mc68160b Freescale Semiconductor, Inc, mc68160b Datasheet - Page 20

• Manufacturer Part Number: mc68160b
• Description: Enhanced Ethernet Transceiver
• Manufacturer: Freescale Semiconductor, Inc

TP COLLISION SWITCHING
TP FULL DUPLEX SWITCHING
NOTE: Load on specified output is 20 pF to ground, unless otherwise noted.
20
Time from collision (TPRX activity caused assertion of RENA followed by assertion of
Time from end of collision (Deassertion of TENA with uninterrupted TPRX pair
TPFULDL assert to collision detect disable (See Figure 29)
TPFULDL deassert to collision detect enable
TPFULDL assert to data loop back disable (See Figure 30)
TPFULDL deassert to data loop back enable
TENA) to assertion of CLSN
activity) to deassertion of CLSN
RENA
TENA
CLSN
TPFULDL
TPFULDL
RENA
CLSN
1.5V
Characteristic
1.5V
1.5V
t 210
1.5V
t 223
t 220
Figure 29. TPTX Full Duplex Timing
Figure 30. TPTX Full Duplex Timing
Figure 28. TPTX Collision Timing
1.5V
1.5V
MC68160B
1.5V
1.5V
t 222
t 221
1.5V
1.5V
Symbol
MOTOROLA ANALOG IC DEVICE DATA
t 210
t 211
t 220
t 221
t 222
t 223
1.5V
t 211
Min
350
–
–
–
–
–
1.5V
Max
300
900
350
150
50
50
Unit
ns
ns
ns