Z89175 Zilog., Z89175 Datasheet - Page 60

• Manufacturer Part Number: Z89175
• Description: Voice Processing Controllers
• Manufacturer: Zilog.

Z8
Z89175/Z89176
Voice Processing Controllers
Expanded Register Bank F
60
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
EXPANDED REGISTER FILE REGISTERS (Continued)
(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
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
DS97TAD0100
Zilog