CS61584A-IQ5Z Cirrus Logic Inc, CS61584A-IQ5Z Datasheet - Page 50

• Manufacturer Part Number: CS61584A-IQ5Z
• Description: IC,Line Interface,QFP,64PIN,PLASTIC
• Manufacturer: Cirrus Logic Inc

Specifications of CS61584A-IQ5Z

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

50
13.2 Power Supply
As shown in Figure 27, the CS61584A operates
from a 3.3 Volt or 5.0 Volt supply. Separate power
and ground pins provide internal isolation. The best
way to configure the power supplies is to connect
all of the supply pins together at the device. The
various ground pins must not be more negative than
AGND. A 4.99 k ±1% resistor must be connected
from BGREF to ground to provide an internal cur-
rent reference.
De-coupling and filtering of the power supplies is
crucial for the proper operation of the analog cir-
cuits. A capacitor should be connected between
each supply and its respective ground. For capaci-
tors smaller than 1 µF, use mylar or ceramic capac-
itors and place them as close as possible to their
respective power supply pins. Wire-wrap bread
boarding of the line interface is not recommended
because lead resistance and inductance defeat the
function of the de-coupling capacitors.
13.3 Quartz Crystal Specifications
When a reference clock signal is not available, a
quartz crystal operating at the 8X rate can be con-
nected across the REFCLK and XTALOUT pins.
The crystal must be AT-cut and fundamental mode.
The minimum specifications are shown in
Table 14. Based on these specifications, quartz
crystals suggested for use with the CS61584A are
shown in Table 15.
13.4 Crystal Oscillator Specifications
When a reference clock signal is not available, a
CMOS crystal oscillator operating at either the 1X
or 8X rate can be connected at the REFCLK pin.
The oscillator must have a minimum symmetry of
40-60% and minimum stability of ±100 ppm for T1
and E1 applications. Based on these specifications,
crystal oscillators suggested for use with the
50
DS261PP5
NOTE: Frequency tolerances are ±32 ppm with a -
40 to +85 °C operating temperature range.
NOTE: Frequency tolerances are ±32 ppm with a -
40 to +85 °C operating temperature range.
All are 8-pin DIP packages and can be tristated.
T1 parallel resonant
frequency
E1 parallel resonant
frequency
Resonant frequency
error (C
Temperature drift
(over system limits)
Drive level
Series resistance
Shunt capacitance
Aging
M-tron
SaRonix
Comclok
CTS
M-tron
SaRonix
Manufacturer
Manufacturer
Parameter
L
Table 16. Suggested Crystal Oscillators
Table 14. Quartz Crystal Specifications
= 20 pF)
Table 15. Suggested Quartz Crystals
CXO-65HG-5-I [phone]
Part Number
Part Number
MH26TAD
NTH250A
SRX5769
SRX5772
SRX5770
SRX5773
CT31CH
397-316
522-372
-100
Min
-50
-5
-
-
-
-
-
12.352
16.384
Typ
-
-
-
-
-
-
ATS-49
through-hole
ATSM-49
surface mount
HC-49S
through-hole
49SMLB
surface mount
[phone]
[phone]
[phone]
Contact Number
CS61584A
CS61584A
Package Type
+100
Max
+50
500
50
+5
7
-
-
DS261PP5
DS261F1
ppm/yr
MHz
MHz
Unit
ppm
ppm
µW
pF