T1023
USB1
USB2
DM1
DP1
Type A
J2
Figure 2-13. USB interface
2.20 RS-232
The T1023 device has two UART controllers and only UART1 is used on the board.The
RS-232 interface provides an RS-232 standard interconnection between the card and an
external host. The serial connection is configured to run at 115.2 KB/s.
UART supports:
• Full-duplex operation
• Software-programmable baud generators
• Divide the platform clock/2 by 1 to (2^16 -1)
• Generate a 16x clock for the transmitter and receiver engines
• Clear-to-send (CTS) and Ready-to-send (RTS) modem control functions
• Software-selectable serial interface data format that includes:
• Data length
• Parity
• 1/1.5/2 STOP bit
• Baud rate
• Overrun, parity, and framing error detection
The UART1 are routed to a RJ-45 connectors P1, as shown in the below figure.
Chapter 2 Architecture
QorIQ T1023 Reference Design Board User Guide, Rev. 0, 08/2015
Freescale Semiconductor, Inc.
25
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