Intel E3815 FH8065301567411 Data Sheet

Product codes
FH8065301567411
Page of 5308
 
PCU – Universal Asynchronous Receiver/Transmitter (UART)
Intel
®
 Atom™ Processor E3800 Product Family
Datasheet
4415
32
PCU – Universal Asynchronous 
Receiver/Transmitter (UART)
This section describes the Universal Asynchronous Receiver/Transmitter (UART) serial 
port integrated into the PCU. The UART may be controlled through programmed IO.
Note:
Only a minimal ball-count, comprising receive & transmit signals, UART port is 
implemented. Further, a maximum baud rate of only 115,200 bps is supported. For this 
reason, it is recommended that the UART port be used for debug purposes only.
32.1
Signal Descriptions
Please see 
 for additional details.
The signal description table has the following headings:
Signal Name: The name of the signal/pin
Direction: The buffer direction can be either input, output, or I/O (bidirectional)
Platform Power: The reference power plane.
Description: A brief explanation of the signal’s function
I
O
I
O
I
O
I
O
I
O
I
O
I
O
O
Platform Control Unit
UART
SMB
iLB
SPI
PMC
Table 304. UART Signals 
Signal Name
Direction
Plat. Power
Description
PCU_UART_RXD
I
V1P8S
COM1 Receive: Serial data input from device pin to the 
receive port.
This signal is muxed and may be used by other functions.
PCU_UART_TXD
O
V1P8S
COM1 Transmit: Serial data output from transmit port to 
the device pin.
This signal is muxed and may be used by other functions.