Instruction Manual

CS48DV2B Data Sheet
32-bit Audio DSP for Dedicated Dolby Volume and Audistry by Dolby
12 Copyright 2009 Cirrus Logic DS875F2
CONFIDENTIAL
CONFIDENTI
A
L
DRA
FT
D
ELPHI
5.6 Switching Characteristics— RESET
Figure 1. RESET Timing
5.7 Switching Characteristics — XTI
Figure 2. XTI Timing
Parameter Symbol Min Max Unit
RESET
minimum pulse width low T
rstl
1-ms
All bidirectional pins high-Z after
RESET low T
rst2z
-100ns
Configuration pins setup before RESET
high T
rstsu
50 - ns
Configuration pins hold after RESET
high T
rsthld
20 - ns
Parameter Symbol Min Max Unit
External Crystal operating frequency
1
1. Part characterized with the following crystal frequency values: 11.2896, 12.288, 18.432, 24.576, & 27 MH.z
F
xtal
11.2896 27 MHz
XTI period T
clki
33.3 100 ns
XTI high time T
clkih
13.3 - ns
XTI low time T
clkil
13.3 - ns
External Crystal Load Capacitance (parallel resonant)
2
2. C
L
refers to the total load capacitance as specified by the crystal manufacturer. Crystals that require a C
L
outside this range should
be avoided. The crystal oscillator circuit design should follow the crystal manufacturer’s recommendation for load capacitor
selection.
C
L
10 18 pF
External Crystal Equivalent Series Resistance ESR 50 Ω
RESET
T
rst2z
T
rstl
T
rstsu
T
rsthld
HS[3:0]
A
ll Bidirectional
Pins
t
clkih
t
clkil
T
clki
X
TI