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Pericom Semiconductor Corporation

PI2EQX3231BL Datasheet Preview

PI2EQX3231BL Datasheet

1-port SATA2 I/m ReDriver

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Features
• SATA2 i, m; external SATA2
• Two 3.0Gbps differential signal pairs
• Adjustable Receiver Equalization
• 100-Ohm Differential CML I/O’s
• Independent Output Emphasis Control
• Input signal level detect and squelch for each channel
• OOB Support
• Low Power (100mW per Channel)
• Stand-by Mode – Power Down State
• VDD Operating Range: 1.5V to 1.8V
• Packaging: — 20-TQFN (3.5x 4.5mm)
PI2EQX3231BL
3.0Gbps, 1-port, SATA2 i/m Re-Driver
Description
Pericom Semiconductor’s PI2EQX3231BL is a low power,
signal Re-Driver. The device provides programmable
equalization, to optimize performance over a variety of
physical mediums by reducing Inter-Symbol Interference.
PI2EQX3231BL supports two 100-Ohm 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.
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 (CE=1) and
operating, that channels input signal level (on xI+/-) determines
whether the output is active. If the input signal level of the channel
falls below the active threshold level (Vth-) then the outputs are
driven to the common mode voltage.
In addition to signal conditioning, when CE = 0, the device
enters a low power standby mode.
Block Diagram
Signal Detection
CML
XI+
XI
x_EQ
CE
Equalizer
Limiting
Amp
- Repeated 2 times -
Power
Management
Pin Diagram (Top Side View)
CML
XO+
XO
x_EM
VDD
AI+
AI-
GND
VDD
BO+
BO-
VDD
1 20
2 19
3 18
4 17
5
GND
16
6 15
7 14
8 13
9 12
10 11
CE
AO+
AO-
GND
VDD
BI+
BI-
GND
08-0328
1
PS8997B
12/04/08




Pericom Semiconductor Corporation

PI2EQX3231BL Datasheet Preview

PI2EQX3231BL Datasheet

1-port SATA2 I/m ReDriver

No Preview Available !

www.DataSheet4U.com
Pin Description
Pin #
Pin Name
20 A_EM
1 A_EQ
3 AI+
4 AI-
18 AO+
17 AO-
10 B_EQ
11
14
13
7
8
19
5, 12, 16, Center
Pad
2,6, 9,15
B_EM
BI+
BI-
BO+
BO-
CE
GND
VDD
PI2EQX3231BL
3.0Gbps, 1-Port, SATA2 i/m Re-Driver
Type
Input
Input
Input
Description
Selection pin for channel A output Emphasis adjustment. (See output Emphasis
Adjustment table). With internal 50K-Ohm pull-up resistor.
Selection pin for equalizer of Ain. (See Input Equalizer Adjustment table.)
With internal 50K-Ohm pull-up resistor.
CML input forward channel A with internal 50-Ohm pull down.
Output
Input
Input
Input
CML output channel A with internal 50-Ohm pull up.
Selection pin for equalizer of B_IN. (See Input Equalizer Adjustment table.)
With internal 50K-Ohm pull-up resistor.
Selection pin for channel B output Emphasis adjustment. (See output Emphasis
Adjustment table). With internal 50K-Ohm pull-up resistor.
CML input return channel B with internal 50-Ohm pull down.
Output
Input
GND
Power
Positive CML output channel B with internal 50-Ohm pull up.
Chip Enable "high" provides normal operation. "Low" for power down mode.
With internal 50K-Ohm pull-up resistor.
Supply ground.
1.5V to 1.8V supply voltage (±0.1V)
Input Equalizer Adjustment
x_EQ
Compliance Channel @ 1.5 GHz
0 1.5dB ± 1.0dB
1 5.5dB ± 1.0dB
Output Emphasis Adjustment
x_EM
Compliance Channel @ 1.5GHz
0 0dB
1 -3.5dB
08-0328
2
PS8997B
12/04/08


Part Number PI2EQX3231BL
Description 1-port SATA2 I/m ReDriver
Maker Pericom Semiconductor Corporation
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