Digi NS9210 User Manual
Page 45
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45
Serial status
LEDs
The development board has two sets of serial port LEDs — four for serial port D and
eight for serial port B. The LEDs are connected to the TTL side of the RS232 or
RS422/485 transceivers.
Green means corresponding signal high.
Red
means corresponding signal
low.
The intensity and color of the LED will change when the voltage is switching.
Status LEDs
Serial Port D
LEDs
Status LEDs
Serial Port B
LEDs
Signal name
LED
GPIO used
USER_LED1#
LE5
GPIO82
USER_LED2#
LE6
GPIO85
LED reference
Function
RED
GREEN
LE60
LE45
CTSD#/GPIO60
LE61
LE46
RTSD#/GPIO64
LE62
LE47
RXDD/GPIO62
LE63
LE48
TXDD/GPIO66
LED reference
Function
RED
GREEN
LE64
LE49
DCDB#/GPIO51
LE65
LE50
RIB#/GPIO55
LE66
LE51
DSRB#/GPIO53
LE67
LE52
DTRB#/GPIO57
LE68
LE53
CTSB#/GPIO52
LE69
LE54
RTSB#/GPIO56
LE70
LE55
RXDB/GPIO54
LE71
LE56
TXDB/GPIO58