Datasheet

AM3517, AM3505
SPRS550E –OCTOBER 2009–REVISED MARCH 2013 www.ti.com
Table 6-4. GPMC/NOR Flash Interface Switching Characteristics Synchronous Mode (continued)
NO. PARAMETER 1.8V, 3.3V UNIT
MIN MAX
F8 t
d(CLKH-nADV)
Delay time, gpmc_clk rising edge to G
(9)
- 1.9 G
(9)
+ 4.1 ns
gpmc_nadv_ale transition
F9 t
d(CLKH-nADVIV)
Delay time, gpmc_clk rising edge to D
(8)
- 1.9 D
(8)
+ 4.1 ns
gpmc_nadv_ale invalid
F10 t
d(CLKH-nOE)
Delay time, gpmc_clk rising edge to H
(10)
- 2.1 H
(10)
+ 2.1 ns
gpmc_noe transition
F11 t
d(CLKH-nOEIV)
Delay time, gpcm rising edge to E
(6)
- 2.1 E
(6)
+ 2.1 ns
gpmc_noe invalid
(9) 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)
(10) For OE falling edge (OE activated) / IO DIR rising edge (Data Bus input 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):
• GpmcFCLKDivider = 0:
• H = 0.5 * OEExtraDelay * GPMC_FCLK
• Case GpmcFCLKDivider = 1:
• H = 0.5 * OEExtraDelay * GPMC_FC 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)
110 Timing Requirements and Switching Characteristics Copyright © 2009–2013, Texas Instruments Incorporated
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