Datasheet

MPC5200 Data Sheet, Rev. 4
Electrical and Thermal Characteristics
Freescale Semiconductor46
Figure 31. Ethernet Timing Diagram—MII Serial Management
3.3.10 USB
Table 34. MII Serial Management Channel Signal Timing
Sym Description Min Max Unit SpecID
M9 MDC falling edge to MDIO output delay 0 25 ns A9.9
M10 MDIO (input) to MDC rising edge setup 10 — ns A9.10
M11 MDIO (input) to MDC rising edge hold 10 — ns A9.11
M12 MDC pulse width high
1
NOTES:
1
MDC is generated by MPC5200 with a duty cycle of 50% except when MII_SPEED in the FEC MII_SPEED control
register is changed during operation. See the MPC5200 User Manual [1].
160 — ns A9.12
M13 MDC pulse width low
(1)
160 — ns A9.13
M14 MDC period
2
2
The MDC period must be set to a value of less then or equal to 2.5 MHz (to be compliant with the IEEE MII
characteristic) by programming the FEC MII_SPEED control register. See the MPC5200 User Manual [1].
400 — ns A9.14
Table 35. Timing Specifications—USB Output Line
Sym Description Min Max Units SpecID
1 USB Bit width
1
NOTES:
1
Defined in the USB config register, (12 Mbit/s or 1.5 Mbit/s mode).
83.3 667 ns A10.1
2 Transceiver enable time 83.3 667 ns A10.2
3 Signal falling time — 7.9 ns A10.3
4 Signal rising time — 7.9 ns A10.4
M13
M12
M11
MDC (Output)
MDIO (Input)
MDIO (Output)
M10
M9
M14