ak4516a AKM Semiconductor, Inc., ak4516a Datasheet - Page 26

• Manufacturer Part Number: ak4516a
• Description: 3v 16bit Adc&dac With Built-in Pga
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Peak Hold
M0026-E-00
Addr
04H Peak Hold Low Byte Lch
05H Peak Hold High Byte Lch
06H Peak Hold Low Byte Rch
07H Peak Hold High Byte Rch
LTM1
LTM1-0:Zero crossing timeout(ZELM="1") or Update period(ZELM="0") at the auto limitter mode
ZELM: Enables zero crossing detection at the auto limitter operation (0: Disable, 1: Enable)
These bits are reset by PD pin="L", then inhibits writing to these bits.
PLL7-0:
PUL7-0:
PLR7-0:
PUR7-0:
The peak is held L/R audio data independently. These registers are reset by reading 8bit of MSB, reading 8bit
of both MSB and LSB should be continuity controlled by reading in order of 8 bit of MSB from LSB. After
reading the 8 bit of LSB the last, 8 bit of MSB is lost by reading 8 bit of LSB the last. Sign bits (PUL7, PUR7)
becomes "0" as the output value is the absolute value.
These registers are reset on the following any conditions.
0
0
1
1
PD
PM1="0"
Register Name
pin="L"
LTM0
RESET
Peak hold of Lch (Absolute value), 8bit of LSB (FFH 00H)
Peak hold of Lch (Absolute value), 8bit of MSB (7FH 00H)
Peak hold of Rch (Absolute value), 8bit of LSB (FFH 00H)
Peak hold of Rch (Absolute value), 8bit of MSB (7FH 00H)
0
1
0
1
R/W
Table 6 . Zero crossing timeout or Update period at the auto limitter mode
0: The IPGA value is changed immediately. When the IPGA value is changed continuously,
the change is done by the period specified by LTM1-0.
1: When IPGA of each L/R channel do zero crossing or timeout independently, the IPGA
value is changed by auto limitter operation.
129/fs
258/fs
516/fs
1032/fs
Zero crossing timeout(ZELM="1")
48kHz
10.8ms
21.5ms
2.7ms
5.4ms
PUR7
PUL7
PLR7
PLL7
D7
44.1kHz
11.7ms
23.4ms
2.9ms
5.9ms
PUR6
PUL6
PLR6
PLL6
D6
- 26 -
PUR5
PUL5
PLR5
PLL5
32kHz
D5
16.1ms
32.3ms
4.0ms
8.1ms
PUR4
PUL4
PLR4
PLL4
D4
1/fs
2/fs
4/fs
8/fs
00H
RD
PUR3
PUL3
PLR3
PLL3
Update period(ZELM="0")
D3
48kHz
167us
21us
42us
83us
(LTM1="1", LTM0="0"@RESET)
PUR2
PUL2
PLR2
PLL2
D2
44.1kHz
181us
23us
45us
91us
PUR1
PUL1
PLR1
PLL1
D1
[AK4516A]
1998/08
32kHz
125us
250us
PUR0
PUL0
PLR0
PLL0
31us
63us
D0