DM385, DM388
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SPRS821D –MARCH 2013–REVISED DECEMBER 2013
Table 8-28. Switching Characteristics Over Recommended Operating Conditions for GPMC and NOR
Flash Interface - Synchronous Mode (continued)
(see Figure 8-21, Figure 8-22, Figure 8-23 for Non-Multiplexed Modes)
(see Figure 8-24, Figure 8-25, Figure 8-26 for Multiplexed Modes)
OPP100/OPP120/Turb
o/Nitro
NO.
PARAMETER
UNIT
MIN
MAX
9
td(CLKH-nADV)
Delay time, GPMC_CLK rising edge to GPMC_ADV_ALE transition
Delay time, GPMC_CLK rising edge to GPMC_ADV_ALE invalid
Delay time, GPMC_CLK rising edge to GPMC_OE_RE transition
Delay time, GPMC_CLK rising edge to GPMC_OE_RE invalid
G - 2.3(7) G + 4.5(7)
D - 2.3(6) D + 4.5(6)
H - 2.3(8) H + 3.5(8)
E - 2.3(4) E + 3.5(4)
ns
ns
ns
ns
10 td(CLKH-nADVIV)
11 td(CLKH-nOE)
12 td(CLKH-nOEIV)
(7) For ADV falling edge (ADV activated):
•
Case GpmcFCLKDivider = 0:
G = 0.5 * ADVExtraDelay * GPMC_FCLK
Case GpmcFCLKDivider = 1:
•
G = 0.5 * ADVExtraDelay * GPMC_FCLK if (ClkActivationTime and ADVOnTime are odd) or (ClkActivationTime and ADVOnTime are
even)
G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK otherwise
•
Case GpmcFCLKDivider = 2:
G = 0.5 * ADVExtraDelay * GPMC_FCLK if ((ADVOnTime – ClkActivationTime) is a multiple of 3)
G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVOnTime – ClkActivationTime – 1) is a multiple of 3)
G = (2 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVOnTime – ClkActivationTime – 2) is a multiple of 3)
For ADV rising edge (ADV deactivated) in Reading mode:
•
Case GpmcFCLKDivider = 0:
G = 0.5 * ADVExtraDelay * GPMC_FCLK
•
Case GpmcFCLKDivider = 1:
G = 0.5 * ADVExtraDelay * GPMC_FCLK if (ClkActivationTime and ADVRdOffTime are odd) or (ClkActivationTime and
ADVRdOffTime are even)
G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK otherwise
•
Case GpmcFCLKDivider = 2:
G = 0.5 * ADVExtraDelay * GPMC_FCLK if ((ADVRdOffTime – ClkActivationTime) is a multiple of 3)
G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVRdOffTime – ClkActivationTime – 1) is a multiple of 3)
G = (2 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVRdOffTime – ClkActivationTime – 2) is a multiple of 3)
For ADV rising edge (ADV deactivated) in Writing mode:
•
Case GpmcFCLKDivider = 0:
G = 0.5 * ADVExtraDelay * GPMC_FCLK
•
Case GpmcFCLKDivider = 1:
G = 0.5 * ADVExtraDelay * GPMC_FCLK if (ClkActivationTime and ADVWrOffTime are odd) or (ClkActivationTime and
ADVWrOffTime are even)
G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK otherwise
•
Case GpmcFCLKDivider = 2:
G = 0.5 * ADVExtraDelay * GPMC_FCLK if ((ADVWrOffTime – ClkActivationTime) is a multiple of 3)
G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVWrOffTime – ClkActivationTime – 1) is a multiple of 3)
G = (2 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVWrOffTime – ClkActivationTime – 2) is a multiple of 3)
(8) For OE falling edge (OE activated) / IO DIR rising edge (IN direction) :
•
Case GpmcFCLKDivider = 0:
H = 0.5 * OEExtraDelay * GPMC_FCLK
•
Case GpmcFCLKDivider = 1:
H = 0.5 * OEExtraDelay * GPMC_FCLK if (ClkActivationTime and OEOnTime are odd) or (ClkActivationTime and OEOnTime are
even)
H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK otherwise
•
Case GpmcFCLKDivider = 2:
H = 0.5 * OEExtraDelay * GPMC_FCLK if ((OEOnTime – ClkActivationTime) is a multiple of 3)
H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK if ((OEOnTime – ClkActivationTime – 1) is a multiple of 3)
H = (2 + 0.5 * OEExtraDelay) * GPMC_FCLK if ((OEOnTime – ClkActivationTime – 2) is a multiple of 3)
For OE rising edge (OE deactivated):
•
Case GpmcFCLKDivider = 0:
H = 0.5 * OEExtraDelay * GPMC_FCLK
•
Case GpmcFCLKDivider = 1:
H = 0.5 * OEExtraDelay * GPMC_FCLK if (ClkActivationTime and OEOffTime are odd) or (ClkActivationTime and OEOffTime are
even)
H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK otherwise
•
Case GpmcFCLKDivider = 2:
H = 0.5 * OEExtraDelay * GPMC_FCLK if ((OEOffTime – ClkActivationTime) is a multiple of 3)
H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK if ((OEOffTime – ClkActivationTime – 1) is a multiple of 3)
H = (2 + 0.5 * OEExtraDelay) * GPMC_FCLK if ((OEOffTime – ClkActivationTime – 2) is a multiple of 3)
Copyright © 2013, Texas Instruments Incorporated
Peripheral Information and Timings
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