Komodo Fiber Reference Guide
28
45
ddr3_1_dqs_n[5]
E19
Differential 1.35-V SSTL
Data strobe N byte 5
64
ddr3_1_dqs_p[6]
B23
Differential 1.35-V SSTL
Data strobe P byte 6
62
ddr3_1_dqs_n[6]
A23
Differential 1.35-V SSTL
Data strobe N byte 6
137
ddr3_1_dqs_p[7]
E25
Differential 1.35-V SSTL
Data strobe P byte 7
135
ddr3_1_dqs_n[7]
D25
Differential 1.35-V SSTL
Data strobe N byte 7
202
sodimm_scl
AC24
3.3-V LVTTL
Clock connection for
SODIMM
200
sodimm_sda
AD24
3.3-V LVTTL
Data connection for
SODIMM
Table 7: SODIMM pin assignments, signal name and functions
QSFP and SFP+ modules
The Komodo Fiber has 4 small form-factor pluggable (SFP) connector and cage assembly that
accept SFP+ modules and one QSFP connector and cage assembly that accept QSFP module. Each
SFP+ module can transmit\receive data at rates of up to 10Gb and the QSFP module can
transmit\receive data at rates of up to 40Gb.
Board
reference
(JP1)
Signal Name
Arria V
GZ Pin
Number
I/O Standard
Description
27
qsfp_modprsl
N24
3.3-V LVTTL
Module present active low
28
qsfp_intl
N23
3.3-V LVTTL
Interrupt from QSFP active low
11
qsfp_scl
AD6
2.5V
Serial I2C clock line
12
qsfp_sda
AF6
2.5V
Serial I2C data line
31
lpmode
-
-
Low power, pulled up to 3.3V
9
qsfp_resetl
AG6
2.5V
Reset active low
36
qsfp_txd[0]
AB4
1.5V PCML
Tx Data, each signal in differential
with positive and negative
connections
37
AB3
3
qsfp_txd[1]
AD4
1.5V PCML
2
AD3
33
qsfp_txd[2]
AF4
1.5V PCML
34
AF3
6
qsfp_txd[3]
AK4
1.5V PCML
5
AK3
17
qsfp_rxd[0]
AC2
1.5V PCML
Rx Data, each signal in differential
with positive and negative
connections
18
AC1
22
qsfp_rxd[1]
AE2
1.5V PCML
21
AE1
14
qsfp_rxd[2]
AG2
1.5V PCML
15
AG1
25
qsfp_rxd[3]
AL2
1.5V PCML
24
AL1
Table 8: QSFP pin assignments, signal name and functions
Board Components
