参数资料
型号: MPC8306CVMADDCA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 266 MHz, RISC PROCESSOR, PBGA369
封装: 19 X 19 MM, 1.61 MM HEIGHT, 0.80 MM PITCH, LEAD FREE, MAPBGA-369
文件页数: 16/76页
文件大小: 474K
代理商: MPC8306CVMADDCA
MPC8306 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 0
Freescale Semiconductor
23
Ethernet and MII Management
8.2
MII and RMII AC Timing Specifications
The AC timing specifications for MII and RMII are presented in this section.
8.2.1
MII AC Timing Specifications
This section describes the MII transmit and receive AC timing specifications.
8.2.1.1
MII Transmit AC Timing Specifications
Table 20 provides the MII transmit AC timing specifications.
Table 19. MII and RMII DC Electrical Characteristics
Parameter
Symbol
Conditions
Min
Max
Unit
Supply voltage 3.3 V
OVDD
—3
3.6
V
Output high voltage
VOH
IOH = –4.0 mA
OVDD =Min
2.40
OVDD +0.3
V
Output low voltage
VOL
IOL = 4.0 mA
OVDD = Min
GND
0.50
V
Input high voltage
VIH
——
2.0
OVDD +0.3
V
Input low voltage
VIL
–0.3
0.90
V
Input current
IIN
0 V
VIN OVDD
—±5
A
Table 20. MII Transmit AC Timing Specifications
At recommended operating conditions with OVDD of 3.3 V ± 300mV.
Parameter/Condition
Symbol1
Min
Typical
Max
Unit
TX_CLK clock period 10 Mbps
tMTX
—400
ns
TX_CLK clock period 100 Mbps
tMTX
—40—
ns
TX_CLK duty cycle
tMTXH/tMTX
35
65
%
TX_CLK to MII data TXD[3:0], TX_ER, TX_EN delay
tMTKHDX
1
5
15
ns
TX_CLK data clock rise VIL(min) to VIH(max)
tMTXR
1.0
4.0
ns
TX_CLK data clock fall VIH(max) to VIL(min)
tMTXF
1.0
4.0
ns
Note:
1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)(reference)(state) for
inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tMTKHDX symbolizes MII transmit
timing (MT) for the time tMTX clock reference (K) going high (H) until data outputs (D) are invalid (X). Note that, in general,
the clock reference symbol representation is based on two to three letters representing the clock of a particular functional.
For example, the subscript of tMTX 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).
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