AT78C1507 ATMEL Corporation, AT78C1507 Datasheet - Page 9

• Manufacturer Part Number: AT78C1507
• Description: DVD/CD Read Channel
• Manufacturer: ATMEL Corporation

Figure 5. AT78C1507 – Tracking Error Path
2054A–DVD–07/02
TEMB
Pin 25
Outrigger
TEG1\I2VLOG
Reg 68 <3:0>
Signals
REFBACK
Reg 56<2>
TRI2VHIG
25
24
TP2
P/N
SE
P/N
P/N
P/N
28
"E"
"F"
"G"
"H"
Reg 66 <2>
POLMB
From 1503
10/11
4/5
8/9
6/7
12V
TEG1\I2VHIG
Reg 68 <7:4>
Sample
SHSB
Sample
Sample
Sample
& Hold
& Hold
& Hold
& Hold
21
Reg 56 <0>
SELTE
Reg 68 <7:4>
GSELMB
Reg 49<7:4>
D2SE
D2SE
D2SE
D2SE
GSEL
Outrigger Tracking Error
Reg 66<1>
ENMB
Reg 49<3:0>
BW/LPF
BWSEL
BW/LPF
BW/LPF
BW/LPF
Reg 57 <2:0>
SGNTEOFF
Reg 56 <1>
Reg 32 <6>
TEOFF
IDINT
+
TP2
TP2
TP2
TP2
SE
SE
SE
SE
30
31
32
29
V21
V21
V21
V21
Offset
DC
Vref
Reg. 51–58 <7:3>
Reg 69 <3:0>
TEGOUT
Gain &
Gain &
Gain &
Gain &
VGA
DVD/CD Read Channel
Offset
Offset
Offset
Offset
Adj
Adj
Adj
Adj
100 kHz
LPF
Main Beam
Reg. 62–65
(E+F) − (G+H)
Normalization
+
TP2
SUMSB
SE
25
(−)
(+)
28
29
TE
9