Command Summary
9
4
Hardware
4.1
Standard Model
Extended Communication/Power Header
Figure 7: Extended Communication/Power Header
Table 4: Extended Communication/Power Pinout
Pin Function
1
Vcc
2
Rx (SCL)
3
Tx (SDA)
4
Gnd
5
CTS
6
RTS
The Extended Communication/Power Header provides a standard connector for interfacing to the
GLK24064-25/GLT24064. Voltage is applied through pins one and four of the four pin
Communication/Power Header. Please ensure the correct voltage input for your display by referencing
Voltage Specifications before connecting power. Pins two and three are reserved for serial transmission,
using either the RS-232/TTL or clocking data through the I²C protocol, depending on what has been
selected by the Protocol Select Jumpers. Pins five and six can be used for serial transmission hardware
flow control, and are ignored for I²C communications. The Molex 22-04-1061 style header used can be
mated to a number of connectors, a 22-01-1062 for example.
Serial DB9 Connector
Figure 8: Serial DB9 Connector
Table 5: Serial DB9 Pinout
Pin
Function
2
Tx
3
Rx
5
Gnd
7
CTS
8
RTS
9
NC/Vcc*
The GLK24064-25/GLT24064 provides a DB-9 Connector to readily interface with serial devices using
EIA232 standard signal levels. It is also possible to communicate at TTL levels of 0 to +5V by setting the
Protocol Select Jumpers to TTL. As an added feature it is also possible to apply power through pin 9 of
the DB-9 Connector in order to reduce cable clutter. A standard male DB9 header will provide the
perfect mate for this connector.
*Note:
Do not apply voltage through pin 9 of the DB-9 Connector AND through the Communication/Power Header
at the same time.
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