OMAP3530 Datasheet, PDF (185/230 Pages) Texas Instruments – Applications Processor

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OMAP3530/25 Applications Processor
SPRS507 – FEBRUARY 2008
mmx_txen_n
mmx_txdat
mmx_txse0
mmx_rxdp
mmx_rxdm
mmx_rxrcv
Transmit
FSU5
FSU6
FSU7
FSU8
FSU9
Receive
FSU1
FSU1
FSU3
FSU2
FSU2
FSU4
In mmx, x is equal to 0, 1, or 2.
Figure 6-37. Low-/Full-Speed USB – Unidirectional Standard 6-pin Mode
030-080
6.6.3.2 Multiport Full-Speed Universal Serial Bus (USB) – Bidirectional Standard 4-pin Mode
Table 6-72 and Table 6-73 assume testing over the recommended operating conditions (see Figure 6-38).
Table 6-71. Low-/Full-Speed USB Timing Conditions – Bidirectional Standard 4-pin Mode
TIMING CONDITION PARAMETER
Input Conditions
t_R
t_F
Output Conditions
Input signal rise time
Input signal fall time
C_LOAD
Output load capacitance
VALUE
2.0
2.0
15.0
UNIT
ns
ns
pF
Table 6-72. Low-/Full-Speed USB Timing Requirements – Bidirectional Standard 4-pin Mode
NO.
PARAMETER
FSU10 t_d(DAT,SE0)
Time duration, mmx_txdat and mmx_txse0 low together
during transition
FSU11 t_d(DAT,SE0)
Time duration, mmx_txdat and mmx_txse0 high together
during transition
FSU12 t_d(RCVU0)
Time duration, mmx_rrxcv undefine during a single end 0
(mmx_txdat and mmx_txse0 low together)
FSU13 t_d(RCVU1)
Time duration, mmx_rxrcv undefine during a single end 1
(mmx_txdat and mmx_txse0 high together)
(1) In mmx, x is equal to 0, 1, or 2.
1.15 V
MIN
MAX
14.0
8.0
14.0
8.0
1.0 V
MIN
MAX
14.0
8.0
14.0
8.0
UNIT
ns
ns
ns
ns
Table 6-73. Low-/Full-Speed USB Switching Characteristics – Bidirectional Standard 4-pin Mode
NO.
FSU14
FSU15
FSU16
t_{d(TXENL-DATV)}
t_{d(TXENL-SE0V)}
t_s(DAT-SE0)
FSU17 t_{d(DATV-TXENH)}
PARAMETER
Delay time, mmx_txen_n low to mmx_txdat valid
Delay time, mmx_txen_n low to mmx_txse0 valid
Skew between mmx_txdat and mmx_txse0
transition
Delay time, mmx_txdat invalid before mmx_txen_n
high
1.15 V
MIN
MAX
81.8
84.8
81.8
84.8
1.5
81.8
1.0 V
MIN
MAX
81.8
84.8
81.8
84.8
1.5
81.8
UNIT
ns
ns
ns
ns
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TIMING REQUIREMENTS AND SWITCHING CHARACTERISTICS 185