PI2EQX3431 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – 3.2Gbps, 1-port, SATA2/SAS Re-Driver

Features
• Two 3.2Gbps differential signal pairs
• Adjustable Receiver Equalization
• 100-Ohm Differential CML I/O’s
• Independent Output Level Control
• Input signal level detect and squelch for each channel
• OOB Support
• Low Power (100mW per Channel)
• Stand-by Mode – Power Down State
• V_CC Operating Range: 1.8V ±0.1V
• Packaging: — 20-TQFN (3.5x 4.5mm)
PI2EQX3431
3.2Gbps, 1-port, SATA2/SAS Re-Driver
Description
Pericom Semiconductor’s PI2EQX3431 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. PI2EQX3431 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 flexibility 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 xIN+/-) 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
x_IN+
x_IN ^–
x_EQ
CE
Equalizer
Limiting
Amp
- Repeated 2 times -
Power
Management
Pin Description (Top Side View)
x_SD
CML
x_OUT+
x_OUT–
S_ES
F_SD
1 20
2
19
VDD
3
18
F_IN+ ₄
17
F_IN- ⁵
VDD
6
R_OUT+
7
GND ¹⁶
15
14
R_OUT-
8
13
R_SD
9
12
10 11
CE
VDD
F_OUT+
F_OUT-
VDD
R_IN+
R_IN-
NC
08-0094
1
PS8950A
04/30/08