SAA2520 Datasheet, PDF (31/36 Pages) NXP Semiconductors – Stereo filter and codec for MPEG layer 1 audio applications

Philips Semiconductors
Stereo filter and codec for MPEG layer 1
audio applications
Preliminary specification
SAA2520
AC CHARACTERISTICS
T_amb = −40 to 85 °C; V_DD = 3.8 to 5.5 V unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS MIN.
TYP.
Inputs
C_I
input capacitance
−
−
X24IN and X22IN
f
crystal frequency at X22OUT,
note 1
21
22.5792
CLK22
f
crystal frequency at X24OUT,
note 1
23
24.576
CLK24
gm
mutual conductance
A_v
small signal gain
C_fb
feedback capacitance
C_O
output capacitance
100 kHz
1.5
−
A_v = gm.R_o 3.5
−
−
−
−
−
Outputs
C_O
output capacitance
−
−
Inputs URDA, RESET, LTDATA, LTCLK, LTENA, LTCNT0, LTCNT1
t_SU
setup time to X24IN
t_HD
hold time to X24IN
15
−
60
−
Outputs LTDATA, MUTEDAC, DEEMDAC, ATTDAC, SYNCDAI, FDIR, FRESET
t_d
propagation delay from X24IN
−
−
Inputs FDAF, FDAC, SDA, SCL, SWS
t_SU
setup time to FS256
t_HD
hold time to FS256
15
−
25
−
Outputs FDAF, FDAC, SDA, SCL, SWS, FSYNC
t_d
propagation delay from FS256
−
−
Inputs SBDA, SBCL, SBWS, URDA, SBDIR, SBEF
t_SU
setup time to SBMCLK
t_HD
hold time to SBMCLK
15
−
25
−
Outputs SBDA, SBCL, SBWS
t_d
propagation delay from SBMCLK
−
−
FS256
T
FS256 cycle time
T
FS256 cycle time
T
FS256 cycle time
T_C
SCL cycle time
f_s = 48 kHz −
f_s = 44.1 kHz −
f_s = 32 kHz −
−
81.4
88.6
122.1
4T
MAX. UNIT
10
pF
24
MHz
26
MHz
−
mA/V
−
V/V
5
pF
10
pF
10
pF
−
ns
−
ns
80
ns
−
ns
−
ns
50
ns
−
ns
−
ns
50
ns
−
ns
−
ns
−
ns
−
ns
August 1993
31