ST5088D View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST5088D' PDF : 33 Pages View PDF
ST5088
Table 7: Control Register CR5 Functions
7 65 4
Transmit amplifier
3210
Sidetone amplifier
Function
0 000
0 dB gain
*
0 001
1 dB gain
-
-
-
-
in 1 dB step
1 111
15 dB gain
0 0 0 0 -8 dB gain
*
0 0 0 1 -9 dB gain
-
-
-
- in 1 dB step
1 1 1 1 -23 dB gain
*: state at power on initialization
Table 8: Control Register CR6 Functions
7 65 4
Earpiece ampifier
3210
Loudspeaker
Function
0 00 0
0 dB gain
*
0 00 1
-1 dB gain
-
-
-
-
in 1 dB step
1 11 1
-15 dB gain
0 0 0 0 0 dB gain
*
0 0 0 1 -2 dB gain
-
-
-
- in 2 dB step
1 1 1 1 -30 dB gain
*: state at power on initialization
Table 9: Control Register CR7 Functions
7 65 4
Tone gain
0 00 0
0 00 1
0 01 0
0 01 1
0 10 0
0 10 1
0 11 0
0 11 1
1 XX 0
1 XX 1
3210
Function
F1 F2 SN DE
Attenuation
f1 Vpp
f2 Vpp
....0 dB *
-3 dB
-6 dB
- 9 dB
-12 dB
-15 dB
-18 dB
-21 dB
-24 dB
-27 dB
...2.4 (1)
1.70
1.20
0.85
0.60
0.43
0.30
0.21
0.15
0.10
....1.9 (1)
1.34
0.95
0.67
0.47
0.34
0.24
0.17
0.12
0.08
00
f1 and f2 muted
*
01
f2 selected
10
f1 selected
11
f1 and f2 in summed mode
0
Squarewave signal selected
*
1
Sinewave signal selected
0 Normal operation
*
1 Tone / Ring Generator connected toTransmit path
*:
state at power on initialization
(1):
value provided if f1 or f2 is selected alone.
if f1 and f2 are selected in the summed mode, f1=1.34 V pp while f2=1.06 Vpp.
Output generator is 2.4 Vpp
X
reserved: write 0
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