Datasheet

ADSP-BF609 EZ-KIT Lite Evaluation System Manual 2-13

ADSP-BF609 EZ-KIT Lite Hardware Reference

Table 2-7 and Table 2-8 show the output signals of the Microchip GPIO

expander (

U46), with a TWI address of 0100 010X, where X represents the

read or write bit. The signals that control an individual FET have an entry

under the FET column. The Component Connected column shows the

board IC that is connected if the FET is enabled. Note that some of the

Microchip (U46) output signals are connected directly to components on

the board. However, in most cases, the Microchip (U46) is controlling the

enable signal of a FET switch. Also note that if a particular functionality

of the processor signal is being used, it will be in bold font under the “Pro-

cessor Signal” column.

5 ~UART0CTS_146_EN Allows pins 1, 4 and 6 of

UART connector (J2) to be

connected together and used

as input to reset IC (U48).

This is disabled by default.

U16 High

6 ~TEMP_IRQ_EN PG09 can be used as TEMP

interrupt, disconnected by

default

U9 PG09/SPT2_

AD0/TM0_TMR4

U54 High

~TEMP_THERM_EN PB15 can be used as TEMP

thermal limit, disconnected

by default

U10 PB15/ETH0_

PTPPPS/PPI1_FS3

U54 High

Table 2-7. Output Signals of Microchip GPIO Expander

(U46 Port A)

Bit Signal Name Description FET Processor Signal

(if applicable)

Component

Connected

Default

OVERRIDE_SMC0_LP0_BOOT Overrides U41 select U29 Low

SMC0_EPPI2_LP1_SWITCH Controls U40 select line U28 High

Table 2-6. Output Signals of Microchip GPIO Expander

(U45 Port B) (Cont’d)

Bit Signal Name Description FET Processor Signal

(if applicable)

Component

Connected

Default