參數(shù)資料
型號(hào): AK4648EC
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/HP/SPK-AMP
中文描述: 立體聲編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 76/119頁
文件大?。?/td> 1272K
代理商: AK4648EC
[AK4648]
MS0625-E-01
2007/06
- 76 -
Speaker-Amp
Speaker output mode is selected by SPKMN bit and Power ON/OFF of Speaker-Amp is controlled by PMSPL and
PMSPR bits. In Stereo SPK Mode (SPKMN bit = “1”, PMSPL=PMSPR bits = “1”) and Mono SPK Mode (SPKMN bit =
“0”, PMSPL bit = “1” or PMSPR bit = “1”), the output power is 640mW/ch at HVDD=3.6V, 8
Ω
. In High Power Mono
SPK Mode (SPKMN bit = “0”, PMSPL=PMSPR bit = “1”), the output power is 820mW at HVDD=3.6V, 8
Ω
. When
using High Power Mono SPK mode, SPLP pin should be connected to SPRP pin and SPLN pin should be connected to
SPRN pin. When SPKMN bit is changed, PMSPL and PMSPR bits should be set to “0”. Power-Save mode is controlled
by SPPSN bit.
Mode
SPKMN bit
PMSPL bit
Mono SPK
0
0
0
1
0
0
High Power Mono SPK
0
1
Stereo SPK
1
0
1
0
1
1
1
1
*1: The output signal is Mono Mixing [(L+R)/2]. The output power is 640mW at HVDD=3.6V, 8
Ω
.
*2: The output signal is Mono Mixing [(L+R)/2]. The output power is 820mW at HVDD=3.6V, 8
Ω
.
Table 64. Speaker Output Mode Setting (PD: Power-Down, PU: Power-Up)
Power supply for Speaker-Amp (HVDD) is 2.6V to 5.0V. The DAC or LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 signal is
input to the Speaker-amp as Mono: [(L+R)/2] or stereo signal. The input signal selects Mono or Stereo by using SPKMN
bit. The Speaker-amp is mono/stereo with BTL output. The gain is set by SPKG2-0 bits. Output level depends on AVDD
voltage and SPKG2-0 bits.
Gain
SPKG2-0 bits
ALC bit = “0”
000
+4.43dB
001
+6.43dB
010
+10.65dB
011
+12.65dB
100
0dB
101
-6dB
110
N/A
111
N/A
Table 65. SPK-Amp Internal gain (Gain of mono mixing is not included.), N/A: Not available
PMSPR bit
0
0
1
1
0
1
0
1
SPLP/SPLN pin SPRP/SPRN pin
PD
PU (*1)
PD
PU (*2)
PD
PD
PU: Lch
PU: Lch
PD
PD
PU (*1)
-
PD
PU: Rch
PD
PU: Rch
(default)
ALC bit = “1”
+6.43dB
+8.43dB
+12.65dB
+14.65dB
+2dB
-4dB
N/A
N/A
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