TMS320 datasheet(26/69 Pages) TI

26 / 69 page

TMS32020

SPRS010B — MAY 1987 — REVISED NOVEMBER 1990

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77001

SERIAL PORT TIMING

switching characteristics over recommended operating conditions (see Note 3)

PARAMETER

MIN

TYP

MAX

UNIT

td(CH-DX)

DX valid after CLKX rising edge (see Note 10)

100

td(FL-DX)

DX valid after FSX falling edge (TXM = 0, see Note 10)

td(CH-FS)

FSX valid after CLKX rising edge (TXM = 1)

NOTES: 3. Q = 1/4tc(C).

10. The last occurrence of FSX falling and CLKX rising.

timing requirements over recommended operating conditions (see Note 3)

MIN

NOM

MAX

UNIT

tc(SCK)

Serial port clock (CLKX/CLKR) cycle time

390

20 000†

tf(SCK)

Serial port clock (CLKX/CLKR) fall time

50‡

tr(SCK)

Serial port clock (CLKX/CLKR) rise time

50‡

tw(SCK)

Serial port clock (CLKX/CLKR) low pulse duration (see Note 11)

150

12 000

tw(SCK)

Serial port clock (CLKX/CLKR) high pulse duration (see Note 11)

150

12 000

tsu(FS)

FSX/FSR setup time before CLKX/CLKR falling edge (TXM = 0)

th(FS)

FSX/FSR hold time after CLKX/CLKR falling edge (TXM = 0)

tsu(DR)

DR setup time before CLKR falling edge

th(DR)

DR hold time after CLKR falling edge

† Value derived from characterization data; minimum fsx at test = 825 kHz.

‡ Value derived from characterization data and not tested.

NOTES: 3. Q = 1/4tc(C).

11. The duty cycle of the serial port clock must be within 40-60%.

TMS320 Datasheet(PDF) 26 Page - Texas Instruments

TMS320 Datasheet(HTML) 26 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69

Datasheet Download

Link URL