XIA PZ-TIO, User Manual

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PZ-TIO Manual Version 1.01
© 2022 XIA LLC 34

P100_B SFP cage, connected to FPGA fabric and GTX pins. Used for White
Rabbit Ethernet I/O. Use of White Rabbit approved fiber is
recommended for best time synchronization, but not essential

P100_C SFP cage, connected to FPGA fabric and GTX pins. Currently unused

J1 RJ-45 Ethernet connector with LEDs. Used for default 10/100/1000M
Ethernet connection to ARM/Linux

J618 RJ-45 Ethernet connector Used for alternate 10/100M Ethernet
connection to ARM/Linux with PTP hardware timestamping

J141 USB/UART connection to ARM/Linux. LED indicates connection status

J142 SD card slot. Tested with up to 16 GB.
Used to boot PicoZed and acts as Linux’ “hard drive”

J143 USB type A for peripherals. Currently unused.
10.2.2 MMCX Connectors for Clocks and Triggers

J804 Clock input. 3.3V TTL

J802 Clock output. 3.3V TTL. Output signal can be chosen by jumper and
configured in FPGA, for example a White Rabbit related clock

J803 Trigger output. 3.3V TTL. Output signal can be chosen by jumper and
configured in FPGA, e.g. as White Rabbit PPS signal

J400 Sync input. 3.3V TTL, 5V compatible

J401 Veto input. 3.3V TTL, 5V compatible

J800 General purpose output GP1. 3.3V TTL

J801 General purpose output GP2. 3.3V TTL
10.2.3 PMOD and HDMI Connectors for GPIO
Figure 10-2: Pinout of PMOD connectors; here: J101. Signal lines are routed as differential lines,
but by default are used as single ended 3.3V TTL signals.
The PZ-TIO implements 3 PMOD-style I/O connectors. All signal I/O pins connect to the
PicoZed FPGA pins, without buffers or overvoltage protection. Signal lines are routed as
differential lines, but by default are used as single ended 3.3V TTL signals. JA140 is a 12-
pin receptacle placed on the board edge. (Only 4 I/O pins are currently functional). J101
and J102 are not stuffed by default; they can be stuffed with right angle headers to bring
signals to the board edge (some further shrouding and/or a front panel would be desirable),
can be stuffed with vertical receptacles, or can be used as test points for probing.