GDC21D003 Datasheet, PDF (77/77 Pages) Hynix Semiconductor – VSB Receiver

9. Application Notes
GDC21D003
Demodulation Chip
VSB Receiver Chip
Transport Chip
SANYO LA7785M
GDC21D003
GDC21D301A
30
IOUT+
29
IOUT-
21
GUP
20
GDN
22
POLN
23
POLP
3.3V
1.5K
7 8 10
1K
3.3K
3.3V
3.3K
1K
SAW
Filter
2.0K
2.2V
0.1uF
1.2V
3.3V
0.1uF
12K
TUNER
3.3V
3.3K
1K
2.7K
0.1uF
1.5V
0.1uF
125
INP
126
INN
80
VSBDATA[7]
77
VSBDATA[6]
52
GUP
75
VSBDATA[5]
53
74
GDN
VSBDATA[4]
43
DATAPOLN
44
DATAPOLP
VSBDATA[3]
VSBDATA[2]
72
71
69
VSBDATA[1]
68
VSBDATA[0]
124
REFP
123
REFN
89
VSBCLK
84
VSBDVALID
83
NVSBERRFLG
2
REF
121
COM_0
128
BIAS
3.3V
0.1uF
AVDD
AVSS
56
NCHGUP
0.1uF
57
NCHGDN
30
FEC_DATA[7]
31
FEC_DATA[6]
36
FEC_DATA[5]
37
FEC_DATA[4]
38
FEC_DATA[3]
39
FEC_DATA[2]
40
FEC_DATA[1]
41
FEC_DATA[0]
32
FEC_CLOCK
43
\D_VAILD
42
\ERR_BLOCK
3.3V
Analog
S/W
6.8K
10K
6.8K
Analog
S/W
0.1uF
VCXO
10K
3.6K
0.01uF
2.2uF
14 18 41 12
OPEN
10.76MHz, 21.52MHz
10.76MHz, 21.52MHz, 43.04MHz & 75.32MHz
Figure 9.1 VSB Receiver Application Circuit
78