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Serial RapidIO
协议解析
1.
物理层特性
1.1
Two
transmitters(short run and long run) and a single
receiver are specified for each of
three baudrates, 1.25, 2.50, and 3.125
GBaud.
1.2
The
short run transmitter should be used mainly for
chip-to-chip connections on either
the
same printed circuit board or across a single
connector.
1.3
The long run transmitter specifications
use larger voltage swings that are capable of
driving
signals
across
backplanes.
This
allows
a
user
to
drive
signals
across
two
connectors and a
backplane.
1.4
The most common equalization techniques
that can be used
?
Pre-emphasis on the transmitter
?
A passive high
pass filter network placed at the receiver. This
is often referred to as
passive
equalization.
?
The
use
of
active
circuits
in
the
receiver.
This
is
often
referred
to
as
adaptive
equalization.
2.
信号定义
Signal pin
descriptions for a RapidIO 1x/4x LP-Serial port.
The interface is defined either as
a
single-
or
four-
lane,
full
duplex,
point-to-point
interface
using
differential
signaling.
A
single-lane
implementation
consists
of
4
wires
and
a
four-lane
implementation
consists
of
16
wires.
3.
Electrical Specifications
3.1
Short Run
Transmitter Specifications
2.5 GBaud
、
3.125
GBaud
特性与
1.25GBaud
Short Run Transmitter AC Timing
Specifications
基本相同,区别在于:
2.5
GBaud UI 400ps
3.125 GBaud UI 320ps
3.2
Long Run Transmitter Specifications
2.5
GBaud
、
3.125
GBaud
特性与
1.25GBaud
Long Run Transmitter AC Timing
Specifications
基本相同,区别在于:
2.5 GBaud UI
400ps
3.125 GBaud UI 320ps
3.3
Receiver
Specifications
2.5
GBaud
、
3.125
GBaud
特性与
1.25GBaud
Receiver
Specifications
基本相同,区别在于:
2.5
GBaud UI 400ps
3.125 GBaud UI 320ps
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