参数资料
型号: M52259EVB
厂商: Freescale Semiconductor
文件页数: 34/46页
文件大小: 0K
描述: BOARD EVAL FOR 52259 COLDFIRE V2
产品培训模块: ColdFire MCF5225x
标准包装: 1
系列: ColdFire®
类型: MCU
适用于相关产品: MCF52259
所含物品: 板,线缆,文档,DVD,闪光灯驱动和电源
Electrical Characteristics
2.11.1
Receive Signal Timing Specifications
The following timing specs meet the requirements for MII and 7-Wire style interfaces for a range of transceiver devices.
Table 17. Receive Signal Timing
MII Mode
Num
Characteristic
Min
Max
Unit
RXCLK frequency
25
MHz
E1
RXD[n:0], RXDV, RXER to RXCLK
setup 1
5
ns
E2
E3
E4
RXCLK to RXD[n:0], RXDV, RXER hold 1
RXCLK pulse width high
RXCLK pulse width low
5
35%
35%
65%
65%
ns
RXCLK period
RXCLK period
1
In MII mode, n = 3
RXCLK (Input)
E4
E3
RXD[n:0]
RXDV,
E1
E2
Valid Data
RXER
Figure 7. MII Receive Signal Timing Diagram
2.11.2
Transmit Signal Timing Specifications
Table 18. Transmit Signal Timing
MII Mode
Num
Characteristic
Min
Max
Unit
TXCLK to TXD[n:0], TXEN, TXER invalid
E5
E6
E7
E8
TXCLK frequency
TXCLK to TXD[n:0], TXEN, TXER valid 1
TXCLK pulse width high
TXCLK pulse width low
1
5
35%
35%
25
25
65%
65%
MHz
ns
ns
t TXCLK
t TXCLK
1
In MII mode, n = 3
TXCLK (Input)
TXD[n:0]
E6
E8
E7
E5
TXEN,
Valid Data
TXER
Figure 8. MII Transmit Signal Timing Diagram
MCF52259 ColdFire Microcontroller, Rev. 5
Freescale
34
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