– 187 –
CXD3068Q
$3D (preset: $3D 00 00)
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
SFID SFSK THID THSK
0
TLD2 TLD1 TLD0
0
0
0
0
0
0
0
0
SFID:
SLED servo filter input can be obtained not from SLD in Reg, but from M0D, which is the TRK
filter second-stage output.
When the low frequency component of the tracking error signal obtained from the RF amplifier
is attenuated, the low frequency can be amplified and input to the SLD servo filter.
SFSK:
Only during TRK servo gain up2 operation, coefficient K30 is used instead of K00. Normally,
the DC gain between the TE input pin and M0D changes for TRK filter gain normal and gain
up2, creating a difference in the DC level at M0D. In this case, the DC level of the signal
transmitted to M00 can be kept uniform by adjusting the K30 value even during the above
switching.
THID:
TRK hold filter input can be obtained not from SLD in Reg, but from M0D, which is the TRK
filter second-stage output.
When signals other than the tracking error signal from the RF amplifier are input to the SE
input pin, the signal transmitted from the TE pin can be obtained as the TRK hold filter input.
THSK:
Only during TRK servo gain up2 operation, coefficient K46 is used instead of K40. Normally,
the DC gain between the TE input pin and M0D changes for TRK filter gain normal and gain
up2, creating a difference in the DC level at M0D. In this case, the DC level of the signal
transmitted to M18 can be kept uniform by adjusting the K46 value even during the above
switching.
∗
See "§ 5-20. Filter Composition" regarding the SFID, SFSK, THID and THSK commands.
TLD0 to 2:
This turns on and off SLD filter correction independently of the TRK filter.
See $38 (TLC0 to 2) and Fig. 5-3.
TLC0
0
1
—
0
1
OFF
ON
OFF
OFF
ON
ON
TLD0
VC level correction
TRK filter
SLD filter
∗
: preset, —: don't care
∗
TLC1
0
1
—
0
1
OFF
ON
OFF
OFF
ON
ON
TLD1
Tracking zero level correction
TRK filter
SLD filter
∗
TLC2
0
1
—
0
1
OFF
ON
OFF
OFF
ON
ON
TLD2
Traverse center correction
TRK filter
SLD filter
∗
Summary of Contents for PV420S
Page 1: ...SERVICE MANUAL PV420S WWW BBK RU ...
Page 72: ... 69 CXD3068Q Block Diagram ...
Page 73: ... 70 CXD3068Q Pin Configuration ...
Page 122: ... 119 CXD3068Q Timing Chart 1 3 ...
Page 123: ... 120 CXD3068Q Timing Chart 1 4 ...
Page 124: ... 121 CXD3068Q Timing Chart 1 5 ...
Page 129: ... 126 CXD3068Q Timing Chart 2 1 ...
Page 130: ... 127 CXD3068Q Block Diagram 2 2 ...
Page 131: ... 128 CXD3068Q Timing Chart 2 3 ...
Page 134: ... 131 CXD3068Q Timing Chart 2 6 ...
Page 138: ... 135 CXD3068Q VCO C Mode Fig 3 3 Access Flow Chart Using VCO Control ...
Page 140: ... 137 CXD3068Q Block Diagram 4 1 ...
Page 143: ... 140 CXD3068Q Timing Chart 4 4 ...
Page 147: ... 144 CXD3068Q Fig 4 6 a Auto Focus Flow Chart Fig 4 6 b Auto Focus Timing Chart ...
Page 148: ... 145 CXD3068Q Fig 4 7 a 1 Track Jump Flow Chart Fig 4 7 b 1 Track Jump Timing Chart ...
Page 149: ... 146 CXD3068Q Fig 4 8 a 10 Track Jump Flow Chart Fig 4 8 b 10 Track Jump Timing Chart ...
Page 150: ... 147 CXD3068Q Fig 4 9 a 2N Track Jump Flow Chart Fig 4 9 b 2N Track Jump Timing Chart ...
Page 151: ... 148 CXD3068Q Fig 4 10 a Fine Search Flow Chart Fig 4 10 b Fine Search Timing Chart ...
Page 152: ... 149 CXD3068Q Fig 4 11 a M Track Move Flow Chart Fig 4 11 b M Track Move Timing Chart ...
Page 157: ... 154 CXD3068Q Fig 4 15 CD TEXT Data Timing Chart ...
Page 162: ... 159 CXD3068Q Fig 5 3a Fig 5 3b ...
Page 196: ... 193 CXD3068Q Description of Data Readout ...
Page 200: ... 197 CXD3068Q ...
Page 201: ... 198 CXD3068Q ...
Page 202: ... 199 CXD3068Q ...
Page 207: ... 204 CXD3068Q Package Outline Unit mm ...
Page 208: ...This data sheet has been made from recycled paper to help protect the environment 205 ...