Z89139 Zilog., Z89139 Datasheet - Page 57

• Manufacturer Part Number: Z89139
• Description: Voice Processing Controllers
• Manufacturer: Zilog.

Zilog
Expanded Register Bank F
DS97TAD0201
Note: Reset condition is 11111110
PCON (F) %00
P4M (FH) 03H
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2
Figure 59. Port Configuration Register (PCON)
Figure 58. Incoming Register from DSP EXT3
(B) 0F
P4D (FH) 02H
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Figure 61. Port 4 Mode Register
Figure 60. Port 4 Data Register
(F) 02H [Read/Write]
(B) 0FH [Read-Only]
(F) 00H [Write-Only]
(F) 03H [Write-Only]
(Low Byte)
D1 D0
R Always "1"
W 0 P34,P37 Standard output
R Always "1"
W No effect
1 P34,P37 Comparator output
P40-P47 I/O Definition
0 Defines Bit as Output
1 Defines Bit as Input
DSP EXT3,
Bits D7-D0
Data
Returns "FF" Upon Read
P R E L I M I N A R Y
P45M (FH) 06H
(Write only)
D7 D6 D5 D4 D3
P5M (FH) 05H
* Default setting after Reset
D7 D6 D5 D4 D3 D2 D1 D0
Figure 64. Port 4 and 5 Configuration Register
P5D (FH) 04H
D7 D6 D5 D4 D3 D2 D1 D0
Figure 63. Port 5 Mode Register
Figure 62. Port 5 Data Register
(F) 04H [Read/Write]
(F) 05H [Write-Only]
(F) 06H [Write-Only]
D2 D1 D0
Voice Processing Controllers
P50-P57 I/O Definition
0 Defines Bit as Output
1 Defines Bit as Input*
Data
Port 4 Configuration Bit
No effect
Port 5 Configuration Bit
No effect
Returns "FF" Upon Read
0 Open-Drain
1 Push-pull
0 Open-Drain
1 Push-pull
Z89138/Z89139
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