ST5090 ST Microelectronics, ST5090 Datasheet - Page 11

• Manufacturer Part Number: ST5090
• Description: LOW VOLTAGE 14-BIT LINEAR CODEC WITH HIGH-PERFORMANCE AUDIO FRONT-END
• Manufacturer: ST Microelectronics

Table 7: Control Register CR5 Functions
*: state at power on initialization
Table 8: Control Register CR6 Functions
*: state at power on initialization
Table 9: Control Register CR7 Functions
*:
(2):
X
7
0
0
1
7
0
0
1
7
0
0
0
0
0
0
0
0
1
1
-
-
Transmit amplifier
Earpiece ampifier
Tone gain
[EARA]
X
X
6
0
0
1
6
0
0
1
6
0
0
0
0
1
1
1
1
-
-
state at power on initialization
if f1 and f2 are selected in the summed mode, f1=0.89 V
reserved: write 0
value provided if f1 or f2 is selected alone.
X
X
5
0
0
1
5
0
0
1
5
0
0
1
1
0
0
1
1
-
-
4
0
1
1
4
0
1
1
4
0
1
0
1
0
1
0
1
0
1
-
-
Extra amplifier [EXTA]
F1
3
0
0
1
3
0
0
1
3
0
0
1
1
-
-
Sidetone amplifier
F2
0
1
0
1
2
0
0
1
2
0
0
1
2
-
-
SN
1
0
0
1
1
0
0
1
1
0
1
-
-
DE
0
0
1
1
0
0
1
1
0
0
1
-
-
f1 and f2 muted
f2 selected
f1 selected
f1 and f2 in summed mode
Squarewave signal selected
Sinewave signal selected
Normal operation
Tone / Ring Generator connected to
Transmit path
0 dB gain
1.5 dB gain
in 1.5 dB step
22.5 dB gain
-12.5 dB gain
-13.5 dB gain
-27.5 dB gain
0 dB gain
-2 dB gain
-30 dB gain
0 dB gain
-2 dB gain
-30 dB gain
in 1 dB step
in 2 dB step
in 2 dB step
Attenuation
....0 dB *
-12 dB
-15 dB
-18 dB
-21 dB
-24 dB
-27 dB
- 9 dB
-3 dB
-6 dB
pp
while f2=0.7 V
pp
.
Function
Function
Function
...1.6(2)
f1 V
0.066
pp
1.26(2)
f2 V
0.053
*
*
*
*
*
*
*
ST5090
pp
11/29