Table 18. J14-Ri; Table 19. J15-Rs485_1_En - ZiLOG eZ80F92 User Manual

Shunt
Status
1–2
2–3
Shunt
Status
In
Out
Note: *To enable the RS485 circuit, the corresponding IrDA/RS232 circuit must be disabled.
UM013904-0203
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Jumper J14
The J14 jumper connection controls the polarity of the Ring Indicator.
See Table 18.
Function
The Ring Indicator for UART1 is inverted.
The Ring Indicator for UART1 is not inverted.
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 19. RS485 functionality will be available in future eZ80
Table 19. J15—RS485_1_EN*
Function
The RS485 circuit is enabled on UART0.
The UART0 CONSOLE interface and IrDA are
disabled.
The RS485 circuit is disabled on UART0.
Table 18. J14—RI
PRELIMINARY
eZ80F92 Development Kit
User Manual
Affected Device
UART1.
UART1.
®
Affected Device
IrDA, UART0 CONSOLE
interface, RS485 interface.
IrDA, UART0 CONSOLE
interface, RS485 interface.
Operational Description
37
devices.