SM8230A

SEIKO NPC CORPORATION —7

GH/GL command (GH3 to GH0, GL3 to GL0)

These bits set the output levels of the high-frequency group and low-frequency group outputs, respectively. The

input code and the corresponding output level are shown in table 4. Note that the 0dB point is typically 93% of

the supply voltage. Any value above 0dB results in amplitude clipping of the output waveform.

Table 4. GH/GL command

GH3/GL3

GH2/GL2

GH1/GL1

GH0/GL0

Output level

0000

−9dB

0001

−8dB

0010

−7dB

0011

−6dB

0100

−5dB

0101

−4dB

0110

−3dB

0111

−2dB

1000

−1dB

1001

0dB

1010

1dB

1011

2dB

1100

3dB

1101

4dB

1110

5dB

1111

6dB