NTP3000 View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'NTP3000' PDF : 37 Pages View PDF
Power Integrated Processor for Digital Amplifier
NTP3000
S
Slave address
W A AIF Sub-address
A
(a)
Data
AP
S
Slave address
W A AIF Sub-address
A
Data
A AIF Sub-address
A
Data
A
P
(b)
S
Slave address
W A AIF Sub-address
A
Data
A
(c)
Data
AP
Figure 5 Write Mode Sequence
If AIF=0, sub-Address and data can be repeatedly written after master sends NTP3000 the slave
Address with write operation bit (W) and checks ACK from NTP3000.
If AIF=1, data can be repeatedly written with auto-incremented Address.
4.3.2. Read Operation from NTP3000
Master can read data from NTP3000 by using combined format. Figure 6 shows all the possible
procedures of read operation in NTP3000.
S
Slave address
W A AIF Sub-address
A Sr Slave address R A
Data
NAK P
S
Slave address
W A AIF Sub-address
A Sr Slave address R A
Data
A
Data
NAK P
Figure 6 Read Mode Sequence
Followed by START condition, master notices the data transfer mode by sending the slave Address with
write operation bit (W). After checking ACK, master sends NTP3000 the sub-Address with AIF=1 and
checks ACK from NTP3000. To change the operation from writing to reading, master sends the START
condition without STOP condition as repeated start condition (Sr). Followed by Sr, master resends the
slave Address with reading operation bit (R) and checks ACK. Then master can read 1-byte or multi-
bytes from NTP3000. To finish the reading operation, master sends NAK data and STOP condition after
reading the last byte.
4.3.3. Downloading biquad filter coefficients and loudness gain
There are 33 programmable biquad filters. To download the filter coefficients of each biquad, the biquad
filter page flag should be set appropriate value.
The number of registers is shown in Table 2.
Post Biquad of CH1
(0x3F = 0x01 case)
Post Biquad of CH2
(0x3F = 0x02 case)
GEQ of CH1
(GEQC flags of 0x06
register = 0b11 &
0x3F = 0x04 case)
0x40 ~ 0x44
BQ1
BQ1
BQ1
0x45 ~ 0x49
BQ2
BQ2
BQ2
0x4A ~ 0x4E
BQ3
BQ3
BQ3
0x4F ~ 0x53
BQ4
BQ4
BQ4
0x54 ~ 0x58
BQ5
BQ5
BQ5
Copyright © NeoFidelity, Inc. 2005
Preliminary datasheet – NeoFidelity reserves the right to change specifications at any time without prior notice
7
R0.73-11.2006
Share Link: 
