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參數(shù)資料
| 型號： | TC9496AF |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 7/48頁 |
| 文件大?。?/td> | 561K |
| 代理商： | TC9496AF |
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TC9496AF
2002-01-11
15
2.2.3 Setting RAM (ACMP mode)
In ACMP mode, the TC9496AF does not write data directly to coefficient RAM (CRAM) or offset RAM (OFRAM). In this mode, data must be written to the
interface buffer RAM (IFB-RAM). Then, all the data are updated together in a period of 1 fs.
For example, if a signal flow filter is designed as in the following diagram, unless the K1 to K5 data are batch-updated, the circuit may resonate. The same
applies to the K6 to K10 data.
Using ACMP mode can reduce the noise caused by updating coefficients while the TC9496AF is operating.
IFB-RAM is 32-word memory. Therefore, data can be updated at one time in units of up to 32-words.
The length of the data field is 2
× n bytes, where n <= 32.
In ACMP mode, the IFOK pin outputs an ACMP operation end flag.
When ACMP operations complete, the flag is set to LOW ((1)) and is initialized at the next low chip select signal ((2)).
Operation at the time of transmitting other commands, before IFOK terminal was set to “L” level cannot be guaranteed.
Please set up again after initializing by RESET terminal or the initialization command.
MCU-I/F
IFB-RAM
CRAM
Write one by one
Update for 1 fs
K6
K1
K2
K3
K4
K5
K7
K8
K9
K10
+
CS
IFDI
IFCK
C3
C2
C5
C4
C7
C6
C1
C0
A3
A2
A5
A4
A7
A6
A1
A0
RA3
RA2
RA5
RA4
RA7
RA6
RA1
RA0
An: I
2
C ADDRESS
Cn: COMMAND
RAn: RAM-ADDRESS
Dn: Data
(MCU
→)
start
32h
HZ
end
RA11
RA10
RA13
RA12
RA15
RA14
RA9
RA8
D11
D10
D13
D12
D15
D14
D9
D8
HZ
A1
A0
A2
A3
A4
32h
IFOK
(2)
(1)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TC9496F-012A | 制造商:Panasonic Industrial Company 功能描述:IC |
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