qlx4600-s30 Intersil Corporation, qlx4600-s30 Datasheet - Page 21

• Manufacturer Part Number: qlx4600-s30
• Description: Quad Lane Extender
• Manufacturer: Intersil Corporation

Typical Application Reference Designs
Figures 33 and 34 show reference design schematics for a QLx4600-S30 evaluation board with an SMA connector
interface. Figure 33 shows the schematic for the case when the equalizer boost level is set via the CP pins. Figure 34
shows the schematic for the case when the level is set via the serial bus interface.
FIGURE 34. APPLICATION CIRCUIT FOR THE QLx4600-S30 EVALUATION BOARD USING THE SERIAL BUS
Impedance Select (Channels 1 and 2)
(*100pF capacitor should be positioned closest to the pin )
Bypass circuit for each V
INTERFACE FOR SETTING THE EQUALIZER COMPENSATION LEVEL
1.2V
DD
pin: 4, 7, 10, 29, 32, 35
21
1.2V
Detection threshold
reference current
IN3[P]
IN3[N]
IN4[P]
IN4[N]
IN1[P]
IN1[N]
IN2[P]
IN2[N]
GND
1.2V
1.2V
1.2V
IS1
IS2
DT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
QLx4600-S30
QLx4600-S30
A) DC Blocking Capacitors = X7R or COG
0.1μF (>4GHz bandwidth)
= SMA Connector
NC
NC
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
(Continued)
BGREF
OUT1[P]
OUT1[N]
1.2V
OUT2[P]
OUT2[N]
1.2V
OUT3[P]
OUT3[N]
1.2V
OUT4[P]
OUT4[N]
IS3
IS4
MODE
6kΩ
MODE at 1.2V: Serial Control Mode
MODE at GND: Binary Control Mode
A
Impedance Select (Channels 3 and 4)
LANE EXTENDER
Serial Control Mode
QLx4600-S30
Reference
Quellan , Inc.
November 19, 2009
FN6979.1