PI3EQX4951ST Datasheet, PDF (1/9 Pages) Pericom Semiconductor Corporation – 3.3V, 1-port, SATA2 i/m ReDriver with Analog/Digital Configuration

PI3EQX4951ST
3.3V, 1-port, SATA2 i/m ReDriver™ with Analog/Digital Configuration
Features
ÎÎSATA2 i, m; external SATA2
ÎÎTwo 3.0Gbps differential signal pairs
ÎÎIndependent Digital Output Emphasis Control
ÎÎ100-Ohm Differential CML I/O’s
ÎÎInput signal level detect and squelch for each channel
ÎÎOOB Support
ÎÎEnhanced Mode Features:
àà Adjustable Receiver Equalization
àà Independent Analog Output Emphasis Control
ÎÎHigh impedance I/O termination in standby mode
ÎÎLow Power Operation: 300mW typical
ÎÎAuto-Slumber Mode: 33mW typical
ÎÎPower down Stand-by Mode: 0.1mW
ÎÎSupply Voltage: 3.3V ±10%
ÎÎPackaging: 20-TQFN (4x4mm)
Description
Pericom Semiconductor’s PI3EQX4951ST is a low power, signal
ReDriver™. The device provides programmable equalization, to
optimize performance over a variety of physical mediums by
reducing Inter-Symbol Interference. PI3EQX4951ST 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 sig-
nals across other distant data pathways on the user’s platform.
The integrated equalization circuitry provides flexibility with
signal integrity of the signal before the ReDriver.
A low-level input signal detection and output squelch function is
provided for each channel. Each channel operates fully indepen-
dently. When the channels are enabled (EN=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 EN = 0, the device
enters a low power standby mode.
Block Diagram
Signal Detection
CML
xl+
xl-
EN
Equalizer
Limiting
Amp
- Repeated 2 times -
Power
Management
Control
Circuit
Pin Diagram (Top Side View)
Standard Mode (MODE = 0)
CML
xO+
xO-
x_EQ
x_EM
AI+
AI-
NC
BO-
BO+
20 19 18 17 16
1
15
2
14
3
GND
13
4
12
5
11
6 7 8 9 10
AO+
AO-
NC
BI-
BI+
Enhanced Mode (MODE = 1)
AI+
AI-
NC
BO-
BO+
20 19 18 17 16
1
15
2
14
3
GND ¹³
4
12
5
11
6 7 8 9 10
AO+
AO-
NC
BI-
BI+
10-0142
1
www.pericom.com
PS9072A
03/23/10