參數(shù)資料
型號(hào): DSP56855BU120
廠商: 飛思卡爾半導(dǎo)體(中國(guó))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(yè)數(shù): 32/52頁(yè)
文件大小: 618K
代理商: DSP56855BU120
56855 Technical Data, Rev. 6
32
Freescale Semiconductor
Figure 4-17 Controller-to-Host DMA Read Mode
Access time
TRADV
13
ns
4-18
4-19
Disable time
TRADX
5
ns
4-18
4-19
Disable time
TRADZ
3
ns
4-18
4-19
Setup time
TDACKS
3
ns
4-20
Hold time
TACKDH
1
ns
4-20
Setup time
TADSS
3
ns
4-21
4-23
Hold time
TDSAH
1
ns
4-21
4-22
Pulse width
TWDS
5
ns
4-21
4-22
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
4-17
4-20
1.
The formulas: T = clock cycle. f ipb = 60MHz, T = 16.7ns.
Table 4-8 Host Interface Port Timing
1
(Continued)
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
Characteristic
Symbol
Min
Max
Unit
See Figure
HACK
HD
HREQ
TACKDV
TACKDZ
TREQACKL
TACKREQL
TACKREQH
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