129

Audio ICs

BU2615S / BU2615FS

FExplanation of the data

(1)

(2)

CT: Frequency measurement beginning data

1: Beginning of measurement

0: Internal counter is reset, IFIN is pulldown.

(3)

Output port control data: P0, P1, P2, P3, P4, P5, P6

1: Open drain output ON (P5 is LO)

0: Open drain output OFF (P5 is HI)

(4)

R0, R1, R2, standard frequency data

(5)

S: switch between FMIN and AMIN

0: FMIN 1: AMIN

(6)

PS: If this bit is set to ON while AMIN is selected,

swallow counter division is possible.

(7)

CH: If this bit set to ON, output port P5 goes to

phase comparison output. 0: P5

1: PD2

(8)

GT: Frequency measurement time and unlock

detection ON / OFF

(9)

TS: Test data. Input(0).