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Z89175 Datasheet(PDF) 65 Page - Zilog, Inc.

Part # Z89175
Description  Voice Processing Controllers
PDF  68 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z89175 Datasheet(HTML) 65 Page - Zilog, Inc.

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Z89175/Z89176
Zilog
Voice Processing Controllers
DS97TAD0100
P R E L I M I N A R Y
65
2
Figure 77. Interrupt Request Register
(FAH: Read/Write)
Figure 78. Interrupt Mask Register
(FBH: Read/Write)
Figure 79. Flag Register
(FCH: Read/Write)
D7
D6
D5
D4
D3
D2
D1
D0
R250 IRQ
Inter Edge
P31
↓ P32 ↓ = 00
P31
↓ P32 ↑ = 01
P31
↑ P32 ↓ = 10
P31
↑↓ P32 ↑↓ = 11
IRQ0 = P32 Input
IRQ1 = P33 Input
IRQ2 = P31 Input
IRQ3 = DSP
IRQ4 = T0
IRQ5 = T1
D7
D6
D5
D4
D3
D2
D1
D0
1 Enables RAM Protect
1 Enables IRQ0-IRQ5
(D0 = IRQ0)
1 Enables Interrupts
R251 IMR
D7
D6
D5
D4
D3
D2
D1
D0
R252 FLAGS
User Flag F1
User Flag F2
Half Carry Flag
Decimal Adjust Flag
Overflow Flag
Sign Flag
Zero Flag
Carry Flag
Figure 80. Register Pointer
(FDH: Read/Write)
Figure 81. Stack Pointer High
(FEH: Read/Write)
Figure 82. Stack Pointer Low
(FFH: Read/Write)
D7 D6
D5
D4
D3
D2
D1
D0
R253 RP
Expanded Register File Bank
Working Register Group
D7 D6
D5
D4
D3
D2
D1
D0
Stack Pointer Upper
Byte (SP8 - SP15)
R254 SPH
D7 D6
D5
D4 D3
D2
D1
D0
Stack Pointer Lower
Byte (SP0 - SP7)
R255 SPL



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