CP2110-F02-GM1 Silicon Laboratories Inc, CP2110-F02-GM1 Datasheet - Page 20

• Manufacturer Part Number: CP2110-F02-GM1
• Description: Peripheral Drivers & Components (PCIs) HID USB-UART bridge
• Manufacturer: Silicon Laboratories Inc

Specifications of CP2110-F02-GM1

• Package / Case: QFN-28
• Input Voltage Range (max): 5.25 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3 V to 3.6 V
• Supply Current (max): 12.5 mA
• Lead Free Status / Rohs Status: Details

CP2110
8.3. GPIO.3—RS-485 Transceiver Bus Control
GPIO.3 is configurable as an RS-485 bus transceiver control pin that is connected to the DE and RE inputs of the
transceiver. When configured for RS-485 mode, the pin is asserted during UART data transmission as well as line
break transmission. The RS-485 mode of GPIO.3 is active-high by default, but is also configurable for active-low
mode.
8.4. GPIO.4-5—Transmit and Receive Toggle
GPIO.4 and GPIO.5 are configurable as Transmit Toggle and Receive Toggle pins. These pins are logic high when
a device is not transmitting or receiving data, and they toggle at a fixed rate as specified in Table 6 when data
transfer is in progress. Typically, these pins are connected to two LEDs to indicate data transfer.
More information regarding the configuration and usage of these pins can be found in Section 9 as well as “AN144:
CP21xx Customization Guide” available on the Silicon Labs web site.
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Figure 10. Transmit and Receive Toggle Typical Connection Diagram
GPIO.3 – RS485
CP2110
Figure 9. RS-485 Transceiver Typical Connection Diagram
GPIO.5 – RX Toggle
GPIO.4 – TX Toggle
CP2110
RX
TX
Rev. 1.1
R
D
RE
DE
VIO
Transceiver
RS485