MB86330 Fujitsu Media Devices Limited, MB86330 Datasheet - Page 24
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MB86330
Manufacturer Part Number
MB86330
Description
16-bit Fixed-point DSP
Manufacturer
Fujitsu Media Devices Limited
Datasheet
1.MB86330.pdf
(46 pages)
- Current page: 24 of 46
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24
MB86330
[ ] : Indicates circular addressing.
AD0 : For “AD0,” you cannot specify circular addressing.
AD1 : For “AD1,” circular addressing mode is set automatically when “X7” is selected as the address register. With
AD2 : disp7 in “AD2” is signed 7 bits.
addressing
• Addressing modes
Mode
Direct
“0” set in the “MD” and “BV” registers, the same operation as ordinary addressing is performed even if “X7” is
selected as the address register.
AD0
AD1
AD2
[BV+X7 + + Y1]
[BV+Xn + + Y0]
[BV+Xn + + Y1]
[BV+X7 + + 3]
[BV+X7 + + 2]
[BV+X7 + + 1]
[BV+X7 + + 0]
[BV+X7 – – 1]
[BV+X7 – – 2]
[BV+X7 – – 3]
[BV+Xn + + 2]
[BV+Xn + + 1]
[BV+Xn + + 0]
[BV+Xn – – 1]
[BV+Xn – – 2]
[BV+Xn – – 3]
(Xm + + Y1)
(Xn + + Y0)
(Xn + + Y1)
(Xk + + Y0)
(BP+disp7)
Mnemonic
(Xm + + 3)
(Xm + + 2)
(Xm + + 1)
(Xm + + 0)
(Xm – – 1)
(Xm – – 2)
(Xm – – 3)
(Xk + + 1)
(Xk + + 0)
(Xk – – 1)
(Xn + + 2)
(Xn + + 1)
(Xn + + 0)
(Xn – – 1)
(Xn – – 2)
(Xn – – 3)
(imm16)
Effective address
BP+disp7
BV+X7
BV+X7
BV+X7
BV+X7
BV+X7
BV+X7
BV+X7
BV+X7
BV+Xn
BV+Xn
BV+Xn
BV+Xn
BV+Xn
BV+Xn
BV+Xn
BV+Xn
imm16
Xm
Xm
Xm
Xm
Xm
Xm
Xm
Xm
Xk
Xk
Xk
Xk
Xn
Xn
Xn
Xn
Xn
Xn
Xn
Xn
Register update
Not updated
Not updated
Not updated
Not updated
Not updated
Not updated
Not updated
Y0
Y1
Y1
Y0
Y1
Y0
Y1
+1
–1
+3
+2
+1
–1
–2
–3
+3
+2
+1
–1
–2
–3
+2
+1
–1
–2
–3
+2
+1
–1
–2
–3
16-bit direct addressing
Xk can be assigned X0,
X1, X2 and X3.
Xm can be assigned X4,
X5 and X6.
For circular addressing,
only X7 can be used.
Xn can be assigned X0,
X1, X2, X3, X4, X5, X6
and X7.
disp7 is signed 7 bits.
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