z89176 ZiLOG Semiconductor, z89176 Datasheet - Page 49

• Manufacturer Part Number: z89176
• Description: Voice Processing Controllers
• Manufacturer: ZiLOG Semiconductor

Zilog
DSP_IRQ2
DSP_IRQ1
DSP_IRQ0
DSP_MaskINT2
DSP_MaskINT1
DSP_MaskINT0
Z8_IRQ3
DSPintEnable
DSP_IPR2
DSP_IPR1
DSP_IPR0
Clear_IRQ2
DS97TAD0100
Field
interrupt DSP via DSP INT2.
After serving IRQ3,
set D0 to clear the
interrupt request.
On the Z8, set D1 to
Z8 Side
DSP CON
f---------------
f---------------
-e--------------
-e--------------
--d-------------
--d-------------
---c------------
----b-----------
-----a----------
------9---------
------9---------
-------8--------
--------7-------
---------6------
----------5-----
-----------4----
IRQ3 of the Z8
Table 15. EXT4 DSP Interrupt Control Register (ICR) Definition
Position
Figure 34. Interprocessor Interrupts Structure
P R E L I M I N A R Y
Attrib
R/W
R/W
R/W
R/W
R/W
R/W
R/W
9
W
W
W
W
R
R
R
R
R
1
0
Binary
Binary
Binary
Value
4
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
DSP INT2
interrupt Z8 via Z8 IRQ3.
The DSP sets D9 to
Voice Processing Controllers
After serving INT2,
set D4 to clear the
interrupt request.
DSP Side
Set_IRQ2
Reset_IRQ2
No effect
Set_IRQ1
Reset_IRQ1
No effect
Set_IRQ0
Reset_IRQ0
No effect
Enable_INT2
Disable_INT2
Enable_INT1
Disable_INT1
Enable_INT0
Disable_INT0
Return "0"
Set_Z8_IRQ3
Reset_Z8_IRQ3
Enable
Disable
IPR2
IPR1
IPR0
Return "0"
Z89175/Z89176
Label
(EXT4)
ICR
49
2