TMS320VC549 datasheet(25/60 Pages) TI

tên linh kiện	TMS320VC549

Giải thích chi tiết về linh kiện	FIXED-POINT DIGITAL SIGNAL PROCESSOR

PDF	60 Pages

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nhà sản xuất	TI [Texas Instruments]

Trang chủ	http://www.ti.com

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25 / 60 page

TMS320VC549

FIXEDPOINT DIGITAL SIGNAL PROCESSOR

SPRS078F – SEPTEMBER 1998 – REVISED MAY 2000

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

memory and parallel I/O interface timing (continued)

timing requirements for a parallel I/O port read (IOSTRB = 0) [H = 0.5 tc(CO)]†‡ (see Figure 7)

’549-80

’549-100

’549-120

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

ta(A)IO

Access time, read data access from address valid

3H–9

3H–8

ta(ISTRBL)IO

Access time, read data access from IOSTRB low

2H–9

2H–8

2H–7

tsu(D)IOR

Setup time, read data before CLKOUT high

th(D)IOR

Hold time, read data after CLKOUT high

th(ISTRBH-D)R

Hold time, read data after IOSTRB high

† Address and IS timings are included in timings referenced as address.

‡ See Table 1, Table 2, and Table 3 for address bus timing variation with load capacitance.

R/W

IOSTRB

D[15:0]

A[15:0]

CLKOUT

th(A)IOR

td(CLKH-ISTRBH)

th(D)IOR

tsu(D)IOR

ta(A)IO

td(CLKH-ISTRBL)

td(CLKL-A)

ta(ISTRBL)IO

th(ISTRBH-D)R

Figure 7. Parallel I/O Port Read (IOSTRB = 0)

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