參數(shù)資料
型號: TMX320VC5509AGHH
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: TMS320VC5509A Fixed-Point Digital Signal Processor
中文描述: TMS320VC5509A定點數(shù)字信號處理器
文件頁數(shù): 136/144頁
文件大?。?/td> 1603K
代理商: TMX320VC5509AGHH
Electrical Specifications
136
November 2002 Revised January 2005
SPRS205D
5.19 Universal Serial Bus (USB) Timings
Table 545 assumes testing over recommended operating conditions (see Figure 541 and Figure 542).
Table 545. Universal Serial Bus (USB) Characteristics
CV
DD
= 1.2 V
CV
DD
= 1.35 V
FULL SPEED
12Mbps
CV
DD
= 1.6 V
NO.
PARAMETER
FULL SPEED
12Mbps
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
U1
t
r
t
f
t
RFM
V
CRS
t
jr
f
op
R
s(DP)
R
s(DN)
C
edge(DP)
C
edge(DN)
Rise time of DP and DN signals
Fall time of DP and DN signals
Rise/Fall time matching
Output signal cross-over voltage
Differential propagation jitter
§
4
20
4
20
ns
U2
4
20
4
20
ns
90
111.11
90
111.11
%
1.3
2.0
1.3
2.0
V
2
2
2
2
ns
Operating frequency (Full speed mode)
12
12
Mb/s
pF
U3
Series resistor
24
24
U4
Series resistor
24
24
U5
Edge rate control capacitor
22
22
U6
Edge rate control capacitor
22
22
pF
C
L
= 50 pF
(t
r
/t
f
) x 100
§
t
px(1)
t
px(0)
USB PLL is susceptible to power supply ripple, refer to recommend operating conditions for allowable supply ripple to meet the USB peak-to-peak
jitter specification.
V
OL
U1
U2
V
CRS
D+
V
OH
t
period
+ Jitter
90%
10%
D
Figure 541. USB Timings
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