Справочник Пользователя для Intel 31244 PCI-X
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10.1
Extended Voltage Mode
and
describe the extended voltage mode eye diagrams for
the modified receiver and driver. These eye diagrams needed to be modified from the original
SATA specification to allow for the higher voltage parameters required for a backplane design.
SATA specification to allow for the higher voltage parameters required for a backplane design.
Note:
The material in this section is preliminary.
10.1.1
Extended Voltage Mode Receiver Model
For GD31244 reads, the GD31244 receiver must be more sensitive than the SATA specification.
The extended voltage mode eye diagram for the receiver shown in
The extended voltage mode eye diagram for the receiver shown in
is superimposed on
the SATA specified eye pattern.
provides the same parameters in a table format. These
parameters are measured at the GD31244 RX pins.
Figure 25.
Extended Mode Receiver Example
Table 28.
Extended Voltage Mode Receiver
Parameter
Value
V
diff,rx
+/- 110 mV differential nominal. Measured at GD31244
RX pins on receive side.
Tjitter
0 - 7 UI maximum
Trise/fall (20-80%)
0.3 UI - 0.41 UI
Vmax @ backplane
600-650 mV
Vmin @ backplane
500 mV
B0428-01
0.2
0.15
0.1
0.05
-0.05
100
0
200
300
400
500
600
-0.15
-0.1
-0.2
0
Voltage (V)
Time (ps)
SATA_spec
new_ART_RCV
Specifying a New RCV Eye for Intel
®
31244 Reads