SM-C93
SM-C93 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R - Reviewed by M.B. - Copyright © 2021 SECO S.p.A.
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3.2.1.10
Asynchronous Serial Ports (UART) interface signals
The Intel
®
family of SOCs formerly coded as Elkhart Lake offers in its Low Power Sub System (LPSS) two high speed UART, with a maximum speed of 115,200 kb/s
or 3.6864Mb/s depending on Industry standards.
In addition, two additional UART are offered and managed by the Embedded controller MEC1705 from Microchip
SER0_TX: UART #0 Interface, Serial data Transmit (output) line, 1.8V_RUN electrical level. It is managed by Microchip MEC1705 controller.
SER0_RX: UART #0 Interface, Serial data Receive (input) line, 1.8V_RUN electrical level. It is managed by Microchip MEC1705 controller.
SER0_RTS#: UART #0 Interface, Handshake signal, Request to Send (output) line, 1.8V_ RUN electrical level
SER0_CTS#: UART #0 Interface, Handshake signal, Clear to Send (Input) line, 1.8V_ RUN electrical level
SER1_TX: HS-UART #0 Interface, Serial data Transmit (output) line, 1.8V_ RUN electrical level. It is directly managed by Intel processor.
SER1_RX: HS-UART #0 Interface, Serial data Receive (input) line, 1.8V_ RUN electrical level. It is directly managed by Intel processor.
SER2_TX: UART #1 Interface, Serial data Transmit (output) line, 1.8V_ RUN electrical level. It is managed by Microchip MEC1705 controller.
SER2_RX: UART #1 Interface, Serial data Receive (input) line, 1.8V_ RUN electrical level. It is managed by Microchip MEC1705 controller.
SER2_RTS#: UART #1 Interface, Handshake signal, Request to Send (output) line, 1.8V_ RUN electrical level.
SER2_CTS#: UART #1 Interface, Handshake signal, Clear to Send (Input) line, 1.8V_ RUN electrical level.
SER3_RX: HS-UART #1 Interface, Serial data Receive (input) line, +1.8V_RUN electrical level. It is directly managed by Intel processor.
SER3_TX: HS-UART #1 Interface, Serial data Transmit (output) line, +1.8V_RUN electrical level. It is directly managed by Intel processor.
Please consider that interface is at +1.8V_ RUN electrical level; therefore, please evaluate well the typical scenario of application. If there isn t any explicit need of
interfacing directly at +1.8V_ RUN level, for connection to standard serial ports commonly available (like those offered by common PCs, for example) it is mandatory
to include an RS-232 transceiver on the carrier board.
