Z89139 View Datasheet(PDF) - Zilog
Part Name
Description
MFG CO.
'Z89139' PDF : 66 Pages View PDF
Zilog
Z89138/Z89139
Voice Processing Controllers
Interrupts. The Z8 has six different interrupts from six dif- counter/timers, and one by the DSP (Table 6). The Inter-
ferent sources. The interrupts are maskable and prioritized rupt Mask Register globally or individually enables or dis-
(Figure 22). The six sources are divided as follows; three ables the six interrupt requests.
sources are claimed by Port 3 lines P33-P31, two by
1
IRQ0 IRQ2
IRQ1, 3, 4, 5
Interrupt
Edge
Select
IRQ Register
(D6, D7)
IRQ
IMR
6
Interrupt
Request
Global
Interrupt
Enable
IPR
Priority
Logic
Vector Select
Figure 22. Interrupt Block Diagram
Name
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
Table 6. Interrupt Types, Sources, and Vectors
Source
/DAV0, P32, AN2
/DAV1, P33
/DAV2, P31, TIN, AN2
IRQ3
T0
TI
Vector Location
Comments
0, 1
2, 3
4, 5
6, 7
8, 9
10, 11
External (P32), Programmable Rise or Fall Edge Triggered
External (P33), Fall Edge Triggered
External (P31), Programmable Rise or Fall Edge Triggered
Internal (DSP activated), Fall Edge Triggered
Internal
Internal
DS97TAD0201
PRELIMINARY
33
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