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DM385 参数 Datasheet PDF下载

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型号: DM385
PDF下载: 下载PDF文件 查看货源
内容描述: DM385和DM388 DaVincia ? ¢数字媒体处理器 [DM385 and DM388 DaVinci™ Digital Media Processor]
分类和应用:
文件页数/大小: 280 页 / 2479 K
品牌: TI [ TEXAS INSTRUMENTS ]
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DM385, DM388  
www.ti.com  
SPRS821D MARCH 2013REVISED DECEMBER 2013  
8.8.2.3 GPMC/NAND Flash and ELM Interface Timing  
Table 8-31. Timing Requirements for GPMC/NAND Flash Interface  
(see Figure 8-35)  
NO.  
OPP100/OPP120/Turbo/Nitr  
o
UNIT  
MIN  
MAX  
13 tacc(DAT)  
Data maximum access time (GPMC_FCLK cycles)  
J(1)  
cycles  
(1) J = AccessTime * (TimeParaGranularity + 1)  
Table 8-32. Switching Characteristics Over Recommended Operating Conditions for GPMC/NAND Flash  
Interface  
(see Figure 8-33, Figure 8-34, Figure 8-35, Figure 8-36)  
OPP100/OPP120/Turbo/Nitr  
o
NO.  
PARAMETER  
UNIT  
MIN  
MAX  
A(1)  
1
2
3
4
5
6
7
8
9
tw(nWEV)  
Pulse duration, GPMC_WE valid time  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
td(nCSV-nWEV)  
td(CLEH-nWEV)  
td(nWEV-DV)  
Delay time, GPMC_CS[X] valid to GPMC_WE valid  
Delay time, GPMC_BE0_CLE high to GPMC_WE valid  
Delay time, GPMC_D[15:0] valid to GPMC_WE valid  
Delay time, GPMC_WE invalid to GPMC_AD[15:0] invalid  
Delay time, GPMC_WE invalid to GPMC_BE0_CLE invalid  
Delay time, GPMC_WE invalid to GPMC_CS[X] invalid  
Delay time, GPMC_ADV_ALE High to GPMC_WE valid  
Delay time, GPMC_WE invalid to GPMC_ADV_ALE invalid  
Cycle time, write cycle time  
B - 0.2(2)  
C - 0.2(3)  
D - 0.2(4)  
E - 0.2(5)  
F - 0.2(6)  
G - 0.2(7)  
C - 0.2(3)  
F - 0.2(6)  
B + 2.0(2)  
C + 2.0(3)  
D + 2.0(4)  
E + 2.0(5)  
F + 2.0(6)  
G + 2.0(7)  
C + 2.0(3)  
F + 2.0(6)  
H(8)  
I + 2.0(9)  
K(10)  
L(11)  
M + 2.0(12)  
td(nWEIV-DIV)  
td(nWEIV-CLEIV)  
td(nWEIV-nCSIV)  
td(ALEH-nWEV)  
td(nWEIV-ALEIV)  
10 tc(nWE)  
11 td(nCSV-nOEV)  
12 tw(nOEV)  
Delay time, GPMC_CS[X] valid to GPMC_OE_RE valid  
Pulse duration, GPMC_OE_RE valid time  
I - 0.2(9)  
13 tc(nOE)  
Cycle time, read cycle time  
14 td(nOEIV-nCSIV)  
Delay time, GPMC_OE_RE invalid to GPMC_CS[X] invalid  
M - 0.2(12)  
(1) A = (WEOffTime - WEOnTime) * (TimeParaGranularity + 1) * GPMC_FCLK  
(2) = B + nWE Min Delay - nCS Max Delay  
B = ((WEOnTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (WEExtraDelay - CSExtraDelay)) * GPMC_FCLK  
(3) = C + nWE Min Delay - CLE Max Delay  
C = ((WEOnTime - ADVOnTime) * (TimeParaGranularity + 1) + 0.5 * (WEExtraDelay - ADVExtraDelay)) * GPMC_FCLK  
(4) = D + nWE Min Delay - Data Max Delay  
D = (WEOnTime * (TimeParaGranularity + 1) + 0.5 * WEExtraDelay ) * GPMC_FCLK  
(5) =E + Data Min Delay - nWE Max Delay  
E = ((WrCycleTime - WEOffTime) * (TimeParaGranularity + 1) - 0.5 * WEExtraDelay ) * GPMC_FCLK  
(6) = F + CLE Min Delay - nWE Max Delay  
F = ((ADVWrOffTime - WEOffTime) * (TimeParaGranularity + 1) + 0.5 * (ADVExtraDelay - WEExtraDelay )) * GPMC_FCLK  
(7) =G + nCS Min Delay - nWE Max Delay  
G = ((CSWrOffTime - WEOffTime) * (TimeParaGranularity + 1) + 0.5 * (CSExtraDelay - WEExtraDelay )) * GPMC_FCLK  
(8) H = WrCycleTime * (1 + TimeParaGranularity) * GPMC_FCLK  
(9) = I + nOE Min Delay - nCS Max Delay  
I = ((OEOnTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (OEExtraDelay - CSExtraDelay)) * GPMC_FCLK  
(10) K = (OEOffTime - OEOnTime) * (1 + TimeParaGranularity) * GPMC_FCLK  
(11) L = RdCycleTime * (1 + TimeParaGranularity) * GPMC_FCLK  
(12) =M + nCS Min Delay - nOE Max Delay  
M = ((CSRdOffTime - OEOffTime) * (TimeParaGranularity + 1) + 0.5 * (CSExtraDelay - OEExtraDelay ))* GPMC_FCLK  
Copyright © 2013, Texas Instruments Incorporated  
Peripheral Information and Timings  
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