參數(shù)資料
型號: TMS320C6713BGDPA200
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: FLOATING-POINT DIGITAL SIGNAL PROCESSORS
中文描述: 浮點數(shù)字信號處理器
文件頁數(shù): 107/150頁
文件大?。?/td> 2039K
代理商: TMS320C6713BGDPA200
TMS320C6713, TMS320C6713B
FLOATING-POINT DIGITAL SIGNAL PROCESSORS
SPRS186I
DECEMBER 2001
REVISED MAY 2004
107
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
1443
ASYNCHRONOUS MEMORY TIMING
timing requirements for asynchronous memory cycles
§
(see Figure 34
Figure 35)
NO.
PYPA
167
PYP
200
GDPA
200
GDP
225
GDP
300
UNIT
MIN
6.5
MAX
3
4
6
7
t
su(EDV-AREH)
t
h(AREH-EDV)
t
su(ARDY-EKOH)
t
h(EKOH-ARDY)
Setup time, EDx valid before ARE high
Hold time, EDx valid after ARE high
Setup time, ARDY valid before ECLKOUT
high
Hold time, ARDY valid after ECLKOUT
high
ns
ns
ns
ns
1
3
2.3
To ensure data setup time, simply program the strobe width wide enough. ARDY is internally synchronized. The ARDY signal is recognized in
the cycle for which the setup and hold time is met. To use ARDY as an asynchronous input, the pulse width of the ARDY signal should be wide
enough (e.g., pulse width = 2E) to ensure setup and hold time is met.
RS = Read setup, RST = Read strobe, RH = Read hold, WS = Write setup, WST = Write strobe, WH = Write hold. These parameters are
programmed via the EMIF CE space control registers.
§
E = ECLKOUT period in ns
switching characteristics over recommended operating conditions for asynchronous memory
cycles
§
(see Figure 34
Figure 35)
NO.
PARAMETER
PYPA
167
PYP
200
GDPA
200
GDP
225
GDP
300
UNIT
MIN
MAX
1
2
5
8
9
10
t
osu(SELV-AREL)
t
oh(AREH-SELIV)
t
d(EKOH-AREV)
t
osu(SELV-AWEL)
t
oh(AWEH-SELIV)
d(EKOH-AWEV)
Output setup time, select signals valid to ARE low
Output hold time, ARE high to select signals invalid
Delay time, ECLKOUT high to ARE valid
Output setup time, select signals valid to AWE low
Output hold time, AWE high to select signals and EDx invalid
Delay time, ECLKOUT high to AWE valid
RS*E
1.7
RH*E
1.7
ns
ns
ns
ns
ns
ns
1.5
7
WS*E
1.7
WH*E
1.7
1.5
7
11
t
osu(EDV-AWEL)
Output setup time, ED valid to AWE low
(WS
1)*E
1.7
ns
RS = Read setup, RST = Read strobe, RH = Read hold, WS = Write setup, WST = Write strobe, WH = Write hold. These parameters are
programmed via the EMIF CE space control registers.
§
E = ECLKOUT period in ns
Select signals include: CEx, BE[3:0], EA[21:2], and AOE.
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