AM3359, AM3358, AM3357, AM3356, AM3354, AM3352
SPRS717H – OCTOBER 2011 – REVISED MAY 2015
Table 7-26. GPMC and NOR Flash Switching Characteristics – Asynchronous Mode (continued)
OPP100
OPP50
NO.
PARAMETER
UNIT
MIN
MAX
MIN
MAX
FA27
t
d(csnV-wenIV)
Delay time, output chip select gpmc_csn[x]
– 0.2
F
+ 2.0
F
– 5
F
+ 5
ns
valid to output write enable gpmc_wen invalid
FA28
t
d(wenV-dV)
Delay time, output write enable gpmc_ wen
2.0
5
ns
valid to output data gpmc_ad[15:0] valid
FA29
t
d(dV-csnV)
Delay time, output data gpmc_ad[15:0] valid to
– 0.2
J
+ 2.0
J
– 5
J
+ 5
ns
output chip select gpmc_csn[x]
valid
FA37
t
d(oenV-aIV)
Delay time, output enable gpmc_oen valid to
2.0
5
ns
output address gpmc_ad[15:0] phase end
(1) For single read: A = (CSRdOffTime – CSOnTime) × (TimeParaGranu 1) × GPMC_FCLK
For single write: A = (CSWrOffTime – CSOnTime) × (TimeParaGranu 1) × GPMC_FCLK
For burst read: A = (CSRdOffTime – CS (n – 1) × PageBurstAccessTime) × (TimeParaGranu 1) × GPMC_FCLK
For burst write: A = (CSWrOffTime – CS (n – 1) × PageBurstAccessTime) × (TimeParaGranu 1) × GPMC_FCLK
with n being the page burst access number
(2) For reading: B = ((ADVRdOffTime – CSOnTime) × (TimeParaGranu 1) + 0.5 × (ADVExtraDelay – CSExtraDelay)) ×
For writing: B = ((ADVWrOffTime – CSOnTime) × (TimeParaGranu 1) + 0.5 × (ADVExtraDelay – CSExtraDelay)) ×
GPMC_FCLK
(3) C = ((OEOffTime – CSOnTime) × (TimeParaGranu 1) + 0.5 × (OEExtraDelay – CSExtraDelay)) × GPMC_FCLK
(4) D = PageBurstAccessTime × (TimeParaGranu 1) × GPMC_FCLK
(5) E = ((WEOnTime – CSOnTime) × (TimeParaGranu 1) + 0.5 × (WEExtraDelay – CSExtraDelay)) × GPMC_FCLK
(6) F = ((WEOffTime – CSOnTime) × (TimeParaGranu 1) + 0.5 × (WEExtraDelay – CSExtraDelay)) × GPMC_FCLK
(7) G = Cycle2CycleDelay × GPMC_FCLK
(8) I = ((OEO (n – 1) × PageBurstAccessTime – CSOnTime) × (TimeParaGranu 1) + 0.5 × (OEExtraDelay – CSExtraDelay))
× GPMC_FCLK
(9) J = (CSOnTime × (TimeParaGranu 1) + 0.5 × CSExtraDelay) × GPMC_FCLK
(10) K = ((ADVOnTime – CSOnTime) × (TimeParaGranu 1) + 0.5 × (ADVExtraDelay – CSExtraDelay)) × GPMC_FCLK
(11) L = ((OEOnTime – CSOnTime) × (TimeParaGranu 1) + 0.5 × (OEExtraDelay – CSExtraDelay)) × GPMC_FCLK
(12) For single read: N = RdCycleTime × (TimeParaGranu 1) × GPMC_FCLK
For single write: N = WrCycleTime × (TimeParaGranu 1) × GPMC_FCLK
For burst read: N = (RdCyc (n – 1) × PageBurstAccessTime) × (TimeParaGranu 1) × GPMC_FCLK
For burst write: N = (WrCyc (n – 1) × PageBurstAccessTime) × (TimeParaGranu 1) × GPMC_FCLK
(13) In gpmc_csn[x], x is equal to 0, 1, 2, 3, 4, or 5.
(14) GPMC_FCLK is general-purpose memory controller internal functional clock period in ns.
138
Peripheral Information and Timings
Copyright © 2011–2015, Texas Instruments Incorporated
Product Folder Links: