参数资料
型号: MK52N512CMD100
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 100 MHz, RISC MICROCONTROLLER, PBGA144
封装: 13 X 13 MM, MAPBGA-144
文件页数: 51/75页
文件大小: 1832K
代理商: MK52N512CMD100
MII7
MII8
Valid data
MII6
MII5
TXCLK (input)
TXD[n:0]
TXEN
TXER
Figure 23. MII transmit signal timing diagram
MII2
MII1
MII4
MII3
Valid data
RXCLK (input)
RXD[n:0]
RXDV
RXER
Figure 24. MII receive signal timing diagram
6.8.1.2 RMII signal switching specifications
The following timing specs meet the requirements for RMII style interfaces for a range of
transceiver devices.
Table 41. RMII signal switching specifications
Num
Description
Min.
Max.
Unit
EXTAL frequency (RMII input clock RMII_CLK)
50
MHz
RMII1
RMII_CLK pulse width high
35%
65%
RMII_CLK
period
RMII2
RMII_CLK pulse width low
35%
65%
RMII_CLK
period
RMII3
RXD[1:0], CRS_DV, RXER to RMII_CLK setup
4
ns
RMII4
RMII_CLK to RXD[1:0], CRS_DV, RXER hold
2
ns
RMII7
RMII_CLK to TXD[1:0], TXEN invalid
4
ns
RMII8
RMII_CLK to TXD[1:0], TXEN valid
15
ns
Peripheral operating requirements and behaviors
K52 Sub-Family Data Sheet Data Sheet, Rev. 4, 3/2011.
Freescale Semiconductor, Inc.
Preliminary
55
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