Power Driver Integrated Full Digital Audio Amplifier
control by Minimum b‟10 Minimum pulse width = 4
NTP-8230
pulse width
for Ch 1&2
Modulation index
control by Minimum
pulse width for Ch 3
b‟01
b‟00
b’11
b‟10
b‟01
b‟00
Minimum pulse width = 6
Minimum pulse width = 8
Minimum pulse width = 2
Minimum pulse width = 4
Minimum pulse width = 6
Minimum pulse width = 8
Type 1 (fourth order)
MD3
NT
M0
Noise shaping Type b’0
for Ch 1&2
Dither Position
Selector
b‟1
Type 2 (fifth order)
b’00
b‟01
b‟10
b‟11
No left shift on dither value = Dither off
1bit left shift on dither value
2bit left shift on dither value
3bit left shift on dither value
Reserved addr 0x56~0x5D
Addr 0x5E: System Error Status (Read-only)
Bit
7
6
5
4
3
2
1
0
Name
FSI
MPW
LSRC
ULCK
PPM
Name
PPM
Description
Permanent
Value
b‟0
Meaning
Ref.
PWM_MASK
Indication flag
Sampled PLL
Unlock error
b‟1
Indicated that PWM_MASK is
in Permanent LOW state
PLL is locked state.
PLL is unlocked state.
SRC is unlocked state.
SRC is locked state
Ratio is incorrect.
Ratio is correct.
8 kHz
11.025 KHz
12 kHz
16 kHz
22.025kHz
24 kHz
32 kHz
44.1 kHz
48 kHz
88.2 kHz
96 kHz
192 kHz
ULCK
LSRC
MPW
FSI
b‟0
b‟1
b‟0
b‟1
b‟0
b‟1
b‟0000
b‟0001
b‟0010
b‟0011
b‟0100
b‟0101
b‟0110
b‟0111
b‟1000
b‟1001
b‟1010
b‟1011
SRC lock status
MCK/WCK
Ratio error
Sampling
Frequency
Information
Reserved addr 0x5F~0x60
Addr 0x61: I2S Glitch filter
Bit
7
6
5
4
3
2
1
0
Name
GFE
WTH
Name
Description
Value
Meaning
Ref.
Copyright ⓒ NeoFidelity, Inc.
Page 41
Document Number: DS8230 draft ver. 0.1
2011-01-11
ETC [ ETC ]
