EMB_CS
EMB_CAS
EMB_RAS
EMB_WE
EMB_CLK
EMB_SDCKE
EMB_BA[1:0]
EMB_A[x:0]
EMB_D[x:0]
EMB_WE_DQM[x:0]
SDRAM
Interface
Cmd/Write
FIFO
Registers
Read
FIFO
Crossbar
EMIFB
Master
Peripherals
(USB, UHPI...)
EDMA
CPU
MPU2
OMAP-L137
www.ti.com
SPRS563G – SEPTEMBER 2008 – REVISED JUNE 2014
6.11 External Memory Interface B (EMIFB)
Figure 6-20
illustrates a high-level view of the EMIFB and its connections within the device. Multiple
requesters have access to EMIFB through a switched central resource (indicated as crossbar in the
figure). The EMIFB implements a split transaction internal bus, allowing concurrence between reads and
writes from the various requesters.
Figure 6-20. EMIFB Functional Block Diagram
EMIFB supports a 3.3V LVCMOS Interface.
6.11.1 EMIFB SDRAM Loading Limitations
EMIFB supports SDRAM up to 152MHz with up to two SDRAM or asynchronous memory loads. Additional
loads will limit the SDRAM operation to lower speeds and the maximum speed should be confirmed by
board simulation using IBIS models.
Copyright © 2008–2014, Texas Instruments Incorporated
Peripheral Information and Electrical Specifications
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