Real-Time Clock (Hps); Sfp - Intel Arria 10 User Manual

5. Board Components
683227 | 2023.07.12

5.9.8. Real-Time Clock (HPS)

Note:

5.9.9. SFP+

Table 40.
FPGA Pin Assignment
AW36
AW37
AT30
AT31
AW32
AW33
AU32
AU33
AR29
AR28
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The HPS system has a battery-backed real-time clock (RTC) connected through the
2
I C interface. The RTC is implemented using a DS1339 device from Maxim
Semiconductor. The device has a built-in power sense circuit that detects power
failures and automatically switches to the backup battery supply, maintaining time.
The device uses an Energizer 357-303HVZ Lithium coin battery with a nominal voltage
of 1.55V.
A battery for the RTC is not shipped with the development kit.
The development board include two SFP+ ports that use two transceiver channels
from the FPGA. These ports take in serial data from the FPGA and transforms it into
optical signals. Both SFP+ ports are active and include the SFP+ cage assembly.
SFP+ FPGA Transceiver Pin Assignments
Schematic Signal Name
SFPB_TX_N
SFPB_TX_P
SFPB_RX_N
SFPB_RX_P
SFPA_TX_N
SFPA_TX_P
SFPA_RX_N
SFPA_RX_P
LMK_SFPCLK_P
LMK_SFPCLK_N
Direction
Output SFP+ B Transmitter
Output SFP+ B Transmitter
Input SFP+ B Receiver
Input SFP+ B Receiver
Output SFP+ A Transmitter
Output SFP+ A Transmitter
Input SFP+ A Receiver
Input SFP+ A Receiver
Input SFP+ clock reference from
clock cleaner
Input SFP+ clock reference from
clock cleaner
® ®
Intel Arria 10 SoC Development Kit User Guide
Description
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