ACS422A68TAGZBX8 IDT, ACS422A68TAGZBX8 Datasheet - Page 38

• Manufacturer Part Number: ACS422A68TAGZBX8
• Description: Interface - CODECs
• Manufacturer: IDT

Specifications of ACS422A68TAGZBX8

• Rohs: yes
• Part # Aliases: IDTACS422A68TAGZBX8

ACS422x68
LOW-POWER, HIGH-FIDELITY, INTEGRATED CODEC
©2011 INTEGRATED DEVICE TECHNOLOGY, INC.
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Constant Output Power 1
Constant Output Power 2
R34 (22h)
Constant Output
Power 1
R35 (23h)
Constant Output
Power 2
Register Address
Register Address
3.14.3.2. Under Voltage Lock Out
When the PVDD supply becomes low, the BTL amplifier may be disabled to help prevent undesir-
able amplifier operation (overheat) or system level problems (battery under-voltage.)
The same circuit that monitors the PVDD supply to help maintain a constant output power is used to
monitor the PVDD supply for a critical under-voltage situation. If the sense circuit consistently returns
a 0 code then the PVDD supply is less than the minimum required for proper operation. To prevent
accidental shutdown due to a noisy supply at the minimum operating range, the output of the PVDD
sense circuit will be averaged for at least 200ms.
3.14.3.3. Registers
4:0
5:3
2:0
Bit
Bit
7
6
5
7
6
COPTarget[4:0]
AvgLength[2:0]
MonRate[2:0]
COPAtten
COPGain
HDeltaEn
RSVD
RSVD
Label
Label
Table 39. Constant Output Power 1 Register
Table 40. Constant Output Power 2 Register
Type
Type
RW
RW
RW
RW
RW
RW
R
R
Default
Default
000
100
38
8h
0
0
0
0
0
1 = Constant Output Power function will use attenuate
the BTL output if the PVDD sense circuit returns a code
higher than the target value.
1 = Constant Output Power function will use attenuate
the BTL output if the PVDD sense circuit returns a code
higher than the target value.
1 = If the PVDD code value has changed more than 4
counts since the last gain adjustment, the output will be
reduced rapidly then slowly returned to the target level.
5-bit target for the Constant Output Power function.
Reserved
Reserved
Number of sense cycles to average:
000 = 1
001 = 2
010 = 4
011 = 8
100 = 16
101 = 32
110 = 64
111 = 128
Rate the PVDD supply is monitored:
000 = 0.0625ms
001 = 0.125ms
010 = 0.25ms
011 = 0.5ms
100 = 1ms
101 = 2ms
110 = 4ms
111 = 8ms
Description
Description
ACS422X68
V1.6 01/13