MCF52235_07 Datasheet, PDF (39/54 Pages) Freescale Semiconductor, Inc – Microcontroller

Preliminary Electrical Characteristics
TXC
TXEN
COL
t1
t2
Figure 10. 10BASE-T SQE (Heartbeat) Timing
2.8.3 10BASE-T Jab and Unjab Timing
Table 32 and Figure 11 show the relevant 10BASE-T jab and unjab timing parameters.
Table 32. 10BASE-T Jab and Unjab Timing Parameters
Parameter
Maximum transmit time
Unjab time
1 _{Typical values are at 25°C.}
Symbol
Min
Typ¹
Max
t1
—
98
—
t2
—
525
—
Units
ms
ms
TXEN
TXD
COL
t1
t2
Figure 11. 10BASE-T Jab and Unjab Timing
MCF52235 ColdFire Microcontroller, Rev. 6
Freescale Semiconductor
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