MPC8349ECVVAGDB Freescale Semiconductor, MPC8349ECVVAGDB Datasheet - Page 26

• Manufacturer Part Number: MPC8349ECVVAGDB
• Description: IC MPU POWERQUICC II 672-TBGA
• Manufacturer: Freescale Semiconductor

Specifications of MPC8349ECVVAGDB

• Processor Type: MPC83xx PowerQUICC II Pro 32-Bit
• Speed: 400MHz
• Voltage: 1.2V
• Mounting Type: Surface Mount
• Package / Case: 672-TBGA
• For Use With: MPC8349E-MITX-GP - KIT REFERENCE PLATFORM MPC8349EMPC8349E-MITXE - BOARD REFERENCE FOR MPC8349MPC8349EA-MDS-PB - KIT MODULAR DEV SYSTEM MPC8349E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

Ethernet: Three-Speed Ethernet, MII Management
8.2.2
This section describes the MII transmit and receive AC timing specifications.
8.2.2.1
Table 27
Figure 10
26
At recommended operating conditions with LV
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:
1. The symbols for timing specifications follow the pattern of t
and t
(MT) for the time t
symbol is based on two to three letters representing the clock of a particular function. For example, the subscript of t
represents the MII(M) transmit (TX) clock. For rise and fall times, the latter convention is used with the appropriate letter:
R (rise) or F (fall).
(first two letters of functional block)(reference)(state)(signal)(state)
provides the MII transmit AC timing specifications.
shows the MII transmit AC timing diagram.
MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 12
MII AC Timing Specifications
MII Transmit AC Timing Specifications
TXD[3:0]
Parameter/Condition
TX_CLK
MTX
TX_EN
TX_ER
clock reference (K) going high (H) until data outputs (D) are invalid (X). In general, the clock reference
Table 27. MII Transmit AC Timing Specifications
Figure 10. MII Transmit AC Timing Diagram
t
MTXH
DD
/OV
t
DD
MTX
of 3.3 V ± 10%.
for outputs. For example, t
(first two letters of functional block)(signal)(state)(reference)(state)
t
t
MTKHDX
t
Symbol
MTXH/
MTXF
t
MTKHDX
t
t
t
t
MTXR
MTXF
MTX
MTX
t
MTX
1
t
MTXR
Min
1.0
1.0
35
—
—
1
MTKHDX
Typ
400
symbolizes MII transmit timing
40
—
—
—
5
Freescale Semiconductor
Max
4.0
4.0
65
15
—
—
for inputs
MTX
Unit
ns
ns
ns
ns
ns
%