參數(shù)資料
型號(hào): ADSP-BF548MBBCZ-5M
廠(chǎng)商: Analog Devices Inc
文件頁(yè)數(shù): 72/100頁(yè)
文件大?。?/td> 0K
描述: IC DSP 533MHZ W/DDR 400CSPBGA
標(biāo)準(zhǔn)包裝: 1
系列: Blackfin®
類(lèi)型: 定點(diǎn)
接口: CAN,SPI,SSP,TWI,UART,USB
時(shí)鐘速率: 533MHz
非易失內(nèi)存: 外部
芯片上RAM: 260kB
電壓 - 輸入/輸出: 2.50V,3.30V
電壓 - 核心: 1.25V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 400-LFBGA,CSPBGA
供應(yīng)商設(shè)備封裝: 400-CSPBGA(17x17)
包裝: 托盤(pán)
配用: ADSP-3PARCBF548M01-ND - MODULE BOARD BF548
ADSP-3PARCBF548E02-ND - KIT DEV STARTER BF548
ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
Rev. C
|
Page 73 of 100
|
February 2010
HOSTDP A/C Timing-Host Write Cycle
Table 55 and Figure 46 describe the HOSTDP A/C host write
cycle timing requirements.
Table 55. Host Write Cycle Timing Requirements
Parameter
Min
Max
Unit
Timing Requirements
tSADWRL
HOST_ADDR/HOST_CE Setup Before HOST_WR Falling Edge
4
ns
tHADWRH
HOST_ADDR/HOST_CE Hold After HOST_WR Rising Edge
2.5
ns
tWRWL
HOST_WR Pulse Width Low (ACK Mode)
tDRDYWRL + tRDYPRD + tDWRHRDY
ns
HOST_WR Pulse Width Low (INT Mode)
1.5
× t
SCLK + 8.7
ns
tWRWH
HOST_WR Pulse Width High or Time Between HOST_WR Rising Edge
and HOST_RD Falling Edge
2
× t
SCLK
ns
tDWRHRDY
HOST_WR Rising Edge Delay After HOST_ACK Rising Edge (ACK Mode) 0
ns
tHDATWH
HOST_D15–0 Hold After HOST_WR Rising Edge
2.5
ns
tSDATWH
HOST_D15–0 Setup Before HOST_WR Rising Edge
3.5
ns
Switching Characteristics
tDRDYWRL
HOST_ACK Falling Edge After HOST_CE Asserted (ACK Mode)
11.25
ns
tRDYPWR
HOST_ACK Low Pulse-Width for Write Access (ACK Mode)
NM
1
ns
1 NM (not measured)—This parameter is based on tSCLK. It is not measured because the number of SCLK cycles for which HOST_ACK remains low depends on the Host DMA
FIFO status. This is system design dependent.
In Figure 46, HOST_DATA is HOST_D0–D15.
Figure 46. HOSTDP A/C- Host Write Cycle
HOST_WR
HOST_ACK
HOST_DATA
tSADWRL
tHADWRH
tDWRHRDY
tRDYPWR
tDRDYWRL
tSDATWH
HOST_ADDR
HOST_CE
tWRWL
tWRWH
tHDATWH
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