CXD3018Q/R
$3F8 (preset: $3F8800)
D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
1
0
0
0
SYG3 SYG2 SYG1 SYG0 FIFZB3 FIFZB2 FIFZB1 FIFZB0 FIFZA3 FIFZA2 FIFZA1 FIFZA0
SYG3 to SYG0: These simultaneously set the focus drive, tracking drive and sled drive output gains. See the
$CX commands for the spindle drive output gain setting.
SYG3 SYG2 SYG1 SYG0
GAIN
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0 (–∞dB)
0.125 (–18.1dB)
0.250 (–12.0dB)
0.375 (–8.5dB)
0.500 (–6.0dB)
0.625 (–4.1dB)
0.750 (–2.5dB)
0.875 (–1.2dB)
1.000 (0.0dB)
1.125 (+1.0dB)
1.250 (+1.9dB)
1.375 (+2.8dB)
1.500 (+3.5dB)
1.625 (+4.2dB)
1.750 (+4.9dB)
1.875 (+5.5dB)
: preset
FIFZB3 to FIFZB0:
This sets the slice level at which FZC changes from high to low.
FIFZA3 to FIFZA0:
This sets the slice level at which FZC changes from low to high.
The FIFZB3 to FIFZB0 and FIFZA3 to FIFZA0 setting values are valid only when $3A FIFZC is 1.
Set so that the FIFZB3 to FIFZB0 ≤ FIFZA3 to FIFZA0.
Hysteresis can be added to the slice level by setting FIFZB3 to FIFZB0 < FIFZA3 to FIFZA0.
FIFZB3 to FIFZB0 or FIFZA3 to FIFZA0 setting value
FZC slice level =
× 0.5 × VDD [V]
32
– 122 –
ETC [ ETC ]
