Motorola PL3307 Integration Manual page 36

2 - 10 PL3307 Decoder Integration Guide
PL3307 Signal Descriptions
Table 2-3
Signal Name
HOST_DOWNLOAD
HOST_3P3
GND
HOST_RXD
HOST_TXD
HOST_CTS
HOST_RTS
POWER_DOWN
BEEPER_OUT*
HOST_DEC_LED*
HOST_AIM_WAKE*
HOST_TRIGGER*
Note: Signal directions are listed relative to the PL3307 decoder module.
Description Dir
PL3307 download In
signal
+3.3 V power supply In
System ground
RS-232 receive In
RS-232 transmit Out
RS-232 Clear To In
Send control signal
RS-232 Request To Out
Send control signal
Status signal from the Out
PL3307 indicating
power down state
Pulse width Out
modulated output
used to control an
external beeper
Active low output Out
used to indicate a
valid bar code
decode
Signal functions as In
aiming pattern
control when the
PL3307 is not in a
low power state
Signal functions as a
wakeup only when
the PL3307 is in a
low power state
Used to start a In
decode session
Host
Connector Control State
Pin
1 L = PL3307 in
software download
mode
H = No action
2
3
4
5
6
7
8 L = Normal state
H = Engine is in a
power down state
9
10 L = Led On
H = Led off
11 L = Aiming pattern
on
H= Aiming pattern
off
L = Wake up
PL3307 from a
power down state
H = No action
12 L = Start session
H = Inactive
Comments
Signal is sampled
immediately following a reset
state. It indicates to the
PL3307 the system is ready
to accept a new software
image.
PL3307 supply voltage
PL3307 power supply return
See Typical Input Circuit
See Typical Input Circuit
The beeper output ranges
from 2.352 KHz to 2.963 KHz
and is a 50% duty cycle
square wave at maximum
volume, 12.5% at low
volume. Normally used as a
control signal for beeper drive
circuit. Control line can
source/sink 5 mA.
Normally used as a control
signal for an LED drive
circuit. Control line can
source/sink 5 mA.
See Typical Input Circuit.
Set the appropriate
parameters for this signal to
function properly.
See Typical Input Circuit.