Z89175 Zilog., Z89175 Datasheet - Page 63
Z89175
Manufacturer Part Number
Z89175
Description
Voice Processing Controllers
Manufacturer
Zilog.
Datasheet
1.Z89175.pdf
(68 pages)
- Current page: 63 of 68
- Download datasheet (447Kb)
Zilog
Z8
DS97TAD0100
R241 TMR
R240
R242 T1
D7 D6 D5 D4
D7 D6 D5 D4 D3 D2 D1 D0
®
D7 D6 D5 D4
CONTROL REGISTERS
Figure 69. Counter/Timer 1 Register
Figure 68. Timer Mode Register
Figure 67. Reserved (F0H)
D3 D2 D1 D0
D3 D2 D1 D0
(F1H: Read/Write)
(F2H: Read/Write)
0 No Function
1 Load T1
TIN Modes
00 External Clock Input
01 Gate Input
10 Trigger Input
11 Trigger Input
0 No Function
1 Load T0
0 Disable T0 Count
1 Enable T0 Count
0 Disable T1 Count
1 Enable T1 Count
TOUT Modes
00 Not Used
01 T0 Out
10 T1 Out
11 Internal Clock Out (P36)
T1 Low Byte Initial Value
T1 Low Byte Current Value
(Non-retriggerable)
(Retriggerable)
(When Written)
(When Read)
RESERVED
P R E L I M I N A R Y
R243 PRE1
R244 T0
R243 PRE1
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2
D7 D6 D5
Figure 71. Counter/Timer 0 Register
Figure 70. Prescaler 1 Register
Figure 72. Prescaler 0 Register
D4 D3 D2 D1
(F4H: Read/Write)
(F3H: Write-Only)
(F5H: Write-Only)
D1
Voice Processing Controllers
D0
D0
Clock Source
Clock Source
Count Mode
Prescaler Modulo
Count Mode
Prescaler Modulo
T0 Low Byte Initial Value
T0 Low Byte Current Value
(Range: 1-64 Decimal
01-00 HEX)
(Range: 1-64 Decimal
01-00 HEX)
1 T1Internal
0 T1External Timing Input
1 T1Internal
0 T1External Timing Input
0 T1 Single Pass
1 T1 Modulo N
0 T1 Single Pass
1 T1 Modulo N
(When Written)
(When Read)
(TIN) Mode
(TIN) Mode
Z89175/Z89176
63
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