參數(shù)資料
型號(hào): TMS320LC546
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): 66/107頁(yè)
文件大小: 2149K
代理商: TMS320LC546
TMS320C54x, TMS320LC54x
FIXED-POINT DIGITAL SIGNAL PROCESSORS
SPRS039A – FEBRUARY 1996 – REVISED JULY 1997
63
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
memory and parallel I/O interface timing
switching characteristics over recommended operating conditions for a memory read
(MSTRB = 0) [H = 0.5 t
c(CO)
]
(see Figure 14)
’LC542-40
’LC543-40
MIN
MAX
PARAMETER
’C54x-40
’LC54x-40
’LC54x-50
’54x-66
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
td(CLKL-A)
Delay time, address valid from
CLKOUT low§
0
5
0
5
0
5
0
5
ns
td(CLKH-A)
Delay time, address valid from
CLKOUT high (transition)#
0
5
0
5
0
5
0
5
ns
td(CLKL-MSL)
Delay time, MSTRB low from CLKOUT
low
0
5
0
5
0
5
0
5
ns
td(CLKL-MSH)
Delay time, MSTRB high from
CLKOUT low
– 2
3
– 2
3
– 2
3
–2
3
ns
th(CLKL-A)R
Hold time, address valid after CLKOUT
low
0
5
0
5
0
5
0
5
ns
th(CLKH-A)R
Hold time, address valid after CLKOUT
high
0
5
0
5
0
5
0
5
ns
timing requirements over recommended operating conditions for a memory read (MSTRB = 0)
[H = 0.5 t
c(CO)
]
(see Figure 14)
’LC542-40
’LC543-40
’C54x-40
’LC54x-40
’LC54x-50
’54x-66
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
ta(A)M
Access time, read data access from
address valid
2H–12
2H–10
2H–10
2H–9
ns
ta(MSTRBL)
Access time, read data access from
MSTRB low
2H–12
2H–10
2H–10
2H–10
ns
tsu(D)R
Setup time, read data before CLKOUT
low
7
5
5
3
ns
th(D)R
Hold time, read data after CLKOUT
low
0
0
0
0
ns
th(A-D)R
Hold time, read data after address
invalid
0
0
0
0
ns
th(D)MSTRBH
A15–A0, PS, and DS timings are all included in timings referenced as address.
See Table 15, Table 16, and Table 17 for address bus timing variation with load capacitance.
§In the case of a memory read preceded by a memory read
Values derived from characterization data and not tested
#In the case of a memory read preceded by a memory write
Hold time, read data after MSTRB high
0
0
0
0
ns
A
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