Release v3.3 (SCB)
Schematics:**
Connector_GTX.SchDoc:
- P/N of the J1 changed to QTS-048-02-L-LD-DP (8 mm height stack-up)
- Pin-90 signal connected to FAN_BOX_EN
- Pin-92 signal connected to FAN_PSU_EN
I2C_Multiplexers.SchDoc:
- Removed I2C Temperature Sensor TMP100 IC7 for sensing PCB Tª (placed close the PSU)
TEST_USB.SchDoc:
- Removed the two 1:2 multiplexer controlled by the FPGA.
- Used two independent USB CP2101 chips and connectors for ARM and FPGA.
- Resistors for pull-up and pull-down changed from 3K3 to 4K7.
- Connectors_GPIOs.SchDoc:
- Cases of the DB9 and USB connectors tied to chassis.
- P/N of the J2 changed to QTS-048-02-L-LD-DP (8 mm height stack-up)
- Removed FAN_FPGA controller
- FAN_BOX_EN and FAN_PSU_EN controlled by the FPGA in order to allow easy PWM implementation.
- Added capacitors for filtering PWM output signals.
- Removed tachometers fan signals.
- Added general function push-button.
- Added PMOS to allow switch on-off the +12V of the fans.
- Fan's connectors changed by P/N 61900211121of Würth (2 pins THT)
Main.SchDoc:
- Removed Chassis connections
- Added the I2C_Peripherals sheet:
- Added I2C GPIO controller
- Added push-button to select the ARM booting
- Added a bi-colour red/green led for ARM error communication
- Added a bi-colour red/green led for PSU OK/error
- Added 4bit dip-switch to indicate the PCB version
- Added the TMP100 I2C IC7 Tª sensor removed from I2C_Multiplexers.
PCB:**
- PCB shape changed
- RS232 and USB Test connectors moved to the back panel of the switch.
- SFP cases moved about 2,4mm inside PCB
- USB connectors moved to the PCB edge
- Stack-up changed to 6 layers.
- Gigabit signals moved to internal routing layers to reduce the emitted radiations (CE Label test requirement)