AS3661 datasheet(54/87 Pages) AMSCO

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AS3661

Datasheet

STARTUP_BUSY

A status bit which indicates that the device is running the

internal start-up sequence. Please note that STARTUP_BUSY

bit is always “1” when CHIP_EN bit is “0”. Please refer to

section 8.5 for detailed startup mode description.

0: internal start-up sequence completed.

1: internal start-up sequence running.

ENGINE_BUSY

A status bit which indicates that a program execution engine is

clearing internal registers. Serial bus master should not write

or read program memory, or registers 0x00, 0x37 to 0x39 or

0x4C to 0x4E, when this bit is set to "1".

0: engine ready.

1: at least one of the engines is clearing internal registers.

EXT_CLK_USED

This bit is high when external clock signal on CLK pin is

detected. CLK_DET_EN bit high in address 36 enables the

clock detection.

0: external clock not detected.

1: external clock detected.

ENG1_INT

This is the interrupt status bit for program execution engine 1.

The bit is set by END or INT instruction. Reading the interrupt

bit clears the interrupt.

0: interrupt unset/cleared.

1: interrupt set.

ENG2_INT

This is the interrupt status bit for program execution engine 2.

The bit is set by END or INT instruction. Reading the interrupt

bit clears the interrupt.

0: interrupt unset/cleared.

1: interrupt set.

ENG3_INT

This is the interrupt status bit for program execution engine 3.

The bit is set by END or INT instruction. Reading the interrupt

bit clears the interrupt.

0: interrupt unset/cleared.

1: interrupt set.

Table 45. STATUS / INTERRUPT Register

STATUS / INTERRUPT

Bit

Bit Name

Default

Access

Bit Description

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