CS48540-CQZ Cirrus Logic Inc, CS48540-CQZ Datasheet - Page 13

• Manufacturer Part Number: CS48540-CQZ
• Description: Audio DSPs High Perform. 32-Bit Audio Decoder DSP
• Manufacturer: Cirrus Logic Inc

Specifications of CS48540-CQZ

• Operating Supply Voltage: 1.8 V
• Mounting Style: SMD/SMT
• Package / Case: LQFP-48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.8 Switching Characteristics — Internal Clock
5.9 Switching Characteristics — Serial Control Port - SPI Slave Mode
DS734F3
Internal DCLK frequency
Internal DCLK period
SCP_CLK frequency
SCP_CS# falling to SCP_CLK rising
SCP_CLK low time
SCP_CLK high time
Setup time SCP_MOSI input
Hold time SCP_MOSI input
SCP_CLK low to SCP_MISO output valid
SCP_CLK falling to SCP_IRQ# rising
SCP_CS# rising to SCP_IRQ# falling
SCP_CLK low to SCP_CS# rising
SCP_CS# rising to SCP_MISO output high-Z
SCP_CLK rising to SCP_BSY# falling
1. After initial power-on reset, F
1. The specification f
the next power-on reset.
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 F
Parameter
spisck
1
1
Parameter
1
indicates the maximum speed of the hardware. The system designer should be aware that the actual
dclk
= F
xtal
. After initial kickstart commands, the PLL is locked to max F
Copyright 2009 Cirrus Logic, Inc.
CS4852x-CQZ
CS4854x-CQZ
CS4856x-CQZ
CS4854x-DQZ
CS4856x-DQZ
CS4852x-CQZ
CS4854x-CQZ
CS4856x-CQZ
CS4854x-DQZ
CS4856x-DQZ
Symbol
t
t
t
t
t
t
t
spicbsyl
f
t
spicsdz
t
t
t
spidsu
spidov
spiirqh
spisck
spicss
spickh
spicsh
spiirql
spickl
spidh
CONFIDENTIAL
Min
Symbol
24
20
20
24
DCLKP
5
5
0
-
-
-
-
-
F
dclk
3
*
DCLKP+20
Typical
20
F
F
F
F
F
Min
6.7
6.7
6.7
6.7
6.7
32-bit Audio Decoder DSP Family
xtal
xtal
xtal
xtal
xtal
-
-
dclk
xtal
CS485xx Family Data Sheet
/3.
and remains locked until
.
Max
1/F
1/F
1/F
1/F
1/F
25
20
Max
11
150
150
150
150
150
-
-
-
-
-
-
xtal
xtal
xtal
xtal
xtal
Units
MHz
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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