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| 型号： | MPC8548VUAVGA |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 1500 MHz, MICROPROCESSOR, CBGA783 |
| 封装： | 29 X 29 MM, 1 MM PITCH, FLIP CHIP, LEAD FREE, CERAMIC, BGA-783 |
| 文件页数： | 78/142页 |
| 文件大小： | 1504K |
| 代理商： | MPC8548VUAVGA |
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MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
40
Freescale Semiconductor
Ethernet Management Interface Electrical Characteristics
9.2
MII Management AC Electrical Specifications
Table 37 provides the MII management AC timing specifications.
Input high current (OVDD = Max, VIN
1 = 2.1 V)
IIH
—40
μA
Input low current (OVDD = Max, VIN = 0.5 V)
IIL
–600
—
μA
Note:
1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.
Table 37. MII Management AC Timing Specifications
At recommended operating conditions with OVDD is 3.3 V ± 5%.
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
Notes
MDC frequency
fMDC
0.72
2.5
8.3
MHz
2, 3,4
MDC period
tMDC
120.5
—
1389
ns
—
MDC clock pulse width high
tMDCH
32
—
ns
—
MDC to MDIO valid
tMDKHDV
16
× tCCB
——
ns
5
MDC to MDIO delay
tMDKHDX
(16 *
tptb_clk*8)-3
—(16 *
tptb_clk*8)+3
ns
5
MDIO to MDC setup time
tMDDVKH
5—
—
ns
—
MDIO to MDC hold time
tMDDXKH
0—
—
ns
—
MDC rise time
tMDCR
—
10
ns
4
MDC fall time
tMDHF
—10
ns
4
Notes:
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, tMDKHDX symbolizes management data timing (MD) for the time tMDC
from clock reference (K) high (H) until data outputs (D) are invalid (X) or data hold time. Also, tMDDVKH symbolizes management data timing
(MD) with respect to the time data input signals (D) reach the valid state (V) relative to the tMDC clock reference (K) going to the high (H) state
or setup time. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
2. This parameter is dependent on the eTSEC system clock speed, which is half of the Platform Frequency (fCCB). The actual ECn_MDC output
clock frequency for a specific eTSEC port can be programmed by configuring the MgmtClk bit field of
MPC8548E’s MIIMCFG register, based
on the platform (CCB) clock running for the device. The formula is: Platform Frequency (CCB)/(2*Frequency Divider determined by
MIICFG[MgmtClk] encoding selection). For example, if MIICFG[MgmtClk] = 000 and the platform (CCB) is currently running at 533 MHz, fMDC
= 533/(2*4*8) = 533/64 = 8.3 MHz. That is, for a system running at a particular platform frequency (fCCB), the ECn_MDC output clock
frequency can be programmed between maximum fMDC = fCCB/64 and minimum fMDC = fCCB/448. Refer to MPC8572E reference manual’s
MIIMCFG register section for more detail.3.The maximum ECn_MDC output clock frequency is defined based on the maximum platform
frequency for
MPC8548E (533 MHz) divided by 64, while the minimum ECn_MDC output clock frequency is defined based on the minimum
platform frequency for
MPC8548E (333 MHz) divided by 448, following the formula described in Note 2 above.
4. Guaranteed by design.
5. tCCB is the platform (CCB) clock period.
Table 36. MII Management DC Electrical Characteristics (continued)
Parameter
Symbol
Min
Max
Unit
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相关代理商/技术参数 |
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|---|---|
| MPC8548VUAVH | 制造商:Freescale Semiconductor 功能描述:MPU RISC 32BIT CMOS 1.5GHZ 1.8V/2.5V/3.3V 783FCCBGA - Bulk |
| MPC8548VUAVK | 制造商:Freescale Semiconductor 功能描述:PQ38 8548 PB-FREE - Bulk |
| MPC8555CDS | 功能描述:开发板和工具包 - 其他处理器 CDS EVAL BOARD FOR 8555 RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压: |
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| MPC8555CPXAJD | 功能描述:微处理器 - MPU PQ 37 LITE 8555 RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
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