AK4705 Datasheet, PDF (24/50 Pages) Asahi Kasei Microsystems – 2ch 24bit DAC with AV SCART Switch

[AK4705]
■ Volume Control #0, #2 (4-Level Volume)
The AK4705 has a 4-level volume control (Volume #0, #2) as shown in Table 9 and Table 10. The volume reflects the
change of register value immediately.
(03H: D4-D3)
DVOL1 DVOL0
0
0
0
1
1
0
1
1
Volume #0 Gain
Output Level (Typ)
0dB
2Vrms (with 0dBFS input & volume #1=0dB)
-6dB
1Vrms (with 0dBFS input & volume #1=0dB.)
+2.44dB
2.65Vrms (with 0dBFS input & volume #1=0dB.)
+4dB
2Vrms (with –10dBFS input & volume #1=+6dB.
Clips over –2.5dBFS digital input.)
Table 9. Volume #0 (at DAPD bit = “0”. DAC mode)
(default)
(03H: D4-D3)
DVOL1 DVOL0 Volume #2 Gain
Output Level (Typ)
0
0
+6dB
2Vrms (with 1Vrms input & volume #1=0dB)
0
1
0dB
1Vrms (with 1Vrms input & volume #1=0dB.)
1
0
(reserved)
-
1
1
(reserved)
-
Table 10. Volume #2 (at DAPD bit = “1”. analog input mode.)
(default)
MS0451-E-01
- 24 -
2007/06