AK4645EN Datasheet, PDF (60/96 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

ASAHI KASEI
[AK4645]
„ ࠩಈϞϊϥϧϥΠϯग़ྗ (LOP/LON pins)
LODIF bit = “1” ͷ ͱ ͖ ɺ LOUT/ROUT pins ͸ ͦ Ε ͧ Ε LOP/LON pins ʹ ͳ Γ · ͢ ɻ DAC · ͨ ͸
LIN2/RIN2/LIN3/RIN3/LIN4/RIN4͔Βͷ৴߸ΛϞϊϥϧ৴߸[(L+R)/2]ʹม͠׵ɺLOP/LON pins͔Βࠩಈग़ྗ
͠·͢ɻ·ͨɺෛՙ఍߅͸֤ϐϯʹରͯ͠min. 10kΩͰ͢ɻPMLO bit = “0” ʹ͢Δͱύϫʔμ΢ϯঢ়ଶʹͳΓɺ
LOP/LON pins͸Hi-ZʹͳΓ·͢ɻPMLO bit = “1”, LOPS bit = “1”ͱ͢ΔͱɺύϫʔηʔϒϞʔυʹͳΓ·͢ɻ
PMLO bit = “1”, LOPS bit = “0”ͱ͢ΔͱɺύϫʔΞοϓ͠·͢ɻϞϊϥϧϥΠϯग़ྗ͸LOVL bitʹͯήΠϯΛ
ௐ੔͢Δ͜ͱ͕Ͱ͖·͢ɻ
L4DIF=LODIF bits = “1”ͷͱ͖ɺࠩಈग़ྗ৴߸͸(LOP) − (LON) = (IN4+) − (IN4−)ͱͳΓ·͢ɻ
DAC
“DACL”
“LOVL”
LOP pin
LON pin
PMLO
0
1
Figure 52. Mono Line Output
LOPS
Mode
LOP
LON
x
Power-down
Hi-Z
Hi-Z
1
Power-save
Hi-Z
VCOM
0
Normal Operation Normal Operation Normal Operation
Table 52. Mono Line Output Mode Setting (x: Don’t care)
Default
LOVL
0
1
Gain
Output Voltage (typ)
+6dB
1.2 x AVDD
Default
+8dB
1.5 x AVDD
Table 53. Mono Line Output Volume Setting
PMLO bit
LOPS bit
LOP pin
Hi-Z
Hi-Z
LON pin Hi-Z ^VCOM
VCOM
Hi-Z
Figure 53. Power-up/Power-down Timing for Mono Line Output
MS0543-J-00
- 60 -
2006/09