL
T2.17.2T2.17.1
DP83640
SNOSAY8E –SEPTEMBER 2007–REVISED APRIL 2013 www.ti.com
4.21 AC Specifications — 10 Mb/s Heartbeat Timing
Parameter Description Notes Min Typ Max Units
T2.17.1 CD Heartbeat Delay All 10 Mb/s modes 1200 ns
T2.17.2 CD Heartbeat Duration All 10 Mb/s modes 1000 ns
Figure 4-17. 10 Mb/s Heartbeat Timing
4.22 AC Specifications — 10 Mb/s Jabber Timing
Parameter Description Notes Min Typ Max Units
T2.18.1 Jabber Activation Time 85 ms
T2.18.2 Jabber Deactivation Time 500 ms
Figure 4-18. 10 Mb/s Jabber Timing
4.23 AC Specifications — 10BASE-T Normal Link Pulse Timing
Parameter Description Notes Min Typ
(1)
Max Units
T2.19.1 Pulse Width 100 ns
T2.19.2 Pulse Period 16 ms
(1) These specifications represent transmit timings.
Figure 4-19. 10BASE-T Normal Link Pulse Timing
30 Electrical Specifications Copyright © 2007–2013, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: DP83640