AMX DESIGN XPRESS V 1.5 - PROGRAMMER GUIDE User's Guide Page 125

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Chapter 7: IP Core Interfaces 7–27
Cyclone V Hard IP for PCI Express
December 2013 Altera Corporation Cyclone V Hard IP for PCI Express
User Guide
Figure 7–29 illustrates the timing relationship between
npor
and the LTSSM L0 state.
dl_ltssm[4:0]
O
LTSSM state: The LTSSM state machine encoding defines the following states:
00000: detect.quiet
00001: detect.active
00010: polling.active
00011: polling.compliance
00100: polling.configuration
00101: polling.speed
00110: config.linkwidthstart
00111: config.linkaccept
01000: config.lanenumaccept
01001: config.lanenumwait
01010: config.complete
01011: config.idle
01100: recovery.rcvlock
01101: recovery.rcvconfig
01110: recovery.idle
01111: L0
10000: disable
10001: loopback.entry
10010: loopback.active
10011: loopback.exit
10100: hot.reset
10101: L0s
10110: L1.entry
10111: L1.idle
11000: L2.idle
11001: L2.transmit.wake
11010: recovery.speed
Table 7–6. Reset and Link Training Signals (Part 3 of 3)
Signal I/O Description
Figure 7–29. 100 ms Requirement
npor
IO_POF_Load
PCIe_LinkTraining_Enumeration
dl_ltssm[4:0]
detect.
quiet
detect.active
polling.active
L0
100 ms (maximum)
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