參數(shù)資料
型號(hào): DSP56857BUE
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: 16-bit Digital Signal Controllers
中文描述: 16位數(shù)字信號(hào)控制器
文件頁數(shù): 31/53頁
文件大?。?/td> 680K
代理商: DSP56857BUE
Host Interface Port
56857 Technical Data, Rev. 6
Freescale Semiconductor
31
4.7 Host Interface Port
Table 4-8 Host Interface Port Timing
1
Operating Conditions: V
SS
= V
SSIO
= V
SSA
= 0 V, V
DD
= 1.62-1.98V, V
DDIO
= V
DDA
=
3.0–3.6V, T
A
= –40
°
to +120
°
C, C
L
50pF, f
op
= 120MHz
1.
The formulas: T = clock cycle. f ipb = 60MHz, T = 16.7ns.
Characteristic
Symbol
Min
Max
Unit
See Figure
Access time
TACKDV
13
ns
4-19
Disable time
TACKDZ
3
ns
4-19
Time to disassert
TACKREQH
3.5
9
ns
4-19
4-22
Lead time
TREQACKL
0
ns
4-19
4-22
Access time
TRADV
13
ns
4-20
4-21
Disable time
TRADX
5
ns
4-20
4-21
Disable time
TRADZ
3
ns
4-20
4-21
Setup time
TDACKS
3
ns
4-22
Hold time
TACKDH
1
ns
4-22
Setup time
TADSS
3
ns
4-23
4-24
Hold time
TDSAH
1
ns
4-23
4-24
Pulse width
TWDS
5
ns
4-23
4-24
Time to re-assert
1. After second write in 16-bit mode
2. After first write in 16-bit mode
or after write in 8-bit mode
TACKREQL
4T + 5
5
5T + 9
13
ns
ns
4-19
4-22
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