Zilog EZ80190 - Manual (Page 42)

eZ80190 Development Kit
User Manual
eZ80Acclaim! Development Platform UM014108-0810
38
Jumper J14
The J14 jumper connection controls the polarity of the Ring Indicator. See
Table 17.
For jumpers J15–J18, RS485 functionality is not available on the
eZ80190 Module. However, this functionality is available in other eZ80
®
devices.
Jumper J15
The J15 jumper connection controls the selection RS485 circuit along
with UART0. When the shunt is placed, the RS485 circuit is enabled. See
Table 18. RS485 functionality will be available in future eZ80
® devices.
Table 17. J14—RI
Shunt
Status
Function Affected Device
1–2 The Ring Indicator for UART1 is inverted. UART1.
2–3 The Ring Indicator for UART1 is not inverted. UART1.
Table 18. J15—RS485_1_EN*
Shunt
Status
Function Affected Device
In The RS485 circuit is enabled on UART0. 
The UART0 CONSOLE interface and IrDA are
disabled.
IrDA, UART0 CONSOLE
interface, RS485 interface.
Out The RS485 circuit is disabled on UART0. IrDA, UART0 CONSOLE
interface, RS485 interface.
Note: *To enable the RS485 circuit, the corresponding IrDA/RS232 circuit must be disabled.