TYPICAL APPLICATION CIRCUIT - Adjustment Free Multi-standard Serial To Parallel Convertor
Vcc
100nF
8.2nH
Vcc
1uF
Serial Data
Output
100nF
1uF
75
SDO
SDO
VEE
VCC
Vcc
37.5
SDI
SDI
VEE
RSET
Vcc
LOCK
Vcc
150
Vcc
Vcc
CD
Vcc
150
CLK_EN
150
CLK_EN
Vcc
Vcc
100nF
Vcc
Vcc
100
100
44 43 42 41 40 39 38 37 36 35 34
DDI
VEE
SDO
SDO
VEE
1
2
33
32
31
4
3
2
1
28 27 26
100
DDI
SDI
SDI
SCI
SCI
SS1
SS0
SSC
PD7
PD6
PD5
PD4
PD3
PD2
PD1
Vcc
5
6
Serial Data Input
25
24
23
22
21
20
19
100
100
100
100
100
100
100
VCC_75
VCC
3
4
30
29
28
27
26
25
24
23
7
VEE
SCO
SCO
VEE
NC
GS9000D
5
8
10n
10n
GS7025
(2)
75
SDI
6
9
SDI
7
10
11
VCC
75
Vcc
37.5
8
Vcc
VEE
NC
12 13 14 15 16 17 18
9
Vcc
Vcc
CD_ADJ
AGC-
270
NC
10
11
Vcc
12 13 14 15 16 17 18 19 20 21 22
Vcc
100k
Pot
Vcc
68k
1.8k
100pF
15nF
*
Vcc
3.3pF
NOTE: Value of SDO and SCO
pull-up resistors is 90.9Ω 1ꢀ
(1) Typical value for input return loss matching
(2) The GS7025 can be replaced by either the GS9025A or GS9035A for
applications at data rates less then 270Mb/s or when equalization is not required
Fig. 11
GS9000D and GS7025 INTERCONNECTIONS
Figure 11 shows an application of the GS9000D in a
270Mb/s serial to parallel converter. This circuit uses the
GS7025 Serial Digital Receiver. For datarates below 270Mb/s
the GS9025A can be used. If cable equalization is not
required the GS7025 or GS9025A may be replaced with a
GS9035A Reclocker IC.
The GS9028 Cable Equalizer allows a serial loop through
after the reclocker.
8 of 9
GENNUM CORPORATION
18784 - 3
GENNUM [ GENNUM CORPORATION ]
