TC94A04AFG Datasheet, PDF (21/42 Pages) Toshiba Semiconductor – 1 chip Audio Digital Processor

TC94A04AFG/AFDG
Command-47h (0100 0111): CRAM-ACMP
D15 D14 D13 D12 D11 D10
0
0
0
0
0
0
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0
CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM
A8 A7 A6 A5 A4 A3 A2 A1 A0
Bit
Name
Description
Value
Operation
D15
to
⎯
Fixed to 0 (zero)
⎯
⎯
D9
D8
to
D0
CRAMA
[8:0]
CRAM (coefficient RAM) head
address
000h
to
17Fh
CRAM address of the head at the time of writing in by 47h
command is set up.
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM CRAM
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Bit
Name
Description
D15
CRAMD
to
CRAM data
D0
[15:0]
Value
Operation
7FFFh
to Set CRAM data (two-complement-form formula)
8000h
It is CRAM write-in command which used the address compare mode. A maximum of 32 words is
written at once.
The data written in continuously are sent after transmitting CRAM head address (2 bytes).
Enable a sequential write to RAM.
47h-CRAM address (2 bytes)-data (2 bytes)-data (2 bytes)-･････････-data (2 bytes)
(CRAM: 384 word)
21
2005-09-28