TMS320DM6467CCUTA Datasheet, PDF (280/355 Pages) Texas Instruments – Digital Media System-on-Chip

TMS320DM6467
SPRS403H – DECEMBER 2007 – REVISED JUNE 2012
7.19.4 USB2.0 Electrical Data/Timing
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Table 7-88. Switching Characteristics Over Recommended Operating Conditions for USB2.0 (see
Figure 7-63)
NO.
PARAMETER
1 t_r(D)
2 t_f(D)
3 t_rfM
4 V_CRS
5 t_jr(source)NT
t_jr(FUNC)NT
6 t_jr(source)PT
t_jr(FUNC)PT
7 t_w(EOPT)
8 t_w(EOPR)
9 t_(DRATE)
10 Z_DRV
11 USB_R1
Rise time, USB_DP and USB_DN signals⁽¹⁾
Fall time, USB_DP and USB_DN signals⁽¹⁾
Rise/Fall time, matching⁽²⁾
Output signal cross-over voltage⁽¹⁾
Source (Host) Driver jitter, next transition
Function Driver jitter, next transition
Source (Host) Driver jitter, paired transition⁽⁴⁾
Function Driver jitter, paired transition
Pulse duration, EOP transmitter
Pulse duration, EOP receiver
Data Rate
Driver Output Resistance
USB reference resistor
LOW SPEED
1.5 Mbps
MIN MAX
75
300
75
300
80
125
1.3
2
2
25
1
10
1250 1500
670
1.5
–
–
9.9 10.1
-594, -729
FULL SPEED
12 Mbps
MIN MAX
4
20
4
20
90 111.11
1.3
2
2
2
1
1
160
175
82
12
28 49.5
9.9 10.1
HIGH SPEED
480 Mbps
UNIT
MIN MAX
0.5
ns
0.5
ns
–
–%
–
–V
(3) _ns
(3) _ns
(3) _ns
(3) _ns
–
– ns
–
ns
480 Mb/s
40.5 49.5 Ω
9.9 10.1 kΩ
(1) Low Speed: C_L = 200 pF, Full Speed: C_L = 50 pF, High Speed: C_L = 50 pF
(2) t_RFM = (t_r/t_f) x 100. [Excluding the first transaction from the Idle state.]
(3) For more detailed information, see the Universal Serial Bus Specification Revision 2.0, Chapter 7. Electrical.
(4) t_jr = t_px(1) - t_px(0)
USB_DN
V_CRS
USB_DP
10% V_OL
t_{per −} t_jr
90% V_OH
t_r
t_f
Figure 7-63. USB2.0 Integrated Transceiver Interface Timing
USB
USB_V_SSREF
USB_R1
10 K Ω ±1%^(A)
A. Place the 10 K Ω ± 1% as close to the device as possible.
Figure 7-64. USB Reference Resistor Routing
280 Peripheral Information and Electrical Specifications
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