
Electrical Characteristics
MPC8535E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
51
This figure shows the RGMII and RTBI AC timing and multiplexing diagrams.
Figure 25. RGMII and RTBI AC Timing and Multiplexing Diagrams
2.9.2.7
RMII AC Timing Specifications
This section describes the RMII transmit and receive AC timing specifications.
2.9.2.7.1
RMII Transmit AC Timing Specifications
The RMII transmit AC timing specifications are in the following table.
Table 36. RMII Transmit AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
TSECn_TX_CLK clock period
tRMT
15.0
20.0
25.0
ns
TSECn_TX_CLK duty cycle
tRMTH
35
50
65
%
TSECn_TX_CLK peak-to-peak jitter
tRMTJ
—
250
ps
GTX_CLK
tRGT
tRGTH
tSKRGT_TX
TX_CTL
TXD[8:5]
TXD[7:4]
TXD[9]
TXERR
TXD[4]
TXEN
TXD[3:0]
(At Transmitter)
TXD[8:5][3:0]
TXD[7:4][3:0]
TX_CLK
(At PHY)
RX_CTL
RXD[8:5]
RXD[7:4]
RXD[9]
RXERR
RXD[4]
RXDV
RXD[3:0]
RXD[8:5][3:0]
RXD[7:4][3:0]
RX_CLK
(At PHY)
tSKRGT_RX
tSKRGT_TX