AK7712A-VT Datasheet, PDF (34/87 Pages) Asahi Kasei Microsystems – Built-in 20-bit ADC/DAC Sophisticated Audio DSP

ASAHI KASEI
[AK7712A-VT]
Set value of shift number
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Shift Set value of shift number
no shift
00000
1 bit to right
00001
2 bits to right
00010
3 bits to right
00011
4 bits to right
00100
5 bits to right
00101
6 bits to right
00110
7 bits to right
00111
8 bits to right
01000
9 bits to right
01001
10 bits to right
01010
11 bits to right
01011
12 bits to right
01100
13 bits to right
01101
14 bits to right
01110
15 bits to right
01111
Shift
no shift
1 bit to right
2 bits to right
3 bits to right
4 bits to right
5 bits to right
6 bits to right
7 bits to right
8 bits to right
9 bits to right
10 bits to right
11 bits to right
12 bits to right
13 bits to right
14 bits to right
15 bits to right
The function of shift is shown as follows.
<List of Shift Relational Command >
SH0: the product with no shift
*BH0 : the DBUS data with no shift
SHR1: the product shifted 1 bit to right
SHR2: the product shifted 2 bits to right
*BHR1: the DBUS data shifted 1 bit to right
*BHR2: the DBUS data shifted 2 bits to right
SHR3: the product shifted 3 bits to right
*BHR3: the DBUS data shifted 3 bits to right
SHR4: the product shifted 4 bits to right
*BHR4: the DBUS data shifted 4 bits to right
SHR6: the product shifted 6 bits to right
SHR8: the product shifted 8 bits to right
*BHR6: the DBUS data shifted 6 bits to right
*BHR8 the DBUS data shifted 8 bits to right
SHRF: the product shifted 15 bits to right *BHRF the DBUS data shifted 15 bits to right
SHL1: the product shifted 1 bit to left
*BHL1: the DBUS data shifted 1 bit to left
SHL2: the product shifted 2 bits to left
SHL3: the product shifted 3 bits to left
*BHL2: the DBUS data shifted 2 bits to left
*BHL3: the DBUS data shifted 3 bits to left
SHL4: the product shifted 4 bits to left
*BHL4: the DBUS data shifted 4 bits to left
SHL6: the product shifted 6 bits to left
SHL8: the product shifted 8 bits to left
*BHL6: the DBUS data shifted 6 bits to left
*BHL8: the DBUS data shifted 8 bits to left
SHLF: the product shifted 15 bits to left
*BHLF: the DBUS data shifted 15 bits to left
#SDLF: the product shifted 15 bits to left
*#BDRF: the DBUS data shifted 15 bits to left
@SHR:Input the indirect shift value from DBUS(5 bits connection from MSB)
* : The use restriction is exist. (It can use when the input of multiplication is set to CRAM,DRAM.)
#: Special command used at double-precision calculation(45 × 31, 45 × 16).
0180-E-02
- 34 -
1997/12