Signal Descriptions; Figure 18. Uart 2-Via Point-To-Point Topology; Table 8. Uart Signals - Intel Quark D2000 Design Manual

UART
6.1

Signal Descriptions

Table 8. UART Signals
Signal Name
UART_x_TXD
UART_x_RXD
UART_x_RTS
UART_x_CTS
UART_x_DE
UART_x_RE

Figure 18. UART 2-Via Point-to-Point Topology

November 2016
Document Number: 333580-002EN
Direction/
Type
Logic output UART A single-ended Transmit data (RS232 or
RS485). In RS485 mode, the differential driver is
outside the SoC.
Logic input UART A single-ended Receive data (RS232 or
RS485). In RS485 mode, the differential receiver is
outside the SoC.
Logic output UART A Request to send (RS232)
Logic input UART A Clear to send (RS232)
Logic output UART A Driver Enable (RS485 mode). Used to
control the differential driver of RS485 in the
platform/board. Polarity is configurable. This is
multiplexed onto the UART_A_RTS pin depending
on RS485 or RS232 mode of operation.
Logic output UART B Receiver Enable (RS485 mode). Used to
control the differential receiver of RS485 in the
platform/board. Polarity is configurable. This is
multiplexed onto the UART_B_CTS pin depending
on RS485 or RS232 mode of operation.
Description
Intel® Quark™ Microcontroller D2000
Platform Design Guide
27