Related information
1.3 The N1 SDP at a glance
2.11.3
IOFPGA LEDs
The IOFPGA drives green LEDs on the N1 board to indicate
Cache-Coherent Interconnect for
Accelerators
(CCIX) and
Chip to Chip
(C2C) activity. Removing the side panel provides access to the
LEDs which are near the edge of the board.
IOFPGA LEDs
There are eight LEDs and the IOFPGA uses the bottom six to indicate
Link Training and Status State
Machine
(LTSSM) status as follows.
Table 2-14 IOFGPA LEDs
LED6 LED5 LED4 LED3 LED2 LED1 Hex LTSSM state number Indicates
Off
Off
Off
Off
Off
Off
0x0
No Linkup and LTSSM in reset
Off
Off
Off
Off
Off
On
0x1
×1-Gen 1
Off
Off
Off
Off
On
Off
0x2
×1-Gen 2
Off
Off
Off
Off
On
On
0x3
×1-Gen 3
Off
Off
Off
On
Off
Off
0x4
×1-Gen 4
Off
Off
Off
On
Off
On
0x5
×2-Gen 1
Off
Off
Off
On
On
Off
0x6
×2-Gen 2
Off
Off
Off
On
On
On
0x7
×2-Gen 3
Off
Off
On
Off
Off
Off
0x8
×2-Gen 4
Off
Off
On
Off
Off
On
0x9
×4-Gen 1
Off
Off
On
Off
On
Off
0xA
×4-Gen 2
Off
Off
On
Off
On
On
0xB
×4-Gen 3
Off
Off
On
On
Off
Off
0xC
×4-Gen 4
Off
Off
On
On
Off
On
0xD
×8-Gen 1
Off
Off
On
On
On
Off
0xE
×8-Gen 2
Off
Off
On
On
On
On
0xF
×8-Gen 3
Off
On
Off
Off
Off
Off
0x10
×8-Gen 4
Off
On
On
Off
Off
Off
0x18
×16-Gen 1
Off
On
On
On
Off
Off
0x1C
×16-Gen 2
Off
On
On
On
On
Off
0x1E
×16-Gen 3
Off
On
On
On
On
On
0x1F
×16-Gen 4
2 Hardware description
2.11 LEDs, switches, and buttons
101489_0000_02_en
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