Cirrus-logic CS2000-CP Manual de usuario descargar pdf (Pagina 11)

CS2000-CP

DS761F2 11

CONTROL PORT SWITCHING CHARACTERISTICS - SPI FORMAT

Inputs: Logic 0 = GND; Logic 1 = VD; C

=20pF.

Notes: 13.

spi

is only needed before first falling edge of CS after power is applied. t

spi

= 0 at all other times.

14. Data must be held for sufficient time to bridge the transition time of CCLK.

15. For f

cclk

< 1 MHz.

Parameter Symbol Min Max Unit

CCLK Clock Frequency f

ccllk

-6MHz

CCLK Edge to CS

Falling (Note 13)t

spi

500 - ns

High Time Between Transmissions t

csh

1.0 - µs

Falling to CCLK Edge t

css

20 - ns

CCLK Low Time t

scl

66 - ns

CCLK High Time t

sch

66 - ns

CDIN to CCLK Rising Setup Time t

dsu

40 - ns

CCLK Rising to DATA Hold Time (Note 14)t

15 - ns

Rise Time of CCLK and CDIN (Note 15)t

- 100 ns

Fall Time of CCLK and CDIN (Note 15)t

- 100 ns

Delay from Supply Voltage Stable to Control Port Ready t

dpor

100 - µs

dsu

sch

scl

CCLK

CDIN

css

csh

spi

dpor

Figure 6. Control Port Timing - SPI Format (Write Only)

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 37 38

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Cirrus-logic CS2000-CP Manual de usuario Pagina 11

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