4114877
Rev 5.0
October 12, 2015
30
Development Kit User Guide
Interfaces
Pin #
Signal Name
I/O
I/O Type
Description
5
GND
Ground
6
CT107 DSR
O
RS232 (V24/V28)
Data set ready
7
CT105 RTS
I
RS232 (V24/V28)
Request to send
8
CT106 CTS
O
RS232 (V24/V28)
Clear to send
9
CT125 RI
O
RS232 (V24/V28)
Ring indicator
3.8.
UART0/SPI1
Note:
This interface is not supported on the HL6528RDx and HL75xx.
The UART0/SPI1 connector,
CN602, is a SUB-D 9-pin female connector and is used for connecting
the HL Series embedded module’s debug port interface.
This interface is used for legacy
HL6528x “SpyTracer” debugging. For more information about
SpyTracer debugging, refer to section 5.1 Getting SpyTracer Debugging Data.
When using the HL85xxx, the operating mode of this connector can be set using SW603. When using
a legacy HL6528x module, the UART0 connector functions as an SPI to UART interface regardless of
SW603’s setting.
Figure 19. UART0 Connector
Refer to the following table for the UART1 connector pin description.
Table 10.
UART0 Connector Pin Description
Pin #
Signal Name
I/O
I/O Type
Description
1
Not used*
-
-
-
2
CT104 RXD
O
RS232 (V24/V28)
Receive serial data
3
CT103 TXD
I
RS232 (V24/V28)
Transmit serial data
4
Not used*
-
-
-
5
GND
Ground
6
Not used*
-
-
-
7
CT105 RTS
I
RS232 (V24/V28)
Request to send
8
CT106 CTS
O
RS232 (V24/V28)
Clear to send
9
Not used*
-
-
-
*
Only 4 signals are used.
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