MPC870 FREESCALE [Freescale Semiconductor, Inc], MPC870 Datasheet - Page 60

• Manufacturer Part Number: MPC870
• Description: Hardware Specifications
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

CPM Electrical Characteristics
60
1
2
The ratios SyncCLK/RCLK3 and SyncCLK/TCLK3 must be greater than or equal to 2/1.
SDACK is asserted whenever the SDMA writes the incoming frame DA into memory.
Num
133
134
138
139
RENA(CD3)
CLSN(CTS1)
TENA active delay (from TCLK3 rising edge)
TENA inactive delay (from TCLK3 rising edge)
CLKO1 low to SDACK asserted
CLKO1 low to SDACK negated
RCLK3
(Input)
(Input)
RxD3
(Input)
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
MPC875/MPC870 Hardware Specifications, Rev. 3.0
Figure 55. Ethernet Collision Timing Diagram
Figure 56. Ethernet Receive Timing Diagram
Table 24. Ethernet Timing (continued)
2
2
Characteristic
121
124
120
125
121
126
123
Last Bit
127
Frequencies
Min
10
10
—
—
Freescale Semiconductor
All
Max
50
50
20
20
Unit
ns
ns
ns
ns