11
GPMC
gpmc_a[11:1]
Device
gpmc_ad[15:0]
gpmc_csn[6:0]
gpmc_advn_ale
gpmc_oen
gpmc_wen
gpmc_be0n_cle
gpmc_be1n
gpmc_wpn
gpmc_wait[1:0]
External device/
memory
A/D[15:0]
ADVn
WAIT
WEn
OEn
WPn
CEn
A[26:16]
16
A[27:17]
CSn[6:0]
ADVn_ALE
OEn_REn
WEn
BE0n_CLE
BE0n/CLE
BE1n
BE1n
WPn
WAIT[1:0]
CLK
gpmc_clk
CLK
A[16:1]/D[15:0]
GPMC
7.1.3.2
GPMC Modes
This section shows three GPMC external connections options:
•
shows a connection between the GPMC and a 16-bit synchronous address/data-multiplexed
(or AAD-multiplexed, but this protocol use less address pins) external memory device.
•
shows a connection between the GPMC and a 16-bit synchronous nonmultiplexed external
memory device .
•
shows a connection between the GPMC and a 8-bit NAND device
Figure 7-3. GPMC to 16-Bit Address/Data-Multiplexed Memory
258
Memory Subsystem
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated