TUSB3200 datasheet(44/93 Pages) TI

Nome de Peças	TUSB3200

Descrição Electrónicos	USB Streaming Controller STC

PDF	93 Pages

Scroll/Zoom	100%

Fabricante Electrônico	TI [Texas Instruments]

Página de início	http://www.ti.com

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44 / 93 page

3–4

3.4.3

CODEC Port Interface Signals (AC ’97 Modes), TA = 25°C, DVDD = 3.3 V, DVDSS = 5 V,

AVDD = 3.3 V

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

fBIT_CLK

Frequency, BIT_CLK

See Note 1

12.288

MHz

tcyc1

Cycle time, BIT_CLK

See Note 1

81.4

tw1(H)

Pulse duration, BIT_CLK high

See Note 1

40.7

tw1(L)

Pulse duration, BIT_CLK low

See Note 1

40.7

fSYNC

Frequency, SYNC

CL = 50 pF

kHz

tcyc2

Cycle time, SYNC

CL = 50 pF

20.8

µs

tw2(H)

Pulse duration, SYNC high

CL = 50 pF

1.3

µs

tw2(L)

Pulse duration, SYNC low

CL = 50 pF

19.5

µs

tpd1

Propagation delay time, BIT_CLK rising edge to SYNC, SD_OUT

and RESET

CL = 50 pF

tsu

Setup time, SD_IN to BIT_CLK falling edge

Hold time, SD_IN from BIT_CLK falling edge

NOTE 1: Worst case duty cycle is 45/55.

tw1(H)

tw1(L)

tcyc1

tw2(H)

tw2(L)

tcyc2

BIT_CLK

SYNC

Figure 3–3. BIT_CLK and SYNC Timing Waveforms

tsu

BIT_CLK

tpd1

SYNC, SD_OUT, RESET

SD_IN

Figure 3–4. SYNC, SD_IN, and SD_OUT Timing Waveforms

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