Connectors; Table 22. J18-Rt_2 - ZiLOG eZ80F92 User Manual

Shunt
Status
In
Out
Note: *Before enabling the termination resistor, ensure that the device is located at the end of the
interface line.
UM013904-0203
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Jumper J18
The J18 jumper connection controls the selection of the RS485 termina-
tion resistor circuit. When the shunt is placed, the RS485 termination
resistor circuit is enabled. See Table 22.
Function
The Termination Resistor for RS485_2 is IN.
The Termination Resistor for RS485_2 is OUT.

Connectors

A number of connectors are available for connecting external devices
such as the ZPAKII emulator, PC serial ports, external modems, the con-
sole, and LAN/telephone lines.
J6 and J8 are the headers, or connectors, that provide pin-outs to connect
any external application module, such as ZiLOG's Thermostat Applica-
tion Module.
Connector J6
The J6 connector provides pin-outs to make use of GPIO functionality.
Connector J8
The J8 connector provides pin-outs to access memory and other control
signals.
Table 22. J18—RT_2*
PRELIMINARY
eZ80F92 Development Kit
User Manual
Affected Device
RS485 interface.
RS485 interface.
Operational Description
39