I2C Peripherals
There are a couple of I2C peripherals that you can access via the PS_I2C1. The following components and addresses are listed below.
SIGNAL | FPGA PIN |
---|---|
SCL | A28 (PS_MIO16) |
SDA | C29 (PS_MIO17) |
Voltage, Current, and Temperature Monitors
Four Analog Devices LTC2991 provide voltage, current, and temperature monitoring for the ECM1900. Device sensor inputs are connected as shown in the table below. +xV_SRC
and +xV
connections measure the voltage across a 5mOhm resistor for current sensing. For more information see the Device Sensors page.
DEVICE I2C ADDRESS | U351001 000x | U371001 001x | U401001 010x | U461001 011x |
---|---|---|---|---|
V1 | +1.8V_SRC | +1.2V_DDR_SRC | +3.3V_SRC | +5V_SRC |
V2 | +1.8V | +1.2V_DDR | +3.3V | +5V |
V3 | +1.8V | +1.2V | VCCO_28_SRC | VCCO_87_88_SRC |
V4 | – | +1.2V_MGTAVTT | VCCO_28 | VCCO_87_88 |
V5 | +0.9V_VCCINT_VCU | +1.2V_MGTAVTT_SRC | VCCO_28 | VCCO_87_88 |
V6 | +0.9V_MGTAVCC | +1.2V_MGTAVTT | VCCO_67 | VCCO_68 |
V7 | +0.9V_MGTAVCC_SRC | FPGA_DXP | VCCO_67_SRC | VCCO_68_SRC |
V8 | +0.9V_MGTAVCC | FPGA_DXN | VCCO_67 | VCCO_68 |
Clock Generator (Si5341)
A Silicon Labs Si5341B programmable clock generator provides nine independent LVDS clock pairs to the FPGA. For more information, visit the Clock Generator page.
USB Type-C Channel Configuration
A TUSB320 (U4) handles communication and configuration of the USB-C CC lines. I2C access is provided for this device, but the default operation of the device is sufficient for most use cases.
DEVICE | DESIGNATOR | I2C ADDRESS | FUNCTION |
---|---|---|---|
Texas Instruments TUSB320 | U4 | 1000 111x | USB Type-C Channel Configuration |
FPGA Core Supply Regulator
DEVICE | DESIGNATOR | I2C ADDRESS | FUNCTION |
---|---|---|---|
Intel EM2140 | U24 | 1100 110x | FPGA core supply regulator |