Cirrus Logic CS42L42 Manual page 13

Table 3-4. Output Fault Rating
Test conditions: GNDA =GNDCP= 0 V; VA =1.8 V; VP =3.6 V; voltages are with respect to ground.
Source
HPOUT(A,B)
HS3/HS4 (HSx switch to ground)
HS3/HS4 (HSx switches to HSBIAS)
HS3_REF/HS4_REF (HSx connected to ground)
HS3_REF/HS4_REF (HSx not connected to ground)
1.Each source is individually connected directly to the specified supply during a fault condition.
2.The rating is based on foundry electromigration design rules when a perpetual fault exists on the HP outputs. When the specified time expires, analog
performance is expected to degrade.
3.HPOUTx = 1 Vrms. If shorted to HSx, the headphone may be current limited in this configuration.
Table 3-5. Combined High-Performance ADC On-Chip Analog and Digital Filter Characteristics
Test conditions (unless specified otherwise): T
All gains are set to 0 dB; HPF disabled.
Notch filter on Passband (normalized to 0.417x10
(ADC_NOTCH_
DIS = 0)
Passband ripple (0.417x10
Stopband attenuation 1 (0.5 Fs
Stopband attenuation 2 (0.524 Fs
Total group delay
Notch filter off Passband (normalized to 0.417x10
(ADC_NOTCH_
DIS = 1)
Passband ripple (0.417x10
Stopband attenuation (0.64 Fs
Total group delay
1.Response scales with Fs (internal sample rate, based on MCLK). Specifications are normalized to Fs
int
2.Measurements with HPF disabled require either differential configuration or single-ended configuration with –30 dBFS input signal.
3.Informational only; group delay cannot be measured for this block by itself.Total group delay includes delay through the entire ADC and decimator
path total-group delay is measured at 1 kHz.
Table 3-6. ADC High-Pass Filter (HPF) Characteristics
Test conditions (unless specified otherwise): ADC_HPF_CF = 00; all gains are set to 0 dB;
entire path with ADC_NOTCH_DIS = 1, SRC_ADC_BYPASS = 1, ADC_WNF_EN = 0, and ADC_HPF_EN = 1.
Passband (normalized to 0.2083 FS
Phase deviation @ 0.453 x 10
3
Filter settling time
1.Response scales with Fs (based on internal MCLK). Specifications are normalized to Fs
INT
2.An additional –2° phase deviation may be present through the total path from HSIN to SDOUT.
3.Required time for the magnitude of the DC component present at the output of the HPF to reach 5% of the applied DC signal.
Table 3-7. Combined DAC Digital, On-Chip Analog, and HPOUTx Filter Characteristics
Test conditions (unless specified otherwise): T
HPOUTx, analog and digital gains are all set to 0 dB; HPF disabled.
Passband
Passband ripple (0.417x10 –3
Stopband attenuation (0.545
Fs
Total group delay 2
1. Response scales with Fs (based on internal MCLK). Specifications are normalized to Fs
INT
2.Informational only; group delay cannot be measured for this block by itself. An additional
and internal audio bus.
DS1083F2
1
= +25°C; MCLK = 12 MHz; MCLK_SRC_SEL = 0; Fs
A
Parameter 1,2
–3 Fs
INT
–3 Fs to 0.390 Fs
INT
to 0.524 Fs
INT
to 3 Fs
INT
3
–3
Fs
INT
–3
Fs to 0.417 Fs
INT
to 3 Fs
INT
3
Parameter 1
)
INT
–3 INT [2]
Fs
ADC_HPF_CF = 00 (38.8 x 10
ADC_HPF_CF = 01 (2.5 x 10
ADC_HPF_CF = 10 (4.9 x 10
ADC_HPF_CF = 11 (9.7 x 10
= +25°C; MCLK = 12 MHz, MCLK_SRC_SEL = 0, Fs
A
1
Parameter
to 0.417 ; normalized to 0.417x10
Fs Fs
INT INT
to )
Fs
INT INT
Fault Supply
VA
GNDA
+VCP_FILT
–VCP_FILT
VP
HPOUT(A,B) 3
HPOUT(A,B) 3
HPOUT(A,B)
HPOUT(A,B)
) –0.18-dB corner
–3.0-dB corner
; normalized to 0.417x10
INT
)
INT
)
INT
) –0.05-dB corner
–3.0-dB corner
; normalized to 0.417x10
INT
)
INT
specifications represent the frequency response of the
–0.05-dB corner
–3.0-dB corner
–6
x Fs mode)
INT
–3 x mode)
Fs
INT
–3 x mode)
Fs
INT
–3
x Fs mode)
INT
and are denormalized by multiplying by Fs
INT
–0.05-dB corner
–3.0-dB corner
–3 )
Fs
INT
and denormalized by multiplying by Fs
INT
/
5.5 Fs
3 Characteristics and Specifications
Expected Years
1.5
2
0.5
1.5
1.5
3.2
0.75
3.2
0.75
= 48 kHz; path is HSIN to internal routing engine.
INT
Min Typical
— 0.390
— 0.410
–3 Fs ) –0.23 —
int
45 —
70 —
— 5.6/Fs
int
— 0.390
— 0.500
–3
Fs ) –0.29 —
INT
70 —
— 5.6/Fs
int
and are denormalized by multiplying by Fs
int
Minimum Typical
— 0.666 x 10 –3
— 77.0 x 10 –6
— 12.37
— 2900/ Fs
INT
— 170/
Fs
INT
— 90/
Fs
INT
— 50/ Fs
INT
= 48 kHz; path is internal routing engine to
INT
Minimum Typical
— 0.48
— 0.50
–0.04 —
60 —
— 5.35/
Fs
INT
INT
group delay may be present through
int
CS42L42
2
Max Unit
— Fs
int
— Fs
int
0.15 dB
— dB
— dB
— s
— Fs
int
— Fs
int
0.15 dB
— dB
— s
.
int
Maximum Unit
—
Fs
INT
—
Fs
INT
— Deg
— s
— s
— s
— s
.
INT
Maximum Unit
—
Fs
INT
— Fs
INT
0.063 dB
— dB
— s
.
the serial ports
13