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GPMC_FCLK
SPRS717F –OCTOBER 2011–REVISED APRIL 2013
GNF12
GNF10
GNF15
gpmc_csn[x]
gpmc_be0n_cle
gpmc_advn_ale
GNF14
GNF13
gpmc_oen
gpmc_ad[15:0]
DATA
gpmc_wait[x]
(1) GNF12 parameter illustrates amount of time required to internally sample input data. It is expressed in number of GPMC functional
clock cycles. From start of read cycle and after GNF12 functional clock cycles, input data will be internally sampled by active
functional clock edge. GNF12 value must be stored inside AccessTime register bits field.
(2) GPMC_FCLK is an internal clock (GPMC functional clock) not provided externally.
(3) In gpmc_csn[x], x is equal to 0, 1, 2, 3, 4 or 5. In gpmc_wait[x], x is equal to 0 or 1.
Figure 5-30. GPMC and NAND Flash—Data Read Cycle
GPMC_FCLK
GNF1
GNF6
gpmc_csn[x]
gpmc_be0n_cle
gpmc_advn_ale
gpmc_oen
GNF9
GNF0
gpmc_wen
GNF3
GNF4
gpmc_ad[15:0]
DATA
(1) In gpmc_csn[x], x is equal to 0, 1, 2, 3, 4 or 5.
Figure 5-31. GPMC and NAND Flash—Data Write Cycle
Copyright © 2011–2013, Texas Instruments Incorporated
Peripheral Information and Timings
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