User`s manual

M9328MX1ADS - Rev 2 User’s Manual
10 Configuration and Operation MOTOROLA
Configuration and Operation
2.2.1 Peripheral Selection Switch (S1)
Switch S1 enables or disables the UART transceivers, the IRDA buffers, and
the buzzer.
Table 2-2 lists the functionality of these subswitches.
.
Mode Switch, S22
S22
Configures 32-bit SyncFlash as the boot device, configures
Little Endian mode, and Normal mode operation.
Factory setting is shown
Subsection 2.2.2 explains other settings for this switch.
Table 2-1 Component Configuration Settings (Continued)
Component Position Effect
5
ON
4
S22
1
2
3
6
Table 2-2 S1 Subswitch Settings
Subswitch, Function
Settin
gEffect
S1-1, UART1 transceiver ON Forces the UART1 transceiver to be enabled.
OFF UART1_EN bit of U42 controls the UART1
transceiver. Active low.*
S1-2, UART2 transceiver ON Forces the UART2 transceiver to be enabled.**.
OFF UART2_EN bit of U42 controls the UART2
transceiver. Active low.*
S1-3, IrDA module ON Forces the IrDA module buffers to be
enabled.**
OFF IrDA_EN bit of U42 controls the IrDA buffers.
Active low.*
S1-4, LCD — No effect
S1-5, Buzzer ON Enables the buzzer to be controlled by the
PWMO output.
OFF PMWO is disconnected from the buzzer circuit.
S1-6, PEN_CS — No effect
S1-7, PEN_IRQ — No effect
S1-8 — No effect