Zilog Z8F0411 - Manual (Page 57)

MDS General-Purpose Board Development Kit
User Manual
UM016905-1207 Appendix—MDS-PM Board Pin Maps
46
GPS Module Signals
Enabled by jumper on J2 pins 7, 8, or by U2 pin D0. Uses COM1. Uses
COM2. When enabled, disables RS232-2 and Software UART.
•
GPS_TXD—PD5_TXD1
•
GPS_RXD—PD4_RXD1
•
GPS_PPS—PD6_CTS1 (Input)
•
Not used—PD3
RS485 Port Signals
Enabled by jumper on J2 pins 3, 4, or by U2 pin D2. Uses COM1. When
enabled, disables RS232-1, IrDA, and RF.
•
RS485_TXD—PA5_TXD0
•
RS485_RXD—PA4_RXD0
•
Not used—PA3_CTS0 (Input)
•
RS485_OE—PA2_DE0
Software UART Signals
Enabled by jumper on J2 pins 13, 14, or by U2 pin D6. When enabled,
disables RS232-2 and GPS.
PA6 and PA7 are I 2 C control pins.
•
SU_TXD—PA6_TXD1
•
SU_RXD—PA7_RXD1
•
CTS—PD6_CTS1 (Input)
•
RTS—PD3 (Software RTS1 Output)
Note: