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PDF PI2EQX3202B Data sheet ( Hoja de datos )
| Número de pieza | PI2EQX3202B | |
| Descripción | Serial Re-Driver | |
| Fabricantes | Pericom Semiconductor Corporation | |
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PI2EQX3202B
3.2Gbps, 4 Differential Channel, Serial Re-Driver
with Equalization, De-emphasis, and Squelch
Features
• Supports data rates up to 3.2Gbps on each lane
• Optimized for SATA i/m operation
• Adjustable Transmiter De-Emphasis & Amplitude
• Adjustable Receiver Equalization
• Two Spread Spectrum Reference Clock Buffer Outputs
• Optimized for SATA applications
• Input signal level detection & output squelch on all channels
• 100-Ohm Differential CML I/O’s
• Low Power (100mW per Channel)
• Standby Mode – Power Down State
• VDD Operating Range: 1.5V to 1.8V
• Packaging (Pb-free & Green): 84-ball LFBGA (NB84)
Description
Pericom Semiconductor’s PI2EQX3202B is a low power, signal
Re-Driver. The device provides programmable equalization,
amplification, and de-emphasis by using 7 select bits, SEL[0:6],
to optimize performance over a variety of physical mediums by
reducing Inter-symbol Interference. PI2EQX3202B supports four
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. Whereas the
integrated de-emphasis circuitry provides flexibility with signal
integrity of the signal after the Re-Driver.
A low-level input signal detection and output squelch function
is provided for all four channels. Each channel operates fully
independently. When a channel is enabled (EN_x=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
PI2EQX3202B also provides power management Stand-by mode
operated by an Enable pin.
Block Diagram
CML
xI+
xI-
SEL [0:2]
EN_x
CKIN-
CKIN+
Signal Detection
LVCMOS
SD_x
Equalizer
Limiting
Amp
CML
xO+
xO-
Power
Management
SEL [2]_ x SEL [3]_ x
-- Repeated 2 times --
Buffer
IREF
OUT-
EN_ OUT+
CLK
Pin Description
1 2 3 4 5 6 7 8 9 10
A SD_C SD_D SEL0_A SEL0_B SEL4_A SEL4_B SEL6_A SEL6_B EN_A EN_B
B VDD
SD_B
VDD SEL1_A SEL2_A SEL3_A SEL5_A VDD
EN_C
VDD
C BO+
SD_A
AI+ SEL1_B SEL2_B SEL3_B SEL5_B
BI+
EN_D AO+
D BO–
VDD
AI–
E GND VDD GND
F VDD GND VDD
G DO+ SEL0_C CI+
84-Ball LFBGA
BI–
GND
AO–
GND
GND
GND
VDD GND VDD
DI+ SEL6_C CO+
H DO– SEL0_D CI–
VDD CKIN+ CKIN– GND
DI– SEL6_D CO–
J GND SEL1_C GND SEL2_C SEL2_D SEL3_D IREF
GND SEL4_D GND
K EN_CLK SEL1_D SEL3_C SEL4_C OUT0+ OUT0– OUT1+ OUT1– SEL5_C SEL5_D
08-0103
1
PS8885G
04/30/08
1 page  
www.DataSheet4U.com
PI2EQX3202B
3.2Gbps, 4 Differential Channel, Serial Re-Driver
with Equalization, De-emphasis, and Squelch
Signal
Source
FR4
AB
SmA
Connector
SmA
Connector
30IN
Pericom
Re-Driver
In Out
C
Figure 1. Test Condition Referenced in the Electrical Characteristic Table
AC/DC Electrical Characteristics (VDD = 1.4V to 1.9V)
Symbol
Parameter
Conditions
CML Transmitter Output (100-Ohm differential)
VDIFFP
Output Voltage Swing
| VTX-D+ - VTX-D- |
VTX-DIFFP-P
Output Voltage Swing
| VTX-D+ - VTX-D- |
VTX-C(4)
Common-Mode Voltage
tF, tR
ZOUT
ZTX-DIFF-DC
CTX
Transition Time
Output Resistance
DC Differential TX Impedance
AC Coupling Capacitor
LVCMOS Control Pins
| VTX-D+ - VTX-D- | / 2
20% to 80%(1)
Single-ended
VIH Input High Voltage
VIL Input Low Voltage
IIH Input High Current
IIL Input Low Current
LVCMOS Outputs
VOH
Output HIGH Voltage
IOH = -10mA
VOL
Output LOW Voltage
IOL = 10mA
Note:
1. Using K28.7 (0011111000) pattern)
2. When 0.8x swing selected
3. When 1.4x swing selected
4. The parameter is determined by device characterization, and is not production tested
Min. Typ. Max. Units
200 600 mVp-p
400(2)
1200(3) mVp-pd
VDD -
0.3
150
40 50
60
80 100 120
75 200
ps
Ω
Ω
nF
0.65 ×
VDD
VDD-
0.4
VDD
0.35 ×
VDD
250
500
V
μA
V
0.4 V
08-0103
5
PS8885G
04/30/08
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet PI2EQX3202B.PDF ] | |
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