pi2eqx4432d Pericom Semiconductor Corporation, pi2eqx4432d Datasheet

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pi2eqx4432d

Manufacturer Part Number
pi2eqx4432d
Description
2-lane Pci Express Redriver/equalizer With Flow-through Pinout
Manufacturer
Pericom Semiconductor Corporation
Datasheet

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Features
• Two High Speed PCI Express lanes
• Supports PCI Express data rates (2.5 Gbps) on each lane
• Adjustable Receiver Equalization
• Input Signal Level Detect & Output Squelch on all Channels
• Output De-emphasis = -3.5dB
• 100–Ohm Differential CML I/O’s
• Low Power (100mW per Channel)
• Standby Mode – Power Down State
• V
• Packaging (Pb-free & Green): 48-contact TQFN
Block Diagram
xl+
xl–
DD
SEL–EQ_x
07-0106
Operating Range: 1.8V +/-0.1V
CLK–
CLK+
Signal Detect
EN_X
Equalizer
– – Repeat 4 Times – –
EN_CLK
Limiting
Clock
Amp
Management
Buffer
Power
IREF
SEL–OL_x
SEL–DE_x
CLKO+
CLKO–
CML
2.5 Gbps x2 Lane PCI Express Repeater/Equalizer
xO+
xO–
1
with Signal Detect and Flow-Through Pinout
Pin Description (Top View)
Description
Pericom Semiconductor’s PI2EQX4432D is a low power,
PCI Express compliant signal Re-Driver. The device provides
programmable equalization, to optimize performance by reducing
Inter-Symbol Interference (ISI). PI2EQX4432D supports two
100−Ohm Differential CML data I/O’s between the Protocol
ASIC to a switch fabric, across a backplane, or extends the signals
across other distant data pathways on the user’s platform.
The integrated equalization circuitry provides fl exibility with
signal integrity of the PCI Express signal before the Re-Driver.
Whereas the integrated de-emphasis circuitry provides fl exibility
with signal integrity of the PCI Express 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
independantly. When a channel is enabled (EN_x=1) and
operating, that channels input signal level (on xl+/-) determines
whether the output is enabled. If the input level of the channel
falls below the active threshold level (Vth-) then the output driver
switches off, and the pin is pulled to VDD via a high impedance
resistor.
In addition to providing serial re-conditioning, Pericom's
PIEQX4432D also provides a power management Stand-by mode
operated by the enable pins.
AI+
AI–
VDD
BO+
BO–
VDD
CI+
CI–
VDD
DO+
DO–
VDD
10
11
12
48 47 46 45 4443 42 41 40 39 38 37
1
2
3
4
5
6
7
8
9
13 14 15 16 1718 19 20 21 22 23 24
GND
PI2EQX4432D
36
35
34
33
32
31
30
29
28
27
26
25
PS8888A
AO+
AO–
VDD
BI+
BI–
VDD
CO+
CO–
VDD
DI+
DI–
GND
04/26/07

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pi2eqx4432d Summary of contents

Page 1

... Gbps x2 Lane PCI Express Repeater/Equalizer with Signal Detect and Flow-Through Pinout Description Pericom Semiconductor’s PI2EQX4432D is a low power, PCI Express compliant signal Re-Driver. The device provides programmable equalization, to optimize performance by reducing Inter-Symbol Interference (ISI). PI2EQX4432D supports two 100−Ohm Differential CML data I/O’s between the Protocol ASIC to a switch fabric, across a backplane, or extends the signals across other distant data pathways on the user’ ...

Page 2

... Enable Clock input with 50K–Ohm pull-up. When EN_CLK is LVCMOS high level, the clock output operates normally. When EN_CLK = low, the clock outputs are I turned off for power savings. A clock is not required bt the data channels for opera- tion. 2 PI2EQX4432D with Signal Detect and Flow-through Pinout Description PS8888A 04/26/07 ...

Page 3

... Conditions All Enables = LVCMOS High All Enables = LVCMOS Low From input to output 50 MHz to 1.25 GHz EN_x = High Total Jitter Deterministic jitter 3 PI2EQX4432D Equalizer Selection SEL−EQ_[A:D] Compliance Channel 0 [0:2.5dB] @ 1.25 GHz 1 [0:6.5dB] @ 1.25 GHz Note: Stresses greater than those listed under MAX I MUM RAT- INGS may cause permanent damage to the de vice ...

Page 4

... Signal Detect and Flow-through Pinout FR4 A B SmA SmA Connector Connector ≤ 30IN ( 70˚C) Conditions Differential Swing | TX-D+ TX- TX-D+ TX-D- (1) 20% to 80% Single ended TX-DIFFP-P TX-D+ 4 PI2EQX4432D C Pericom Re–Driver Out In Min. Typ. Max. 400 900 0.3 150 100 120 75 200 - V | 0.8 1.8 TX-D- 0.65 × ...

Page 5

... Figure 2. Confi guration test load board termination Note: • TLA and TLB are 3” transmission lines. 07-0106 2.5Gbps x2 Lane PCI Express Repeater / Equalizer with Signal Detect and Flow-through Pinout (V = 1.8 ±0.1V Parameters (1) (2) 5 PI2EQX4432D (3) = 1.8 ±0.1V) Min Max. Units 125 525 ps 75 660 900 -200 mV ...

Page 6

... Lane PCI Express Repeater / Equalizer with Signal Detect and Flow-through Pinout DESCRIPTION: 48-Contact, Thin Fine Pitch Quad Flat No-Lead (TQFN) PACKAGE CODE: ZD (ZD48) DOCUMENT CONTROL #: PD-2045 Package Code ZD Pb-free & Green 48-contact TQFN 6 PI2EQX4432D DATE: 03/10/06 REVISION: A Package Description PS8888A 04/26/07 ...

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