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CS49DV8 Datasheet(PDF) 14 Page - Cirrus Logic

Part No. CS49DV8
Description  32-bit Dual Audio DSP Engine
Download  30 Pages
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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CS49DV8 Datasheet(HTML) 14 Page - Cirrus Logic

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Copyright 2008 Cirrus Logic, Inc.
DS868PP2
CS49DV8C Data Sheet
32-bit Audio DSP Family
5.9 Switching Characteristics — Serial Control Port - SPI Slave Mode
.
Figure 3. Serial Control Port - SPI Slave Mode Timing
Parameter
Symbol
Min
Typical
Max
Units
SCP_CLK frequency1
1. The specification fspisck indicates the maximum speed of the hardware. The system designer should be aware that the
actual maximum speed of the communication port may be limited by the firmware application. Flow control using the
SCP_BSY pin should be implemented to prevent overflow of the input data buffer.At boot the maximum speed is
Fxtal/3.
fspisck
-25
MHz
SCP_CS falling to SCP_CLK rising
tspicss
24
-
ns
SCP_CLK low time
tspickl
20
-
ns
SCP_CLK high time
tspickh
20
-
ns
Setup time SCP_MOSI input
tspidsu
5-
ns
Hold time SCP_MOSI input
tspidh
5-
ns
SCP_CLK low to SCP_MISO output valid
tspidov
-11
ns
SCP_CLK falling to SCP_IRQ rising
tspiirqh
-20
ns
SCP_CS rising to SCP_IRQ falling
tspiirql
0ns
SCP_CLK low to SCP_CS rising
tspicsh
24
-
ns
SCP_CS rising to SCP_MISO output high-Z
tspicsdz
-20
ns
SCP_CLK rising to SCP_BSY falling
tspicbsyl
-3*DCLKP+20
ns
SCP_BSY
SCP_CS
SCP_CLK
SCP_MOSI
SCP_MISO
SCP_IRQ
0
1267
0
56
7
tspicss
tspickl
tspickh
tspidsu
tspidh
tspidov
A6
A5
A0
R/W
MSB
LSB
MSB
LSB
tspicsh
tspibsyl
tspiirql
tspiirqh
fspisck
tspicsdz


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