參數(shù)資料
型號: ADV202BBCZRL-150
廠商: Analog Devices Inc
文件頁數(shù): 3/40頁
文件大?。?/td> 0K
描述: IC CODEC VIDEO 150MHZ 144CSPBGA
標(biāo)準(zhǔn)包裝: 1,000
類型: JPEG2000 視頻編解碼器
分辨率(位): 16 b
三角積分調(diào)變:
電壓 - 電源,模擬: 1.5V,3.3V
電壓 - 電源,數(shù)字: 1.5V,3.3V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 144-BGA,CSPBGA
供應(yīng)商設(shè)備封裝: 144-CSPBGA(13x13)
包裝: 帶卷 (TR)
Data Sheet
ADV202
Rev. D | Page 11 of 40
DREQ/DACK DMA MODE—SINGLE FIFO READ OPERATION
Table 7.
Parameter
Description
Min
Typ
Max
Unit
DREQPULSE
DREQ Pulse Width1
1
15
JCLK cycles2
t
DREQ
DACK Assert to Subsequent DREQ Delay
2.5
3.5 × JCLK + 7.5 ns
JCLK cycles
t
RDSU
RD to DACK Setup
0
ns
t
RD
DACK to Data Valid
2.5
11
ns
t
HD
Data Hold
1.5
ns
DACKLO
DACK Assert Pulse Width
2
JCLK cycles
DACKHI
DACK Deassert Pulse Width
2
JCLK cycles
t
RDHD
RD Hold After DACK Deassert
0
ns
RDFSRQ
RD Assert to FSRQ Deassert (FIFO Empty)
1.5
2.5 × JCLK + 7.5 ns
JCLK cycles
t
DREQRTN
DACK to DREQ Deassert (DR × PULS = 0)
2.5
3.5 × JCLK + 7.5 ns
JCLK cycles
1 Applies to assigned DMA channel, if EDMOD0 or EDMOD1[14:11] is programmed to a nonzero value.
2 For a definition of JCLK, see the PLL section.
04723-
018
RD
DACK
DREQ
HDATA
0
1
2
tRD
tHD
DREQPULSE
tDREQ
tRDSU
tRDHD
DACKHI
DACKLO
Figure 9. Single Read for DREQ/DACK DMA Mode for Assigned DMA Channel
(EDMOD0/EDMOD1[14:11] Not Programmed to a Value of 0000)
04723-
019
RD
DACK
DREQ
HDATA
0
1
2
tRD
tHD
tDREQRTN
tRDSU
tRDHD
DACKHI
DACKLO
Figure 10. Single Read for DREQ/DACK DMA Mode for Assigned DMA Channel
(EDMOD0/EDMOD1[14:11] Programmed to a Value of 0000)
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