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Host Interface Connector
Host Interface Connector Pin Out
The interface connector is a CviLux Corporation 0.5mm vertical surface mount FFC/FPC connector.
PIN
TTL level 232
1
232INV
2
VIN
3
GND
4
RXD
5
TXD
6
CTS
7
RTS
8
PWRDWN
9
nBEEPER
10
nGoodRead
11
nWake
12
nTrig
I=Input,O=Output,od=Open Drain
Host Interface Signal Descriptions
Warning: Do not connect a flex strip to the host interface connector when power is present on the flex strip. Damage to the
image could result.
TTL Level 232
Signal
232INV
Reserved
VIN
Power-Supply voltage input
GND
Power-Supply and signal ground
RXD
Input-TTL level 232 receive data
TXD
Output-TTL level 232 transmit data
CTS
Input-TTL level 232 clear to send signal
RTS
Output-TTL level 232 request to send
PWRDWN
Output-Open Drain; 10K Pull up; active high indicator that EM2037 is in power down mode.
Output – Open Drain; idle high signal that can be an active low DC or PWM controlled AC signal used to drive
nBEEPER
anexternal beeper.
nGoodRead
Output – Open Drain; active low signal for driving a low current Good Read LED circuit.
nWake
Input, 100K Pull up – When in power down mode active low wake up signal to the EM2037.
Input, Weak Pull up – signal can be used a trigger input to the EM2037 to indicate trigger
nTrig
depressed and when programmed for host notify mode.
I/O
I
-
-
GND
I
O
Reserved
I
O
Reserved
O,od
PWRDWN
O,od
nBEEPER
O,od
nGoodRead
I
nWake
I
nTrig
Description
USB
NC
VIN
D-
D+
I/O
-
-
-
I/O
-
I/O
-
O,od
O,od
O,od
I
I
3
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