CS48540-CQZ Cirrus Logic Inc, CS48540-CQZ Datasheet - Page 15

• 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

5.11 Switching Characteristics — Serial Control Port - I
DS734F3
SCP_CLK frequency
SCP_CLK low time
SCP_CLK high time
SCP_SCK rising to SCP_SDA rising or falling for
START or STOP condition
START condition to SCP_CLK falling
SCP_CLK falling to STOP condition
Bus free time between STOP and START conditions
Setup time SCP_SDA input valid to SCP_CLK rising
Hold time SCP_SDA input after SCP_CLK falling
SCP_CLK low to SCP_SDA out valid
SCP_CLK falling to SCP_IRQ# rising
NAK condition to SCP_IRQ# low
SCP_CLK rising to SCB_BSY# low
SCP_MISO
SCP_MOSI
1. The specification f
SCP_CLK
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.
EE_CS#
t
spicsl
iicck
1
Parameter
f
indicates the maximum speed of the hardware. The system designer should be aware that the actual
spisck
t
spicss
Figure 4. Serial Control Port - SPI Master Mode Timing
A6
t
spidsu
0
A5
t
1
spidh
Copyright 2009 Cirrus Logic, Inc.
2
t
spickh
t
spickl
A0
CONFIDENTIAL
6
t
spidov
Symbol
t
iicckcmd
t
t
t
t
t
iicstscl
t
t
R/W
t
t
f
t
iicirqh
iicbsyl
iicckh
iicdov
iicstp
iicirql
iicckl
t
iicck
iicbft
iicsu
iich
7
MSB
MSB
1.25
1.25
1.25
1.25
Min
100
0
2.5
20
3
-
-
-
-
2
C Slave Mode
3
3
5
*
*
DCLKP + 20
DCLKP + 20
Typical
6
32-bit Audio Decoder DSP Family
LSB
LSB
CS485xx Family Data Sheet
7
3
*
DCLKP + 40
Max
400
t
spidz
18
-
-
-
-
-
-
t
t
spicsx
spicsh
Units
kHz
µs
µs
µs
µs
µs
µs
ns
ns
ns
ns
ns
ns
15