pi2eqx4402d Pericom Semiconductor Corporation, pi2eqx4402d Datasheet - Page 4

• Manufacturer Part Number: pi2eqx4402d
• Description: 2.5 Gbps X2 Lane Serial Pci Express Repeater/equalizer With Signal Detect Feature
• Manufacturer: Pericom Semiconductor Corporation

Pin Description
Output Swing Control
Equalizer Selection
EN_[A, B, C, D]
High
Low
SEL0_[A:D]
SEL3_[A:D]
A9, A10, B9, C9
A1, A2, B2, C2
K5, K6
K7, K8
06-0306
0
0
0
0
1
1
1
1
Pin #
0
0
1
1
H6
H5
K1
GI
HI
J7
Inputs
SEL1_[A:D]
(Continued)
SEL4_[A:D]
Pin Name
[A,B,C,D]
0
0
1
1
0
0
1
1
EN_CLK
OUT0+,
OUT1+,
CKIN+
OUT0-
OUT1-
CKIN-
SD_x
IREF
DO+
DO-
EN_
0
1
0
1
Outputs
O+ / O-
Normal output
No output
SEL2_[A:D]
N/A
I/O
O
O
O
O
O
I
I
I
I
0
1
0
1
0
1
0
1
Positive CMLOutput Channel D with internal 50Ω pull up during normal operation
and 2KΩ pull up otherwise.
Negative CMLOutput Channel D with internal 50Ω pull up during normal opera-
tion and 2KΩ pull up otherwise.
EN_[A:D] is the enable pin with internal 50KΩ pull up resistor. A LVCMOS high
provides normal operation. A LVCMOS low selects a low power down mode.
Differential Input Reference Clock
Differential Reference Clock Output
External 475Ω resistor connection to set the differential output current
Enable output clock pin with internal 50kΩ pull up resistor. When EN_CLK is
LVCMOS high level, the clock output operates normally. When EN_CLK = low,
the clock outputs are turned off for power savings. A clock is not required by the
data channels for operation.
Signal detected, channels A, B, C, D. Indicated a valid signal level on the channels
input pin pair when active high. When low, SD indicates the input signal level is
below the signal detect threshold level.
Swing
0.8x
1.2x
1.4x
1x
No Equalization
[0:1.5dB] @ 1.25 GHz
[0:2.5dB] @ 1.25 GHz
[0:3.5dB] @ 1.25 GHz
[0:4.5dB] @ 1.25 GHz
[0:5.5dB] @ 1.25 GHz
[0:6.5dB] @ 1.25 GHz
[0:7.5dB] @ 1.25 GHz
2.5Gbps x2 Lane Serial PCI Express Repeater / Equalizer
Compliance Channel
4
Output De-emphasis Adjustment
EN_CLK
High
Low
SEL5_[A:D]
0
0
1
1
Inputs
Description
SEL6_[A:D]
0
1
0
1
with Signal Detect feature
Clock Outputs
Clock output
No clock output
PI2EQX4402D
PS8873B
De-emphasis
-2.5dB
-3.5dB
-4.5dB
0dB
11/16/06