參數(shù)資料
型號: TMS320C10-14
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: Digital Signal Processors(280ns指令周期,分離的程序和數(shù)據(jù)總線,外部輪詢中斷的DSP)
中文描述: 數(shù)字信號處理器(280ns指令周期,分離的程序和數(shù)據(jù)總線,外部輪詢中斷的數(shù)字信號處理器)
文件頁數(shù): 18/139頁
文件大?。?/td> 1478K
代理商: TMS320C10-14
TEST CONDITION
RL = 825
,
CL = 100 pF
(see Figure 2)
UNIT
SPRS009C–JANUARY 1987–REVISED JULY 1991
TMS320C10, TMS320C10-25
DIGITAL SIGNAL PROCESSORS
POST OFFICE BOX 1443
HOUSTON, TEXAS 77001
18
timing requirements over recommended operating conditions
TMS320C10
TMS320C10-25
MIN
NOM
MAX
MIN
NOM
MAX
tsu(D)
Setup time, data bus valid prior to CLKOUT
50
40
ns
th(D)
Hold time, data bus held valid after CLKOUT
(see Note 9)
0
0
ns
NOTE 9:
Data may be removed from the data bus upon MEN
or DEN
preceding CLKOUT
.
SUGGESTED I/O DECODE CIRCUIT
The circuit shown in Figure 3 is a design example for interfacing I/O devices to the
C10/C10-25. This circuit
decodes the address for output operations using the OUT instruction. The same circuit can be used to decode
input and output operations if the inverter (’ALS04) is replaced with a NAND gate and both DEN and WE are
connected. Inputs and outputs can be decoded at the same port provided the output of the decoder (’AS137)
is gated with the appropriate signal (DEN or WE) to select read or write (using an ’ALS32). Access times can
be increased when the circuit shown in Figure 3 is repeated to support IN instructions with DEN connected rather
than WE.
The table write (TBLW) function requires a different circuit. A detailed discussion of an example circuit for this
function is described in the application report, “Interfacing External Memory to the TMS32010”, published in the
book, Digital Signal Processing Applications with the TMS320 Family (SPRA012A).
TMS320C10
74AS137
GL
A
B
C
G1
G2
4
1
2
3
6
5
2
1
40
PA0
PA1
PA2
74ALS04
32
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
15
14
13
12
11
10
9
7
I/O Device
VCC
WE
Figure 3. I/O Decode Circuit
相關PDF資料
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