Symbol SE 2223, Integration Manual

Page: 44 / 260

2-15
Installation
Table 2-8 lists the signals available on the board.
Table 2-8. Board Signals
Signal Pin
No.
Type
(I/O)
Function
TRIG* 1 I Trigger: This pin is the hardware triggering line. Driving this pin
low causes the SE 2223/3223 to start a scan and decode
session.
AIM/WAKE* 2 I Wake Up: When the SE 2223/3223 is in the low power mode,
pulsing this pin low for a minimum of 2 µs wakes the SE
2223/3223.
DLED* 3 O Decode LED: Low current decode LED output.
BPR* 4 O Beeper*: Low current beeper output.
RTS 5 O Request to Send: Serial port handshaking line.
CTS 6 I Clear to Send: Serial port handshaking line.
TXD 7 O Transmitted Data : Serial output port.
RXD 8 I Received Data: Serial input port.
GND 9 Ground: 0 V reference.
Vcc 10 Power Supply : Power supply voltage for the SE 2223/3223.
Download 11 I Holding this line low enables downloading of software to the SE
2223/3223.
PWRDWN 12 O Power Down Ready : When high, the decoder is in low power
mode.
Signal names with the “*” modifier are asserted when at the ground level (active low). Signal names
without the “*” modifier are asserted when at the positive supply voltage level (active high).