MPC8379E-RDBA Freescale Semiconductor, MPC8379E-RDBA Datasheet - Page 28

• Manufacturer Part Number: MPC8379E-RDBA
• Description: BOARD REF DESIGN MPC8379E
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MPUr

Specifications of MPC8379E-RDBA

• Contents: Board
• Memory Type: Flash, SDRAM
• Interface Type: Ethernet, USB, PCI, UART
• Board Size: 170 mm x 170 mm
• Product: Modules
• Silicon Manufacturer: Freescale
• Core Architecture: Power Architecture
• Core Sub-architecture: PowerQUICC
• Silicon Core Number: MPC83xx
• Silicon Family Name: PowerQUICC II PRO
• Rohs Compliant: Yes
• For Use With/related Products: MPC8379E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
Figure 11
8.2.3
This section describes the RMII transmit and receive AC timing specifications.
8.2.3.1
The RMII transmit AC timing specifications are in
At recommended operating conditions with LV
28
REF_CLK clock period
REF_CLK duty cycle
REF_CLK peak-to-peak jitter
Rise time REF_CLK (20%–80%)
(At Transmitter)
shows the RGMII and RTBI AC timing and multiplexing diagrams.
RXD[8:5][3:0]
RXD[7:4][3:0]
TXD[8:5][3:0]
TXD[7:4][3:0]
RMII AC Timing Specifications
GTX_CLK
RMII Transmit AC Timing Specifications
(At PHY)
(At PHY)
RX_CLK
RX_CTL
TX_CLK
TX_CTL
Parameter
MPC8379E PowerQUICC II Pro Processor Hardware Specifications, Rev. 4
Figure 11. RGMII and RTBI AC Timing and Multiplexing Diagrams
Table 29. RMII Transmit AC Timing Specifications
DD
RXD[3:0]
TXD[3:0]
RXD[4]
TXD[4]
TXEN
RXDV
of 3.3 V ± 5%.
RXD[8:5]
RXD[7:4]
TXD[8:5]
TXD[7:4]
RXERR
TXERR
RXD[9]
TXD[9]
Symbol
Table
t
t
t
RMTH
RMTR
t
RMTJ
RMT
29.
1
t
t
SKRGT
SKRGT
t
RGTH
15.0
Min
1.0
35
—
Typical
20.0
t
RGT
50
—
—
Freescale Semiconductor
t
t
SKRGT
SKRGT
Max
25.0
250
2.0
65
Unit
ns
ps
ns
%