PI2PCIE2442
PCI Express® 2.0, 2-lane Exchange Switch
Features
Description
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Pericom Semiconductor’s PI2PCIE2442 is a differential exchange
switch featuring pass-through pinout. It supports two full PCI
Express lanes operating at 5.0Gbps PCIe® 2.0 performance.
8 Differential Channel (2-lane) Exchange Switch
PCI Express® 2.0 performance, 5.0 Gbps
Low Bit-to-Bit Skew: 10ps (between +/- signals)
Low Crosstalk: -28dB @ 2.5 GHz (5Gbps)
Low Insertion Loss: -2.1dB @ 2.5 GHz (5Gbps)
VDD Operating Range: +1.5V to +1.8V ±10%
ESD Tolerance: 2kV HBM
Packaging: 42-contact TQFN (ZH42)
With the select control input low, Port A connects to Port B, and
Port C connects to port D for an 8-channel differential pass-though.
When the select control input is high Port A connects to Port D,
and Port B connects to Port C.
Truth Table
Function
SEL
OE#
Ax = Bx
Cx = Dx
L
0
Ax = Dx
Cx =Bx
H
0
Ax, Bx, Cx, DX =
Hi-Z
x
1
C3+
C3-
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GND
A1+
5
34
B1+
A1-
6
33
B1-
C1+
7
32
D1+
31
D1-
30
VDD
39
D0-
40
D0+
35
42
36
4
C1-
8
SEL
9
A2+
10
29
B2+
A2-
11
28
B2-
C2+
12
27
D2+
C2-
13
26
D2-
A3+
14
25
B3+
A3-
15
24
B3-
C3+
16
23
D3+
22
D3-
C3-
D3+
D3-
VDD
VDD
B3+
B3-
3
C0-
17
GND
21
A3+
A3-
D2+
D2-
C0+
GND
C2+
C2-
B2+
B2-
B0-
20
A2+
A2-
D1+
D1-
B0+
37
VDD
C1+
C1-
B1+
B1-
38
2
19
A1+
A1-
D0+
D0-
1
A0-
GND
C0+
C0-
A0+
18
A0+
A0-
B0+
B0-
VDD
OE#
SEL
OE#
Pin Diagram
41
Block Diagram
www.pericom.com 03/25/14
PI2PCIE2442
PCI Express® 2.0, 2-lane Exchange Switch
Pin Description
Pin #
1
2
5
6
10
11
14
15
38
37
34
33
29
28
25
24
3
4
7
8
12
13
16
17
36
35
32
31
27
26
23
22
Pin Name
A0+
A0–
A1+
A1–
A2+
A2–
A3+
A3–
B0+
B0−
B1+
B1−
B2+
B2−
B3+
B3−
C0+
C0–
C1+
C1–
C2+
C2–
C3+
C3−
D0+
D0−
D1+
D1−
D2+
D2−
D3+
D3−
I/O
Description
I/O
Signal I/O, Channel 0, Port A
I/O
Signal I/O, Channel 1, Port A
I/O
Signal I/O, Channel 2, Port A
I/O
Signal I/O, Channel 3, Port A
I/O
Signal I/O, Channel 0, Port B
I/O
Signal I/O, Channel 1, Port B
I/O
Signal I/O, Channel 2, Port B
I/O
Signal I/O, Channel 3, Port B
I/O
Signal I/O, Channel 0, Port C
I/O
Signal I/O, Channel 1, Port C
I/O
Signal I/O, Channel 2, Port C
I/O
Signal I/O, Channel 3, Port C
I/O
Signal I/O, Channel 0, Port D
I/O
Signal I/O, Channel 1, Port D
I/O
Signal I/O, Channel 2, Port D
I/O
Signal I/O, Channel 3, Port D
41
OE#
I
9
SEL
I
18, 20, 30, 40, 42
19, 21, 39, Center
Pad
VDD
Pwr
Output Enable, active low. When OE# = 0 the device I/O is enabled. When OE#=1,
all I/O are high impedance
Operation mode Select
(when SEL=0: A→B, C→D, when SEL=1: A→D, C→B)
1.5V to 1.8V (±0.1V) Positive Supply Voltage
GND
Pwr
Power ground
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PI2PCIE2442
PCI Express® 2.0, 2-lane Exchange Switch
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Storage Temperature........................................................ –65°C to +150°C
Supply Voltage to Ground Potential.................................... –0.5V to +2.5V
DC Input Voltage...................................................................–0.5V to VDD
DC Output Current........................................................................... 120mA
Power Dissipation............................................................................... 0.5W
Power Supply Characteristics
Parameters
Test Conditions(1)
Description
IDD
Quiescent Power Supply Current
Note: Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device. This
is a stress rating only and functional operation of the device
at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
Min.
Typ.(2)
VDD = Max., VIN = GND or VDD
Max.
Units
400
µA
Max
Units
0.35 x
VDD
V
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VDD = 1.8V, Ta = 25°C ambient and maximum loading.
DC Electrical Characteristics for Switching over Operating Range
(TA = –40°C to +85°C, VDD = 1.5V to 1.8V ±10%)
Parameter
Description
Test Conditions
Min
Typ(1)
VIH
Input HIGH Voltage, SEL and OE#
Guaranteed HIGH level
VIL
Input LOW Voltage, SEL and OE#
Guaranteed LOW level
VIK
Clamp Diode Voltage, SEL and
OE#
VDD = Max., IIN = –18mA
Input HIGH Current, SEL and OE#
VDD = Max., VIN = VDD
±5
Input LOW Current, SEL and OE#
VDD = Max., VIN = GND
±5
IIH
IIL
0.65 x VDD
–0.5
–0.7
–1.2
VO/VI >95%, RL = 10K-Ohms
–0.4
2.5
VIDC
DC Signal Voltage Range, channel
I/O (Ax, Bx, Cx, Dx)
VO/VI >80%, RL = 50-Ohms
–0.3
1.2
RON
Channel On Resistance
VDD = Min., VIN = 1.3V, IIN =
40mA
Channel On Capacitance
VIN = 0, VDD = 1.8V
CON(AB)
2.2
µA
V
10
Ohm
3.0
pF
Note:
1. Typical values are at VDD = 1.8V, Ta = 25°C ambient and maximum loading.
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PI2PCIE2442
PCI Express® 2.0, 2-lane Exchange Switch
Switching Characteristics
(TA= -40º to +85ºC, VDD = 1.5V to 1.8V ±10%)
Paramenter
Description
Min.
Typ.
Max.
tPZH, tPZL
Line Enable Time - SEL to AN, BN
0.5
8
tPHZ, tPLZ
Line Disable Time - SEL to AN, BN
0.5
8
tb-b
Bit-to-bit skew within same differential pair
4
tch-tch
Channel-to-channel timing skew
35
Units
ns
ps
Dynamic Electrical Characteristics Over the Operating Range
(TA= -40º to +85ºC, VDD = 1.5V to 1.8V ±10%)
Parameter
Description
BW
Bandwidth (-3dB)
Max Signal Frequency Range
VI F
1 dB Compression
Input Signal
P-1dB
RLOSS
Return Loss
XTALK
Crosstalk
OIRR
OFF Isolation
ILOSS
Differential Insertion Loss
Test Conditions
Min.
Typ.(1)
3.4
Insertion loss 1.5dB, VIN=0.6Vpp, DC=0V
1.6
Insertion loss 1.5dB, VIN=0.6Vpp, DC=0.9V
1.6
Insertion loss 3dB, VIN=0.6Vpp, DC=0V
3.0
Insertion loss 3dB, VIN=0.6Vpp, DC=0.9V
3.0
RL = 50, f=625MHz, sin wave, DC=0V
1.2
RL = 50, f=625MHz, sin wave, DC=0.45V
2.0
RL = 50, f=625MHz, sin wave, DC=0.9V
2.4
Max.
Units
GHz
GHz
Vpp
f = 2.5 GHz
-18
f = 2.5 GHz
–28
f = 100 MHz
–60
f = 2.5 GHz
–22
f = 100 MHz
–55
f = 2.5 GHz
-2.1
dB
Notes:
1. Guaranteed by design. Typical values are at VDD = 1.8V, TA = 25°C ambient and maximum loading.
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PI2PCIE2442
PCI Express® 2.0, 2-lane Exchange Switch
Crosstalk (VDD = 1.8V, 25°C)
Differential Off Isolation(VDD = 1.8V, TA = 25°C)
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PI2PCIE2442
PCI Express® 2.0, 2-lane Exchange Switch
Insertion Loss (VDD = 1.8V, 25°C)
Differential Return Loss (VDD = 1.8V, 25°C)
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PI2PCIE2442
PCI Express® 2.0, 2-lane Exchange Switch
+
BALANCED
PORT1
–
+
BALANCED
– PORT2
BALANCED
PORT1
+
–
+
50
–
50
BALANCED
PORT1
BALANCED
PORT2
BALANCED
PORT2
+
–
DUT
+
+ 50
–
– 50
+
+ 50
–
– 50
DUT
Diff. Insertion Loss and Return Test
Circuit
Diff. Off Isolation Test Circuit
Test Circuit for Electrical Characteristics(1-5)
200-Ohm
VIN
D.U.T
VOUT
4pF
CL
RT
Diff. Near End Xtalk Test Circuit
Switch Positions
2 x VDD
VDD
Pulse
Generator
DUT
Test
Switch
tPLZ, tPZL
2 x VDD
tPHZ, tPZH
GND
Prop Delay
Open
200-Ohm
Notes:
1. CL = Load capacitance: includes jig and probe capacitance.
2. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator
3. Output 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
output 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
4. All input impulses are supplied by generators having the following characteristics: PRR ≤ MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns.
5. The outputs are measured one at a time with one transition per measurement.
Switching Waveforms
VDD
SEL
VDD/2
VDD/2
0V
Output
tPZL
tPLZ
VDD/2
VOH
VOL +0.3V
tPHZ
tPZH
VOH –0.3V
VDD/2
VOL
VOH
VOL
Output
Voltage Waveforms Enable and Disable Times
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PI2PCIE2442
PCI Express® 2.0, 2-lane Exchange Switch
Packaging Mechanical: 42-Contact TQFN (ZH)
Notes:
1. All dimensions are in millimeters. Angles in degrees.
2. Coplanarity applies to the exposed pad as well as the terminals.
3. Refer JEDEC MO-220.
4. Recommended land pattern is for reference only.
5. Thermal pad soldering area
DATE: 11/14/12
DESCRIPTION: 42-contact Thin Fine Pitch Quad Flat No-Lead (TQFN)
PACKAGE CODE: ZH42
DOCUMENT CONTROL #: PD-2035
REVISION:D
12-0529
• For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php
Ordering Information
Ordering Code
PI2PCIE2442ZHEX
Package Code
Package Description
ZH
42-contact, Thin Fine Pitch Quad Flat No-Lead (TQFN)
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
2. E = Lead-free and green
2. X suffix = tape and reel
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
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All trademarks are property of their respective owners.
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