4

Other Signals (VIO1 Voltage)

/RESET

D5

I

I

This RESET signal resets ASDL-70.

/SD

E7

I

I (internal PullDown)

. Low: Shutdown

IC is suspending the clock supply to the core.

The output signal retains the condition.

. High: IC is keeping the clock supply to the core.

However, when the externally connected quartz crystal is used with

CLKSEL=Low, the oscillation of the quartz crystal is kept performed

under the condition of CLKSEL=Low, and SD: Low.

When you want to stop the quartz crystal oscillation, you must set

CLKSEL=High.

. After wake up from SD, the IC must be reset.

CLKSEL

C

I

I

This is used for selecting whether the input signal from CLKIN should be used for the

clock input or whether the quartz crystal should be used at XTALIN and XTALOUT.

Using quartz crystal,

CLKSEL = Low, external quartz crystal is kept under oscillation

CLKSEL = High, external quartz crystal is suspending oscillation

Using CLKIN signal, set CLKSEL = High

Infrared Interface Signal (VIO2 voltage)

IrTXD0

B6

O

O4

This outputs the IrDA infrared signal and remote control send signal.

IrTXD

C7

O

O4

This outputs the IrDA infrared signal and remote control send signal.

IrRXD0

A6

I

I

This inputs a signal from the infrared module.

IrOUT0

B7

O

O4

This is an output signal for controlling the infrared module.

IrOUT

A7

O

O4

This is an output signal for controlling the infrared module.

Clock Signal (VIO3 voltage)

CLKIN

B

I

I

Clock input

Clock Signal (VDDC Voltage)

/XTALIN

A

I

You must connect quartz crystal to create a basic clock or input the clock from outside.

Usually you must connect the quartz crystal between XTALIN and

XTALOUT. The oscillation frequency of the crystal must be 48MHz.

/XTALOUT

A

O

TEST Signal

TEST

B5

I

I (Internal PullDown)

Test signal (Set to N.C).

TEST

A5

I

I (Internal PullDown)

Test signal (Set to N.C).

TEST

A4

I

I (Internal PullDown)

Test signal (Set to N.C).

TESTSE

B4

I

I (Internal PullDown)

Test signal (Set to N.C).