Specifications

PCIe/104 and PCI/104-Express Specification Revision 3.0 February 17, 2015 Page 20
Figure 2-5: Automatic Link Shifting Stack-Down Example Consisting of Two x1 Link Device, One x4 Link Device,
and One Device with One x1 Link and One x4 Link
CPU
1x1 2x1 3x1 4x1 0x4 0x4 0x4 0x4 1x4 1x4 1x4 1x4
x1 Link
Peripheral Module
Automatic Shift
x1 Link
Peripheral Module
Automatic Shift
X4 Link
Peripheral Module
Automatic Shif
t
X4 Link
Peripheral Module
Automatic Shift
x1 Link Device
x4 Link Device
Four x 1 Links Two x4 Links
x4 Link Device
x1 Link Device
x1 Link Device