TOWER SYSTEM
Quick Start Guide
TWR-TWRPI-BD Jumper Options
The following is a list of all jumper options. The default installed jumper settings are
shown in white text within the black boxes.
TWRPI Socket A Configuration
Jumper
Option
Setting
Description
J2
GPIO4/UART
CTS Isolation
1-2
Connects J9_Pin19 to primary elevator
signal GPIO9/UART1_CTS (A9)
J4
GPIO5/UART
RTS Isolation
1-2
Connects J9_Pin20 to primary elevator
signal GPIO1/UART1_RTS (B21)
J6
TWRPI-ID1
Isolation
1-2
Connects J10_Pin18 to primary elevator
signal AN1 (A29)
J12
TWRPI-ID0
Isolation
1-2
Connects J10_Pin17 to primary elevator
signal AN0 (A30)
J14
UART RX/
GPIO2 Isolation
1-2
Connects J9_Pin17 to primary elevator
signal UART1_RX (A43)
J16
UART TX/
GPIO3 Isolation
1-2
Connects J9_Pin18 to primary elevator
signal UART1_TX (A44)
TWRPI Socket A Configuration
(continued)
Jumper
Option
Setting
Description
J19
SPI CS
Selection
1-2
Connects J9_Pin11 to primary elevator
signal SPI0_CS0 (B46)
2-3
Connects J9_Pin11 to primary elevator
signal SPI0_CS1 (B47)
J21
GPIO0/IRQ
Selection
1-2
Connects J9_Pin15 to primary elevator
signal GPIO2 (B22)
3-4
Connects J9_Pin15 to primary elevator
signal IRQ_A (B62)
J23
GPIO1/IRQ
Selection
1-2
Connects J9_Pin16 to primary elevator
signal GPIO3 (B23)
3-4
Connects J9_Pin16 to primary elevator
signal IRQ_E (B58)
7
6