Rj45 To Db9 Harness Pinout - Nvidia Spectrum-2 SN3000 1U User Manual

Pin Symbol Name
3 TX_Disable
4 SDA
5 SCL
6 MOD_ABS
7 RS0
8 Rx_LOS
9 RS1
10 VeeR
11 VeeR
12 RD-
13 RD+
14 VeeR
15 VccR
16 VccT
17 VeeT
18 TD+
19 TD-
20 VeeT

1. TFAULT is an open collector/drain output, which should be pulled up with a 4.7k-10k
Ohms resistor on the host board if intended for use. Pull up voltage should be
between 2.0V to Vcc + 0.3V. A high output indicates a transmitter fault caused by
either the TX bias current or the TX output power exceeding the preset alarm
thresholds. A low output indicates normal operation. In the low state, the output is
pulled to <0.8V.
2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V
3. Should be pulled up with 4.7kΩ-10kΩ on host board to a voltage between 2.0V and
3.6V. MOD_ABS pulls line low to indicate module is plugged in.
4. LOS is open collector output. Should be pulled up with 4.7kΩ-10kΩ on host board to a
voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates
loss of signal.

RJ45 to DB9 Harness Pinout

The RS232 harness cable (DB9 to RJ45) is supplied with the switch to connect a host PC to the
Console RJ45 port of the system.
Transmitter Disable. Turns off transmitter laser output
2-wire Serial Interface Data Line
2-wire Serial Interface Clock Line
Module Absent. Grounded within the module
No connection required
Loss of Signal indication. Logic 0 indicates normal operation.
No connection required
Receiver Ground (Common with Transmitter Ground)
Receiver Ground (Common with Transmitter Ground)
Receiver Inverted DATA out. AC Coupled
Receiver Non-inverted DATA out. AC Coupled
Receiver Ground (Common with Transmitter Ground)
Receiver Power Supply
Transmitter Power Supply
Transmitter Ground (Common with Receiver Ground)
Transmitter Non-Inverted DATA in. AC Coupled
Transmitter Inverted DATA in. AC Coupled
Transmitter Ground (Common with Receiver Ground)
Description Note
b
c
d
d
--
d
--
a
a
--
--
a
--
--
a
--
--
a
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