參數(shù)資料
型號(hào): TMS320LC545
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號(hào)處理
英文描述: Digital Signal Processors(20/25ns指令周期, 高性能,大并行度,特殊指令集可有效實(shí)現(xiàn)多種復(fù)雜算法及應(yīng)用的DSP)
中文描述: 數(shù)字信號(hào)處理器(20/25ns指令周期,高性能,大并行度,特殊指令集可有效實(shí)現(xiàn)多種復(fù)雜算法及應(yīng)用的數(shù)字信號(hào)處理器)
文件頁(yè)數(shù): 72/107頁(yè)
文件大?。?/td> 2149K
代理商: TMS320LC545
TMS320C54x, TMS320LC54x
FIXED-POINT DIGITAL SIGNAL PROCESSORS
SPRS039A – FEBRUARY 1996 – REVISED JULY 1997
69
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
memory and parallel I/O interface timing (continued)
switching characteristics over recommended operating conditions for a parallel I/O port write
(IOSTRB = 0) [H = 0.5 t
c(CO)
] (see Figure 17)
PARAMETER
’C54x-40
’LC54x-40
’LC54x-50
’54x-66
UNIT
MIN
MAX
MIN
MAX
td(CLKL-A)
td(CLKH-ISTRBL)
td(CLKH-D)IOW
td(CLKH-ISTRBH)
td(CLKL-RWL)
td(CLKL-RWH)
th(A)IOW
Delay time, address valid from CLKOUT low
5
5
ns
Delay time, IOSTRB low from CLKOUT high
0
5
0
5
ns
Delay time, write data valid from CLKOUT high
H–5§
H+10
H–5§
H+8
ns
Delay time, IOSTRB high from CLKOUT high
– 2
3
–2
3
ns
Delay time, R/W low from CLKOUT low
0
5
0
5
ns
Delay time, R/W high from CLKOUT low
Hold time, address valid from CLKOUT low
– 2
3
–2
3
ns
0
0
ns
timing requirements over recommended operating conditions for a parallel I/O port write
(IOSTRB = 0) [H = 0.5 t
c(CO)
] (see Figure 17)
’C54x-40
’LC54x-40
’LC54x-50
’54x-66
UNIT
MIN
MAX
H+5§
MIN
MAX
H+5§
th(D)IOW
tsu(D)IOSTRBH
tsu(A)IOSTRBL
See Table 15, Table 16, and Table 17 for address bus timing variation with load capacitance.
A15–A0, and IS timings are included in timings referenced as address.
§Values derived from characterization data and not tested
Hold time, write data after IOSTRB high
H–5
H–5
ns
Setup time, write data before IOSTRB high
H–7
H
H–4.5
H
ns
Setup time, address valid before IOSTRB low
H–5
H+5
H–5
H+5
ns
A
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