CS4811MXR-01 查看數據表（PDF） - Cirrus Logic

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CS4811MXR-01

Fixed Function Multi-Effects Audio Processor

Cirrus Logic 

CS4811

SWITCHING CHARACTERISTICS - CONTROL PORT - I2C MASTER (TA = 25° C;

VA, VD = 5 V; Inputs: logic 0 = DGND, logic 1 = VD, CL = 30 pF)

Parameter

Symbol

Min

Typ

Max Units

I2C® Master (Self-Boot) Mode (SPI/I2C = 1, SCPM/S = 1) (Note 11)

SCL Clock Frequency

fscl

Clock Low Time

tlow

Clock High Time

thigh

Bus Free Time Between Transmissions

tbuf

RST rising to start condition

tirs

Start Condition Hold Time

thdst

Setup Time for Repeated Start Condition

tsust

SDA Setup Time to SCL Rising

tsud

SDA Hold Time from SCL Falling

(Note 12) thdd

SCL falling to SDA Output Valid

tcldv

SCL and SDA Rise Time

(Note 13)

tr

SCL and SDA Fall Time

(Note 13)

tf

Setup Time for Stop Condition

tsusp

-

-

-

4.7

-

4.0

13.5

250

0

-

-

-

4.7

Fs

-

kHz

1/(2*Fs)

-

µs

1/(2*Fs)

-

µs

-

-

µs

22

-

µs

-

-

µs

-

-

µs

-

-

ns

-

-

ns

-

1.5

µs

-

1

µs

-

300

ns

-

-

µs

Notes: 11. Use of the I2C bus interface requires a license from Philips. I2C is a registered trademark of Philips

Semiconductors.

12. Data must be held for sufficient time to bridge the worst case fall time of 300 ns for CCLK/SCL.

13. For both SDA transmitting and receiving.

RST

t irs

Stop

Start

tcldv

Repeated

Start

SDA

t buf

t hdst

t high

t hdst

tf

SCL

(output)

t low t hdd

t sud

t sust

tr

Figure 2. I2C Control Port Timing

8

Stop

t susp

DS486PP2

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