AK4642VN Datasheet, PDF (44/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642]
„ BEEPೖྗ
PMBP bit = “1”ͷ࣌ɺBEEPS bitΛ“1”ʹ͢ΔͱBEEP pin͔Βೖྗ͞Εͨ৴߸ΛεϐʔΧΞϯϓ͔Βग़ྗ͠ɺ
BEEPH bitΛ “1”ʹ͢ΔͱϔουϑΥϯΞϯϓ͔Βग़ྗ͠ɺBEEPL bitΛ “1”ʹ͢ΔͱεςϨΦϥΠϯΞ΢τΞ
ϯϓ͔Βग़ྗ͢Δ͜ͱ͕Ͱ͖·͢ɻೖྗ͞ΕΔBEEPԻ͸R_iͰϨϕϧௐ੔Ͱ͖·͢ɻR_i = 20kΩ ࣌ͷήΠϯ(typ)
ΛTable 33, Table 34, Table 35ʹࣔ͠·͢ɻ͜ͷήΠϯ͸ɺR_i ͷ஋ʹ൓ൺྫ͠·͢ɻ

Ri
BEEP
BEEPL
BEEPH
BEEPS
LOUT/ROUT pin
HPL/HPR pin
SPP/SPN pin
Figure 7. Block Diagram of BEEP pin
LOVL bit
BEEP Æ LOUT/ROUT
0
0dB
Default
1
+2dB
Table 33. R_i = 20kΩ ࣌ɺBEEPೖྗ Æ LOUT/ROUTग़ྗήΠϯ(typ)
HPG bit
BEEP Æ HPL/HPR
0
−20dB
Default
1
−16.4dB
Table 34. R_i = 20kΩ ࣌ɺBEEPೖྗ Æ ϔουϑΥϯग़ྗήΠϯ(typ)
SPKG1-0 bits
BEEP Æ SPP/SPN
ALC bit = “0”
ALC bit = “1”
00
+4.43dB
+6.43dB
Default
01
+6.43dB
+8.43dB
10
+10.65dB
+12.65dB
11
+12.65dB
+14.65dB
Table 35. R_i = 20kΩ ࣌ɺBEEPೖྗ Æ εϐʔΧग़ྗήΠϯ(typ)
MS0358-J-02
- 44 -
2005/04