CS485xx Family Data Sheet

32-bit Audio Decoder DSP Family

16

Copyright 2009 Cirrus Logic, Inc.

DS734F3

CONFIDENTIAL

Parameter

Symbol

Min

Max

Units

maximum speed of the communication port may be limited by the firmware application.

-400

kHz

SCP_CLK low time

1.25

-

µs

SCP_CLK high time

1.25

-

µs

SCP_SCK rising to SCP_SDA rising or falling for START or

STOP condition

1.25

µs

START condition to SCP_CLK falling

1.25

-

µs

SCP_CLK falling to STOP condition

2.5

-

µs

Bus free time between STOP and START conditions

3-

µs

Setup time SCP_SDA input valid to SCP_CLK rising

100

ns

Hold time SCP_SDA input after SCP_CLK falling

20

-

ns

SCP_CLK low to SCP_SDA out valid

-18

ns

SCP_BSY#

SCP_CLK

SCP_SDA

SCP_IRQ#

0

1

6780

1

7

A6

A0

R/W

ACK

LSB

8

ACK

MSB

6