AM3703 datasheet(230/280 Pages) TI

230 / 280 page

AM3715, AM3703

SPRS616F

– JUNE 2010 – REVISED AUGUST 2011

www.ti.com

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

VALUE

UNIT

Input Conditions

Input signal rise time

Input signal fall time

Output Condition

CLOAD

Output load capacitance(1)

(1) Buffer strength configuration: LB0 = 1.

Table 6-83. LS- / FS-USB Timing Requirements

—Unidirectional Standard 6-Pin Mode(1) (2)

NO.

PARAMETER

OPP100

OPP50

UNIT

MIN

MAX

MIN

MAX

FSU1

td(vp,vm)

Time duration, mmx_rxdp and mmx_rx low together

during transition

FSU2

td(vp,vm)

Time duration, mmx_rxdp and mmx_rx high together

during transition

FSU3

td(rcvU0)

Time duration, mmx_rrxcv undefine during a single

end 0 (mmx_rxdp and mmx_rx low together)

FSU4

td(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.

Table 6-84. LS- / FS-USB Switching Characteristics

—Unidirectional Standard 6-Pin Mode(1) (2)

NO.

PARAMETER

OPP100

OPP50

UNIT

MIN

MAX

MIN

MAX

FSU5

td(txenL-dV)

Delay time, mmx_txen_n low to mmx_txdat valid

81.8

84.8

81.8

84.8

FSU6

td(txenL-se0V)

Delay time, mmx_txen_n low to mmx_txse0 valid

81.8

84.8

81.8

84.8

FSU7

ts(d-se0)

Skew between mmx_txdat and mmx_txse0 transition

1.5

FSU8

td(dI-txenH)

Delay time, mmx_txdat invalid to mmx_txen_n high

81.8

FSU9

td(se0I-txenH)

Delay time, mmx_txse0 invalid to mmx_txen_n high

81.8

(1) In mmx, x is equal to 0, 1, or 2.

(2) See Section 4.3.4, Processor Clocks.

230

Timing Requirements and Switching Characteristics

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