mpc850de Freescale Semiconductor, Inc, mpc850de Datasheet - Page 52

• Manufacturer Part Number: mpc850de
• Description: Mpc850 Rev. A/b/c Communications Controller
• Manufacturer: Freescale Semiconductor, Inc

Ethernet Electrical Specifications
8.7
Table 20 provides the Ethernet timings as shown in Figure 53 to Figure 55.
52
Num
120
121
122
123
124
125
126
127
128
129
130
131
132
Ethernet Electrical Specifications
CLSN width high
RCLKx rise/fall time (x = 2, 3 for all specs in this table)
RCLKx width low
RCLKx clock period
RXDx setup time
RXDx hold time
RENA active delay (from RCLKx rising edge of the last data bit)
RENA width low
TCLKx rise/fall time
TCLKx width low
TCLKx clock period
TXDx active delay (from TCLKx rising edge)
TXDx inactive delay (from TCLKx rising edge)
MPC850 (Rev. A/B/C) Hardware Specifications
1
1
Figure 52. HDLC Bus Timing Diagram
Characteristic
Table 20. Ethernet Timing
100.00
All Frequencies
40.00
40.00
80.00
20.00
10.00
40.00
99.00
10.00
10.00
5.00
Min
—
—
120.00
101.00
15.00
15.00
50.00
50.00
Max
—
—
—
—
—
—
—
MOTOROLA
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns