DS80PCI810 Datasheet, PDF (1/60 Pages) Texas Instruments – Low-Power 8 Gbps 8-Channel Linear Repeater

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DS80PCI810
SNLS493A – OCTOBER 2014 – REVISED JANUARY 2015
DS80PCI810 Low-Power 8 Gbps 8-Channel Linear Repeater
1 Features
•1 Low 70 mW/Channel (Typ) Power Consumption,
With Option to Power Down Unused Channels
• Seamless Link Training Support
• Advanced Configurable Signal Conditioning I/O
– Receive CTLE up to ~10 dB at 4 GHz
– Linear Output Driver
– Variable Output Voltage Range up to 1200
mVp-p
• Automatic Receiver Detect (Hot-Plug)
• Ultra-Low Input-to-Output Latency: 80 ps (Typ)
• Programmable via Pin Selection, EEPROM, or
SMBus Interface
• Single Supply Voltage: 2.5 V or 3.3 V
• 4 kV HBM ESD Rating
• −40°C to 85°C Operating Temperature Range
• Flow-Thru Layout in 10 mm x 5.5 mm 54-Pin
Leadless WQFN Package
• Pin Compatible with DS80PCI800
2 Applications
• PCI Express Gen-1, 2, and 3
• Other Proprietary High Speed Interfaces Up to 8
Gbps
Simplified Functional Block Diagram
INB_0+
.
INB_. _0-
.
.
.
.
INB_3+
INB_3-
OUTB_0+
.
OUTB__.0-
.
.
.
.
.
.
.
OUTB_3+
OUTB_3-
INA_0+
.
INA_. _0-
.
.
.
.
INA_3+
INA_3-
OUTA_0+
.
OUTA__.0-
.
.
.
.
.
.
.
OUTA_3+
OUTA_3-
Address
straps
(pull-up or
pull-down)
SMBus
Slave Mode⁽¹⁾
AD0
AD1
AD2
AD3
READ_EN
2.5V
2.5 V
Mode⁽³⁾
10F 1F
0.1F
(5x)
VIN
VDD_SEL
VDD
ENSMB
SDA⁽²⁾
SCL⁽²⁾
ALL_DONE
GND
VDD
SMBus
Slave Mode⁽¹⁾
To system
SMBus
(1) Schematic requires different connections for SMBus Master Mode and Pin Mode
(2) SMBus signals need to be pulled up elsewhere in the system.
(3) Schematic requires different connections for 3.3 V mode
3 Description
The DS80PCI810 is an extremely low-power high-
performance repeater/redriver designed to support
eight channels carrying high speed interface up to 8
Gbps, such as PCIe Gen-1, 2, and 3. The receiver's
continuous time linear equalizer (CTLE) provides high
frequency boost that is programmable from 2.7 to 9.5
dB at 4 GHz (8 Gbps) followed by a linear output
driver. The CTLE receiver is capable of opening an
input eye that is completely closed due to inter
symbol interference (ISI) induced by interconnect
medium such as board traces or twin axial-copper
cables. The programmable equalization maximizes
the flexibility of physical placement within the
interconnect channel and improves overall channel
performance.
When operating in PCIe applications, the
DS80PCI810 preserves transmit signal
characteristics, thereby allowing the host controller
and the end point to negotiate transmit equalizer
coefficients. This transparency in the link training
protocol facilitates system level interoperability and
minimizes latency.
The programmable settings can be applied easily via
pin control, software (SMBus or I2C), or direct loading
from an external EEPROM. In EEPROM mode, the
configuration information is automatically loaded on
power up, thereby eliminating the need for an
external microprocessor or software driver.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DS80PCI810
WQFN (54)
10 mm x 5.5 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Block Diagram
8
TX
Connector
8
RX
DS80PCI810
ASIC
or
PCIe EP
System Board
Root Complex
8
RX
DS80PCI810
Connector
8
TX
BoTarardce
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.