Cirrus-logic CS4397 Manual de usuario descargar pdf (Pagina 13)

CS4397

DS333F1 13

SWITCHING CHARACTERISTICS - CONTROL PORT

= 25 °C; VD = 5.25 V to 3.0 Volts; Inputs: logic 0 = AGND, logic 1 = VD, C

= 30 pF)

Notes: 11. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.

Parameter Symbol Min Max Unit

Mode

SCL Clock Frequency f

scl

- 100 KHz

RST

Rising Edge to Start t

irs

500 - ns

Bus Free Time Between Transmissions t

buf

4.7 - µs

Start Condition Hold Time (prior to first clock pulse) t

hdst

4.0 - µs

Clock Low time t

low

4.7 - µs

Clock High Time t

high

4.0 - µs

Setup Time for Repeated Start Condition t

sust

4.7 - µs

SDA Hold Time from SCL Falling (Note 11) t

hdd

0-µs

SDA Setup time to SCL Rising t

sud

250 - ns

Rise Time of Both SDA and SCL Lines t

-1µs

Fall Time of Both SDA and SCL Lines t

- 300 ns

Setup Time for Stop Condition t

susp

4.7 - µs

buf

hdst

low

hdd

high

sud

sust

susp

Stop Start

Start

Stop

Repeated

SDA

SCL

irs

RST

Figure 4. I

C Control Port Timing

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 33 34

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Cirrus-logic CS4397 Manual de usuario Pagina 13

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