參數(shù)資料
型號(hào): ADSP-BF518BSWZ-4F4
廠商: Analog Devices Inc
文件頁(yè)數(shù): 40/68頁(yè)
文件大小: 0K
描述: IC DSP 16/32B 400MHZ LP 176LQFP
標(biāo)準(zhǔn)包裝: 1
系列: Blackfin®
類型: 定點(diǎn)
接口: 以太網(wǎng),I²C,PPI,RSI,SPI,SPORT,UART/USART
時(shí)鐘速率: 400MHz
非易失內(nèi)存: 閃存(4Mb)
芯片上RAM: 116kB
電壓 - 輸入/輸出: 1.8V,2.5V,3.3V
電壓 - 核心: 1.30V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 176-LQFP 裸露焊盤
供應(yīng)商設(shè)備封裝: 176-LQFP-EP(24x24)
包裝: 托盤
ADSP-BF512/BF512F, BF514/BF514F, BF516/BF516F, BF518/BF518F
Rev. B
|
Page 45 of 68
|
January 2011
Up/Down Counter/Rotary Encoder Timing
10/100 Ethernet MAC Controller Timing
describe the 10/100 Ethernet MAC Controller operations.
Table 42. Up/Down Counter/Rotary Encoder Timing
Parameter
VDDEXT
1.8V Nominal
VDDEXT
2.5 V/3.3V Nominal
Min
Max
Min
Max
Unit
Timing Requirements
tWCOUNT
Up/Down Counter/Rotary Encoder Input Pulse Width
tSCLK + 1
ns
tCIS
Counter Input Setup Time Before CLKOUT Low1
1 Either a valid setup and hold time or a valid pulse width is sufficient. There is no need to resynchronize counter inputs.
97
ns
tCIH
Counter Input Hold Time After CLKOUT Low1
00
ns
Figure 30. Up/Down Counter/Rotary Encoder Timing
CLKOUT
CUD/CDG/CZM
tCIS
tCIH
tWCOUNT
Table 43. 10/100 Ethernet MAC Controller Timing: MII Receive Signal
VDDEXT
1.8V Nominal
VDDEXT
2.5 V/3.3 V Nominal
Parameter
1
Min
Max
Min
Max
Unit
Timing Requirements
tERXCLKF
ERxCLK Frequency (fSCLK = SCLK Frequency)
None
25 + 1%
None
25 + 1%
MHz
tERXCLKW
ERxCLK Width (tERxCLK = ERxCLK Period)
tERxCLK x 40%
tERxCLK x 60%
tERxCLK x 35%
tERxCLK x 65%
ns
tERXCLKIS
Rx Input Valid to ERxCLK Rising Edge (Data In Setup)
7.5
ns
tERXCLKIH
ERxCLK Rising Edge to Rx Input Invalid (Data In Hold)
7.5
ns
1 MII inputs synchronous to ERxCLK are ERxD3–0, ERxDV, and ERxER.
Figure 31. 10/100 Ethernet MAC Controller Timing: MII Receive Signal
tERXCLKIS
tERXCLKIH
ERxD3–0
ERxDV
ERxER
ERx_CLK
tERXCLKW
tERXCLK
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