參數(shù)資料
型號: HD404628R
廠商: Hitachi,Ltd.
英文描述: AS Microcomputer Incorporating a DTMF Generator Circuit(微計(jì)算機(jī)帶雙音多頻發(fā)生器電路)
中文描述: 由于微機(jī)安裝有雙音多頻發(fā)電機(jī)斷路器(微計(jì)算機(jī)帶雙音多頻發(fā)生器電路)
文件頁數(shù): 100/155頁
文件大?。?/td> 549K
代理商: HD404628R
HD404629R Series
100
Tone Generator Mode Register (TGM: $019):
Four-bit write-only register, which controls output
frequencies as shown in figure 89, and is reset to $0 by MCU reset.
Bit
Initial value
Read/Write
Bit name
3
0
W
TGM3
2
0
W
TGM2
0
0
W
TGM0
1
0
W
TGM1
Tone generator mode register (TGM: $019)
TGM3
0
0
1
1
TGM2
0
1
0
1
TONEC output frequencies
f
C1
(1,209 Hz)
f
C2
(1,336 Hz)
f
C3
(1,477 Hz)
f
C4
(1,633 Hz)
TGM1
0
0
1
1
TGM0
0
1
0
1
TONER
output frequencies
f
R1
(697 Hz)
f
R2
(770 Hz)
f
R3
(852 Hz)
f
R4
(941 Hz)
Figure 89 Tone Generator Mode Register (TGM)
Tone Generator Control Register (TGC: $01A):
Three-bit write-only register, which controls the
start/stop of the DTMF signal output as shown in figure 90, and is reset to $0 by MCU reset. TONER and
TONEC output can be independently controlled by bits 3 and 2 (TGC3, TGC2), and the DTMF circuit is
controlled by bit 1 (TGC1) of this register.
Bit
Initial value
Read/Write
Bit name
3
0
W
TGC3
2
0
W
TGC2
0
Not used
1
0
W
TGC1
Tone generator control register (TGC: $01A)
TGC1
0
1
DTMF enable bit
DTMF disable
DTMF enable
TGC2
0
1
TONER output control (row)
No output
TONER output (active)
TGC3
0
1
TONEC output control (column)
No output
TONEC output (active)
Figure 90 Tone Generator Control Register (TGC)
相關(guān)PDF資料
PDF描述
HD4074629 AS Microcomputer Incorporating a DTMF Generator Circuit(微計(jì)算機(jī)帶雙音多頻發(fā)生器電路)
HD404629R AS Microcomputer Incorporating a DTMF Generator Circuit(微計(jì)算機(jī)帶雙音多頻發(fā)生器電路)
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