DLPA2000 datasheet(18/63 Pages) TI

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6.9 DMD Low-Speed Interface Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER(3)

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOH(DC)

DC output high voltage for DMD_LS_WDATA

and DMD_LS_CLK

0.7 ×

VCC18

VOL(DC)

DC output low voltage for DMD_LS_WDATA

and DMD_LS_CLK

0.3 ×

VCC18

VOH(AC) (1)

AC output high voltage for DMD_LS_WDATA

and DMD_LS_CLK

0.8 ×

VCC18

VCC18 +

0.5

VOL(AC) (2)

AC output low voltage for DMD_LS_WDATA

and DMD_LS_CLK

–0.5

0.2 ×

VCC18

Slew rate

DMD_LS_WDATA and DMD_LS_CLK

VOL(DC) to VOH(AC) for rising edge

and VOH(DC) to VOL(AC) for rising

edge

1.0

3.0

V/ns

DMD_DEN_ARSTZ

VOL(AC) to VOH(AC) for rising edge

0.25

DMD_LS_RDATA

0.5

(1)

VOH(AC) maximum applies to overshoot. When the DMD_LS_WDATA and DMD_LS_CLK lines include a proper 43-Ω series termination

resistor, the DMD operates within the LPSDR input AC specifications.

(2)

VOL(AC) minimum applies to undershoot. When the DMD_LS_WDATA and DMD_LS_CLK lines include a proper 43-Ω series

termination resistor, the DMD operates within the LPSDR input AC specifications.

(3)

See Figure 6-3 for DMD_LS_CLK, and DMD_LS_WDATA rise and fall times. See Figure 6-4 for DMD_DEN_ARSTZ rise and fall times.

LS_CLK, LS_WDATA

100

tRISE

tFALL

VOH(AC)

VOL(AC)

VOH(DC)

VOL(DC)

Figure 6-3. LS_CLK and LS_WDATA Slew Rate

DMD_DEN_ARSTZ

100

tRISE

tFALL

VOH(AC)

VOL(AC)

Figure 6-4. DMD_DEN_ARSTZ Slew Rate

DLPC3420

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