Epson S1C05251 Technical Manual page 15

GLR: Low-Tone Gain Setting Register (Address = 1h)
Bit Bit name
D0 GL0
D1 GL1
D2 GL2
D3 GL3
GHR: High-Tone Gain Setting Register (Address = 2h)
Bit Bit name
D0 GH0
D1 GH1
D2 GH2
D3 GH3
S1C05251 TECHNICAL MANUAL
Table 3.1.3 GLR register
Initial
value
0100 Low-tone filter gain selection
These bits control gain in the 2,130-Hz tone filter.
GL3 GL2 Gain (dB)
0 0
0 1
1 0
1 1
GL1 and GL0 change the gain in increments of 1 dB, whereas GL3 and GL2
change the gain in increments of 4 dB. The alert-tone detection level is attenuated
(sensitivity is lowered) by an amount equal to the total gain set here.
Table 3.1.4 GHR register
Initial
value
0100 High-tone filter gain selection
These bits control gain in the 2,750-Hz tone filter.
GH3 GH2 Gain (dB)
0 0
0 1
1 0
1 1
GH1 and GH0 change the gain in increments of 1 dB, whereas GH3 and GH2
change the gain in increments of 4 dB. The alert-tone detection level is attenuated
(sensitivity is lowered) by an amount equal to the total gain set here.
Description
GL1 GL0
0 0 0
-4 0 1
-8 1 0
-12 1 1
Description
GH1 GH0
0 0 0
-4 0 1
-8 1 0
-12 1 1
EPSON
3 FUNCTIONAL DESCRIPTION
Gain (dB)
0
-1
-2
-3
Gain (dB)
0
-1
-2
-3
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