mpc8379e Freescale Semiconductor, Inc, mpc8379e Datasheet - Page 24

• Manufacturer Part Number: mpc8379e
• Description: Powerquicc Ii Pro Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
8.2
The AC timing specifications for MII, RGMII, RMII, and RTBI are presented in this section.
8.2.1
This section describes the MII transmit and receive AC timing specifications.
8.2.1.1
Table 26
24
At recommended operating conditions with LV
Supply voltage 2.5 V
Output high voltage
(LV
Output low voltage
(LV
Input high voltage
Input low voltage
Input high current
(V
Input low current
(V
Note:
1
2
TX_CLK clock period 10 Mbps
TX_CLK clock period 100 Mbps
TX_CLK duty cycle
TX_CLK to MII data TXD[3:0], TX_ER, TX_EN delay
TX_CLK data clock rise (20%–80%)
TX_CLK data clock fall (80%–20%)
Note:
IN
IN
LV
LV
DD1
DD1
= LV
= GND)
DD1
DD2
/LV
/LV
DD1
supports eTSEC 1.
supports eTSEC 2.
DD2
DD2
provides the MII transmit AC timing specifications.
MII, RGMII, RMII, and RTBI AC Timing Specifications
, V
MII AC Timing Specifications
= Min, IOH = –1.0 mA)
= Min, I
IN
MII Transmit AC Timing Specifications
Parameter
= LV
OL
DD2
MPC8379E PowerQUICC II Pro Processor Hardware Specifications, Rev. 3
= 1.0 mA)
Parameter
)
Table 25. RGMII and RTBI DC Electrical Characteristics
Table 26. MII Transmit AC Timing Specifications
DD
of 3.3 V ± 5%.
Symbol
LV
LV
V
V
V
V
I
I
DD1
DD2
OH
OL
IH
IL
IH
IL
GND – 0.3
t
Symbol
MTXH/
t
MTKHDX
2.37
2.00
–0.3
Min
–20
t
t
2.0
—
t
t
MTXR
MTXF
MTX
MTX
t
MTX
1
LV
LV
Min
DD1
DD1
1.0
1.0
35
—
—
1
/LV
/LV
Max
2.63
0.40
0.70
–20
—
DD2
DD2
Typical
+ 0.3
+ 0.3
400
40
—
—
—
5
Freescale Semiconductor
Unit
μA
μA
V
V
V
V
V
Max
4.0
4.0
—
—
65
15
Notes
1, 2
1, 2
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
%