ak5354 AKM Semiconductor, Inc., ak5354 Datasheet - Page 14

• Manufacturer Part Number: ak5354
• Description: Low Power 20bit ?? Adc With Pga
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Input Analog PGA Control
MS0054-E-02
Addr
03H
ZEIP:
IPGA6-0: Input Analog PGA. 97 levels. 00H=MUTE.
Register Name
Input Analog PGA Control
RESET
Select IPGA zero crossing operation (0: Disable, 1: Enable)
detection or timeout independently.
In the timeout cycle, it is possible to set in ZTM1-0 bit.
When ZTM1-0 is “11”, timeout cycle is 2048/fs = 46.4ms (@fs=44.kHz).
the operation which is the same as the case of ZEIP = “0”.
ON/OFF of zero crossing detection can be controlled by ZEIP bit.
Inhibits writing at PM0 = “0”.
When ZEIP is “0”, IPGA changes immediately. When PM1 is “0”, ZEIP is ignored and IPGA does
Writing to IPGA value at ZEIP = “1”, IPGA value of L/R channels changes by zero crossing
DATA
5EH
0EH
60H
5FH
28H
27H
19H
18H
17H
16H
11H
10H
0FH
05H
04H
03H
02H
01H
00H
ZEIP
•
•
•
•
D7
0
Table 4. Input Gain Setting
GAIN(dB)
IPGA6
MUTE
D6
+28.0
+27.5
+27.0
-10.0
-15.0
-16.0
-18.0
-20.0
-38.0
-40.0
-44.0
-48.0
-52.0
+0.0
-0.5
-7.5
-8.0
-9.0
•
•
•
•
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IPGA5
D5
0.5dB
Step
1dB
2dB
4dB
IPGA4
D4
00H (MUTE)
Level
73
12
IPGA3
8
3
1
D3
IPGA2
D2
IPGA1
D1
[AK5354]
2004/12
IPGA0
D0