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Pericom Semiconductor Corporation

PI2EQX3211B Datasheet Preview

PI2EQX3211B Datasheet

3.2Gbps 2 Differential Channel Serial Re-driver

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PI2EQX3211B
3.2Gbps 2 Differential Channel Serial Re-driver
with Equalization, Squelch and Flow-Through Pinout
Features
• SATA s/m output drive
• Two 3.2Gbps differential channels
• Adjustable Receiver Equalization
• 100Ω Differential CML I/O’s
• Input signal level detect and squelch for each channel
• Low Power (100mW per Channel)
• Stand-by Mode – Power Down State
• VCC Operating Range: 1.8V ±0.1V
• Packaging (Pb-free & Green):
— 20-lead SSOP
Description
Pericom Semiconductor’s PI2EQX3211B is a low power, signal
re-driver. The device provides programmable equalization, by
using 2 select bits, EQA and EQB, to optimize performance
over a variety of physical mediums by reducing Inter-Symbol
Interference. PI2EQX3211B supports two 100 Differential CML
data I/O’s between the Protocol ASIC to a switch fabric, across
a backplane, or to extend the signals across other distant data
pathways on the user’s platform.
The integrated equalization circuitry provides exibility with
signal integrity of the signal before the re-driver. Whereas the
integrated de-emphasis circuitry provides exibility with signal
integrity of the signal after the re-driver.
A low-level input signal detection and output squelch function
is provided for each channel. Each channel operates fully
independantly. When the channels are enabled (EN=1) and
operating, that channels input signal level (on xI+/-) determines
whether the output is enabled. If the input level of the channel
falls below the active threshold level (Vth-) then the outputs are
driven to the common mode voltage.
In addition to providing signal re-conditioning, Pericom’s
PI2EQX3211B also provides power management Stand-by mode
operated by the Enable pin.
Block Diagram
Signal Detection
CML
xl+
xl-
EQx
Equalizer
Limiting
Amp
-Repeated 2 times-
Power
EN Management
07-0193
Pin Description
CML
xO+
xO-
1
EQA
VDD
AI+
AI-
GND
VDD
BO+
BO-
GND
EQB
1
2
3
4
5
6
7
8
9
10
20 EN
19 VDD
18 AO+
17 AO-
16 GND
15 VDD
14 BI+
13 BI-
12 GND
11 NC
PS8901A
08/23/07




Pericom Semiconductor Corporation

PI2EQX3211B Datasheet Preview

PI2EQX3211B Datasheet

3.2Gbps 2 Differential Channel Serial Re-driver

No Preview Available !

www.DataSheet4U.com
Pin Description
Pin #
Pin Name
3 AI+
4 AI-
18 AO+
17 AO-
14 BI+
13 BI-
7 BO+
8
20
5, 9, 12, 16
1
10
2, 6, 11, 15, 19
BO-
EN
GND
EQA
EQB
VDD
PI2EQX3211B
3.2Gbps 2 Differential Channel Serial Re-driver
Equalization, Squelch and Flow-Through Pinout
I/O
I
I
O
O
I
I
O
O
I
PWR
I
I
PWR
Description
Positive CML Input Channel A with internal 50Ω pull down
Negative CML Input Channel A with internal 50Ω pull down
Positive CML Output Channel A with internal 50Ω pull up to VDD during normal
operation and 2kΩ when EN=0. Drives to output common mode voltage when
input is <VTH–.
Negative CML Output Channel A with internal 50Ω pull up to VDD during normal
operation and 2kΩ when EN=0. Drives to output common mode voltage when
input is <VTH–.
Positive CML Input Channel B with internal 50Ω pull down
Negative CML Input Channel B with internal 50Ω pull down
Positive CML Output Channel B with internal 50Ω pull up to VDD during normal
operation and 2kΩ when EN=0. Drives to output common mode voltage when
input is <VTH–.
Negative CMLOutput Channel B with internal 50Ω pull up to VDD during normal
operation and 2kΩ when EN=0. Drives to output common mode voltage when
input is <VTH–.
EN is the enable pin. A LVCMOS high provides normal operation. A LVCMOS
low selects a low power down mode.
Supply Ground
Selection pins for equalizer (see Equalizer Selection Table)
w/ 50KΩ internal pull up
1.8V Supply Voltage
Equalizer Selection
EQx Compliance Channel
0 [0:2.5dB] @ 1.6 GHz
1 [4.5:6.5dB] @ 1.6 GHz
07-0193
2
PS8901A
08/23/07


Part Number PI2EQX3211B
Description 3.2Gbps 2 Differential Channel Serial Re-driver
Maker Pericom Semiconductor Corporation
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