AK7756 Datasheet, PDF (5/27 Pages) Asahi Kasei Microsystems – DSP with Mono CODEC + Mic/Lineout Amp

■ DSP Block Diagram
CP0, CP1
DP0, DP1
CRAM
2048w x 20-Bit
DRAM
512w × 24-Bit
512w × 24-Bit
CBUS(20-Bit)
DBUS(24-Bit)
MPX20
MPX20
X
Y
Multiply
20 x 20 → 36-Bit
36-Bit
24-Bit
40-Bit
MUL DBUS
SHIFT
40-Bit
A
B
ALU
40-Bit
Overflow Margin: 4-Bit
40-Bit
DR0 ∼ 3
40-Bit
Over Flow Data
Generator
Division 20÷20→20 _{Peak Detector}
[AK7756]
DLP0, DLP1
DLRAM
3072w x 20-Bit
3072w x 20-Bit
DLRAM
Address
Pointer
OFREG
32w x 13-Bit
µP I/F
Control
Serial I/F
DEC
PRAM
3072w x 36-Bit
PC
Stack: 5 level(max)
TMP 12 x 24-Bit
PTMP(LIFO) 6 x 24-Bit
1 x 24-Bit
2 x 24-Bit
DIN2 (ADC or SDIN2 pin)
DIN1
1 x 24-Bit
2 x 24-Bit
2 x 24-Bit
DOUT3 (DAC or SDOUT3pin)
DOUT2
DOUT1
MS1218-E-00-PB
5
2010/08