AM3703 Datasheet, PDF (230/280 Pages) Texas Instruments – AM3715, AM3703 Sitara ARM Microprocessors

AM3715, AM3703
SPRS616F – JUNE 2010 – REVISED AUGUST 2011
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6.6.3.1 FS-USB—Unidirectional Standard 6-pin Mode
Table 6-83 and Table 6-84 assume testing over the recommended operating conditions and electrical
characteristic conditions below (see Figure 6-48).
Table 6-82. LS- / FS-USB Timing Conditions—Unidirectional Standard 6-Pin Mode
TIMING CONDITION PARAMETER
Input Conditions
t_R
Input signal rise time
t_F
Input signal fall time
Output Condition
C_LOAD
Output load capacitance⁽¹⁾
(1) Buffer strength configuration: LB0 = 1.
VALUE
2
2
15
UNIT
ns
ns
pF
Table 6-83. LS- / FS-USB Timing Requirements—Unidirectional Standard 6-Pin Mode^{(1) (2)}
NO.
PARAMETER
FSU1 t_d(vp,vm)
Time duration, mmx_rxdp and mmx_rx low together
during transition
FSU2 t_d(vp,vm)
Time duration, mmx_rxdp and mmx_rx high together
during transition
FSU3 t_d(rcvU0)
Time duration, mmx_rrxcv undefine during a single
end 0 (mmx_rxdp and mmx_rx low together)
FSU4 t_d(rcvU1)
Time duration, mmx_rxrcv undefine during a single
end 1 (mmx_rxdp and mmx_rx high together)
(1) In mmx, x is equal to 0, 1, or 2.
(2) See Section 4.3.4, Processor Clocks.
OPP100
MIN
MAX
14
8
14
8
OPP50
MIN
MAX
14
8
14
8
UNIT
ns
ns
ns
ns
Table 6-84. LS- / FS-USB Switching Characteristics—Unidirectional Standard 6-Pin Mode^{(1) (2)}
NO.
PARAMETER
FSU5 t_d(txenL-dV)
Delay time, mmx_txen_n low to mmx_txdat valid
FSU6 t_{d(txenL-se0V)}
Delay time, mmx_txen_n low to mmx_txse0 valid
FSU7 t_s(d-se0)
Skew between mmx_txdat and mmx_txse0 transition
FSU8 t_d(dI-txenH)
Delay time, mmx_txdat invalid to mmx_txen_n high
FSU9 t_{d(se0I-txenH)}
Delay time, mmx_txse0 invalid to mmx_txen_n high
(1) In mmx, x is equal to 0, 1, or 2.
(2) See Section 4.3.4, Processor Clocks.
OPP100
MIN
MAX
81.8
84.8
81.8
84.8
1.5
81.8
81.8
OPP50
MIN
MAX
81.8
84.8
81.8
84.8
1.5
81.8
81.8
UNIT
ns
ns
ns
ns
ns
230 Timing Requirements and Switching Characteristics
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