TMS320VC549 datasheet(100/111 Pages) TI

номер детали	TMS320VC549

подробное описание детали	FIXED-POINT DIGITAL SIGNAL PROCESSORS

PDF	111 Pages

Scroll/Zoom	100%

производитель	TI [Texas Instruments]

домашняя страница	http://www.ti.com

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100 / 111 page

TMS320C54x, TMS320LC54x, TMS320VC54x

FIXED-POINT DIGITAL SIGNAL PROCESSORS

SPRS039C – FEBRUARY 1996 – REVISED DECEMBER 1999

100

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

serial-port transmit timing in TDM mode (continued)

timing requirements for serial-port transmit in TDM mode [H = 0.5tc(CO)] (see Figure 39)

’C54x-40

’LC54x-40

’LC54x-50

’54X–66

UNIT

MIN

MAX

MIN

MAX

tc(SCK)

Cycle time, serial-port clock

8H†

‡

16H†

‡

tf(SCK)

Fall time, serial-port clock

tr(SCK)

Rise time, serial-port clock

tw(SCK)

Pulse duration, serial-port clock low/high

4H†

8H†

† When SCK is generated internally, this value is typical.

‡ The serial-port design is fully static and, therefore, can operate with tc(SCK) approaching 1. It is characterized approaching an input frequency

of 0 Hz but tested as a much higher frequency to minimize test time.

B12

B13

B14

tw(SCK)

th(TCH-TDV)

td(TCH-TFV)

TFRM

TADD

TDAT

TCLK

B15

tc(SCK)

td(TC-TDV)

th(TCH-TDV)

td(TCH-TFV)

td(TC-TDV)

tr(SCK)

tf(SCK)

Figure 39. Serial-Port Transmit Timing in TDM Mode

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