參數(shù)資料
型號: SM320C6414DGADW60
廠商: TEXAS INSTRUMENTS INC
元件分類: 數(shù)字信號處理
英文描述: 64-BIT, 75 MHz, OTHER DSP, CPGA570
封裝: 33 X 33 MM, CERAMIC, FCPGA-570
文件頁數(shù): 130/134頁
文件大?。?/td> 1997K
代理商: SM320C6414DGADW60
SMJ320C6414, SMJ320C6415, SMJ320C6416
FIXEDPOINT DIGITAL SIGNAL PROCESSORS
SGUS050A JANUARY 2004 REVISED MARCH 2004
95
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
SYNCHRONOUS DRAM TIMING (CONTINUED)
ECLKOUTx
CEx
ABE[7:0] or BBE[1:0]
AEA[12:3] or BEA[10:1]
AED[63:0] or BED[15:0]
AEA13 or BEA11
AOE/SDRAS/SOE
ARE/SDCAS/SADS/SRE
AWE/SDWE/SWE
AEA[22:14] or BEA[20:12]
BE1
BE2
BE3
BE4
Bank
Column
D1
D2
D3
D4
8
7
6
5
1
3
2
8
4
1
READ
PDT§
14
These C64x devices have two EMIFs (EMIFA and EMIFB). All EMIFA signals are prefixed by an “A” and all EMIFB signals are prefixed by a
“B”. Throughout the rest of this document, in generic EMIF areas of discussion, the prefix “A” or “B” may be omitted [e.g., the synchronous DRAM
memory access signals are shown as generic ( SDCAS, SDWE, and SDRAS ) instead of ASDCAS, ASDWE, and ASDRAS (for EMIFA) and
BSDCAS, BSDWE, and BSDRAS (for EMIFB)].
ARE/SDCAS/SADS/SRE, AWE/SDWE/SWE, and AOE/SDRAS/SOE operate as SDCAS, SDWE, and SDRAS, respectively, during SDRAM
accesses.
§ PDT signal is only asserted when the EDMA is in PDT mode (set the PDTS bit to 1 in the EDMA options parameter RAM). For PDT read, data
is not latched into EMIF. The PDTRL field in the PDT control register (PDTCTL) configures the latency of the PDT signal with respect to the data
phase of a read transaction. The latency of the PDT signal for a read can be programmed to 0, 1, 2, or 3 by setting PDTRL to 00, 01, 10, or 11,
respectively. PDTRL equals 00 (zero latency) in Figure 27.
Figure 27. SDRAM Read Command (CAS Latency 3) for EMIFA and EMIFB
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