CS48DV2B View Datasheet(PDF) - Cirrus Logic
Part Name
Description
Manufacturer
CS48DV2B Datasheet PDF : 26 Pages
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CS48DV2B Data Sheet
32-bit Audio DSP for Dedicated Dolby Volume and Audistry by Dolby
5.12 Switching Characteristics — Serial Control Port - I2C Master Mode
Parameter
SCP_CLK frequency1
SCP_CLK low time
SCP_CLK high time
SCP_SCK rising to SCP_SDA rising or falling for START or
STOP condition
Symbol
fiicck
tiicckl
tiicckh
tiicckcmd
Min
-
1.25
1.25
1.25
Max
Units
400
kHz
-
µs
-
µs
µs
START condition to SCP_CLK falling
SCP_CLK falling to STOP condition
Bus free time between STOP and START conditions
T Setup time SCP_SDA input valid to SCP_CLK rising
F Hold time SCP_SDA input after SCP_CLK falling
SCP_CLK low to SCP_SDA out valid
tiicstscl
tiicstp
tiicbft
tiicsu
tiich
tiicdov
1.25
2.5
3
100
20
-
-
µs
-
µs
-
µs
ns
-
ns
18
ns
A 1. The specification fiicck indicates the maximum speed of the hardware. The system designer should be aware that the actual
DR maximum speed of the communication port may be limited by the firmware application.
tiicckcmd
L I SCP_CLK
IA H tiicstscl
T P SCP_SDA
tiicckl
tiicr
01
6
7
tiicf
8
01
6
7
tiicckh
tiicdov
fiicck
A6
A0 R/W ACK MSB
LSB
EN EL tiicsu
tiich
CONFID D Figure 6. Serial Control Port - I2C Master Mode Timing
tiicckcmd
8
tiicstp
ACK
tiicbf
DS875F2
Copyright 2009 Cirrus Logic
17
CONFIDENTIAL
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