Advance Product Information
Subject to Change
VSC7111 Datasheet
Functional Descriptions
Figure 8.
PCIe State Machine
PCIe=0 || LOS=0
RESET
PCIe = 0
IDLE
PCIe = 1 && LOS = 1
LOS FILTER
LOS filtering
period of TBD nS
Delay of TBD nS
between detect cycles
DETECT
DELAY
PCIe=0 || LOS = 0
DELAY
PCIe = 1
LOS = 1
PCIe = 0
PCIe = 0
PCIe = 0
If {rxdetect_result = 10} {
CINPTERM = 1
ACTION
RX DETECT
CINPWROFF = 0
detect_en = 1
}
rxdetect_done = 1
else {
CINTERM
= 0
CINPWROFF = 1
}
EVALUATE
rxdetect_done = 0
detect_en = 0
rxdetect_result =
10 Rx present
11 Rx not present
01 Error condition
00 Error condition
Revision 2.0
September 2010
Confidential
Page 24
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