Altera 100G Development Kit, Stratix IV GT Edition - Manual (Page 48)

2–40 Chapter 2: Board Components
Components and Interfaces
100G Development Kit, Stratix IV GT Edition Reference Manual September 2010 Altera Corporation
SFP+ Interface
The development board consists of two SFP+ interfaces. One SFP+ interface (SFPA)
connects to the Stratix IV GT transceivers through an electronic dispersion
compensation (EDC) chip. The EDC chip includes retimer devices which enable the
SFP+ interface to achieve 11.3-Gbps. The second SPF+ interface (SFPB) does not have
an EDC chip and connects directly to the Stratix IV GT transceivers. The SFP+
interfaces consist of one full-duplex 11.3-Gbps transceiver channel.
Table 2–30 lists the pin assignments for the SFP+ interface (SFPA) and their
corresponding schematic signal names and Stratix IV GT pin numbers.
J34.8
Module interrupt output:
0: Possible module operational fault
1: Normal mode
QSFP_INTERUPTN U44.M37 —
J34.7
Module present (output):
0: Module present (inserted)
1: Module absent
QSFP_MOD_PRSN U44.M38 —
Table 2–29. QSFP Interface Pin Assignments, Schematic Signal Names, and Functions
Board
Reference
Description
Schematic
Signal Name
Stratix IV GT
Device
Pin Name
Other
Connections
Table 2–30. SFP+ Interface (SFPA) Pin Assignments, Schematic Signal Names, and Functions
Board
Reference
Description
Schematic
Signal Name
Stratix IV GT
Device
Pin Name
Other
Connections
J32.8 Signal loss indicator from the SFP+ interface SFPA_LOS U44.AD30 —
J32.6
Module present indicator from the SFP+
interface
SFPA_MOD0_PRSNTN U44.AH39 —
J32.5 Two-wire serial interface clock line SFPA_MOD1_SCL U44.AG39 —
J32.4 Two-wire serial interface data line SFPA_MOD2_SDA U44.AF39 —
J32.7
Rate select 0. Controls the SFP+ interface
receiver. When input signaling is high, the
rate is > 4.25 GBps and when input signaling
is low, the rate
4.25 GBps.
SFPA_RATESEL0 U44.AE30 —
J32.9
Rate select 1. Controls the SFP+ interface
transmitter. When input signaling is high,
the rate is > 4.25 GBps and when input
signaling is low, the rate
4.25 GBps.
SFPA_RATESEL1 U44.AE31 —
J32.12 Received data (output from SFP+ interface) SFPA_RXN — EDC
J32.13 Received data (output from SFP+ interface) SFPA_RXP — EDC
J32.19 Transmitted data (input to SFP+ interface) SFPA_TXN — EDC
J32.18 Transmitted data (input to SFP+ interface) SFPA_TXP — EDC
J32.3
Turns off and disables the transmitter laser
output
SFPA_TXDISABLE U44.AG38 —
J32.2 Interface transmitter fault SFPA_TXFAULT U44.AD29 —