CRD44800-ST-FB 查看數據表（PDF） - Cirrus Logic

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CRD44800-ST-FB

6-Channel Digital Amplifier Controller

Cirrus Logic 

CS44600

SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT

(VD = 2.5 V, VDX = VDP = VLS = 3.3 V; VLC = 2.5 V to 5.0 V; Inputs: Logic 0 = GND, Logic 1 = VLC, CL = 30 pF)

Parameter

Symbol

Min

Max

Unit

SCL Clock Frequency

fscl

-

Bus Free Time between Transmissions

tbuf

4.7

Start Condition Hold Time (prior to first clock pulse)

thdst

4.0

Clock Low time

tlow

4.7

Clock High Time

thigh

4.0

Setup Time for Repeated Start Condition

tsust

4.7

SDA Hold Time from SCL Falling

(Note 18) thdd

10

SDA Setup time to SCL Rising

tsud

250

Rise Time of SCL and SDA

tr

-

Fall Time SCL and SDA

tf

-

Setup Time for Stop Condition

tsusp

4.7

100

kHz

-

µs

-

µs

-

µs

-

µs

-

µs

-

ns

-

ns

1000

ns

300

ns

-

µs

18. Data must be held for sufficient time to bridge the transition time, tf, of SCL.

Stop Start

Repeated

Start

SDA

SCL

t buf

t hdst

t high

t hdst

tf

t

low

t hdd

t sud

t sust

tr

Figure 8. Control Port Timing - I²C Format

Stop

t susp

14

DS633F1

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