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參數(shù)資料
| 型號： | LC07410LG |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA40 |
| 封裝： | 4.40 X 3.60 MM, FLGA-40 |
| 文件頁數(shù)： | 17/36頁 |
| 文件大?。?/td> | 367K |
| 代理商： | LC07410LG |
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LC07410LG
No.A1345-24/36
BEEP output
A signal input from the BEEP pin or a BEEP sound (pulse wave) generated within the IC can be output from the
speaker.
(a) EXT-BEEP operation
When BPMODE is 01, the signal input to the BEEP pin is output from the speaker.
(b) INT-BEEP operation
When BPMODE is 10/11, a BEEP signal generated within the IC is output from the speaker.
INTBPST
BEEP Output
Nrep
fsig
Ton
Toff
Use the BPHZ register to set the pulse frequency, fsig ,the BPTON and BPTOFF registers to set the on/off duty, and the
BPCNT register to set the repeat count, Nrep. Then set INTBPST = 0→1 to output the BEEP sound. Output stops
automatically when the specified number of beeps output.
When BPMODE is 10 (serial control mode), INTBPST control is carried out according to registers.
When BPMODE is 11 (parallel control mode), INTBPST control is carried out using the BEEP pin.
Note: When the transition INTBPST = 0→1 is detected, the BEEP sound starts. When BPMODE is 10 (serial control
mode), the BEEP sound is not output even if INTBPST = 1 is sent when INTBPST is set to 1.
If toff is 0, the continuous BEEP sound is output during the period given by ton*Nrep.
If Nrep is set to infinite, the ton/toff cycle repeats infinitely and stops when INTBPST is set to 0.
Output stops when INTBPST is set to 0, even in the middle of BEEP output.
The gain from the start of BEEP input until BTL output can be varied within the range -15dB to -21dB, based on the
SP_BPVOL[1:0] setting.
It is also possible to adjust the sound volume using an external resistor and by setting of 0dB.
[Againof approximately -21dB (typ) results with an external 100k
Ω connection.]
ADRS
Bit
Name
Init
Description
[7:6]
BPMODE
00b
BEEP output mode setting
11: INT-BEEP operation/parallel control mode
10: INT-BEEP operation/serial control mode
01: EXT-BEEP operation
00: OFF
13h
[5:4]
BPVOL
11b
BEEP gain selection
11: -21dB 10: -18dB 01: -15dB 00: 0dB
[7:5]
BPTON
010b
INT-BEEP on duty (ton) setting
2Fh
[4:0]
BPTOFF
00110b
INT-BEEP off duty (toff) setting
[7]
INTBPST
0b
INT-BEEP starting control (At BPMODE = 10, Valid)
[6:4]
BPHZ
011b
INT-BEEP frequency (fsig) setting
30h
[3:0]
BPCNT
0110b
INT-BEEP number of cycles (Nrep) setting
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