参数资料
型号: ADSP-BF518BSWZ-4F4
厂商: Analog Devices Inc
文件页数: 43/68页
文件大小: 0K
描述: IC DSP 16/32B 400MHZ LP 176LQFP
标准包装: 1
系列: Blackfin®
类型: 定点
接口: 以太网,I²C,PPI,RSI,SPI,SPORT,UART/USART
时钟速率: 400MHz
非易失内存: 闪存(4Mb)
芯片上RAM: 116kB
电压 - 输入/输出: 1.8V,2.5V,3.3V
电压 - 核心: 1.30V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 176-LQFP 裸露焊盘
供应商设备封装: 176-LQFP-EP(24x24)
包装: 托盘
Rev. B
|
Page 48 of 68
|
January 2011
ADSP-BF512/BF512F, BF514/BF514F, BF516/BF516F, BF518/BF518F
Table 47. 10/100 Ethernet MAC Controller Timing: MII/RMII Asynchronous Signal
Parameter
Min
Max
Unit
Timing Requirements
tECOLH
COL Pulse Width High1
tETxCLK × 1.5
tERxCLK × 1.5
ns
tECOLL
COL Pulse Width Low1
tETxCLK × 1.5
tERxCLK × 1.5
ns
tECRSH
CRS Pulse Width High
2
tETxCLK × 1.5
ns
tECRSL
CRS Pulse Width Low2
tETxCLK × 1.5
ns
1 MII/RMII asynchronous signals are COL, CRS. These signals are applicable in both MII and RMII modes. The asynchronous COL input is synchronized separately to both
the ETxCLK and the ERxCLK, and must have a minimum pulse width high or low at least 1.5 times the period of the slower of the two clocks.
2 The asynchronous CRS input is synchronized to the ETxCLK, and must have a minimum pulse width high or low at least 1.5 times the period of ETxCLK.
Figure 35. 10/100 Ethernet MAC Controller Timing: Asynchronous Signal
Table 48. 10/100 Ethernet MAC Controller Timing: MII Station Management
Parameter
1
Min
Max
Unit
Timing Requirements
tMDIOS
MDIO Input Valid to MDC Rising Edge (Setup)
11.5
ns
tMDCIH
MDC Rising Edge to MDIO Input Invalid (Hold)
0
ns
Switching Characteristics
tMDCOV
MDC Falling Edge to MDIO Output Valid
25
ns
tMDCOH
MDC Falling Edge to MDIO Output Invalid (Hold)
–1.25
ns
1 MDC/MDIO is a 2-wire serial bidirectional port for controlling one or more external PHYs. MDC is an output clock whose minimum period is programmable as a multiple
of the system clock SCLK. MDIO is a bidirectional data line.
Figure 36. 10/100 Ethernet MAC Controller Timing: MII Station Management
MIICRS, COL
tECRSH
tECOLH
tECRSL
tECOLL
MDIO (INPUT)
MDIO (OUTPUT)
MDC (OUTPUT)
tMDIOS
tMDCOH
tMDCIH
tMDCOV
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