參數(shù)資料
型號： SI3212
廠商： Electronic Theatre Controls, Inc.
元件分類： Codec
英文描述： PROSLIC PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION
中文描述： ProSLIC產(chǎn)品可編程的CMOS用戶接口/有振鈴編解碼器/電池電壓生成
文件頁數(shù)： 32/122頁
文件大?。?/td> 1950K
代理商： SI3212
Si3210/Si3211/Si3212
32
Preliminary Rev. 1.11
time the 16-bit counter will reset to zero and begin
counting until the inactive timer expires. The cadence
continues until the user clears the O1TAE and O1TIE
control bits. The zero crossing detect feature can be
implemented by setting the OZ1 bit (direct Register 32,
bit 5). This ensures that each oscillator pulse ends
without a dc component. The timing diagram in
Figure 19 is an example of an output cadence using the
zero crossing feature.
One-shot oscillation can be achieved by enabling O1E
and O1TAE. Direct control over the cadence can be
achieved by controlling the O1E bit (direct Register 32,
bit 2) directly if O1TAE and O1TIE are disabled.
The operation of tone generator 2 is identical to that of
tone generator 1 using its respective control registers.
Note:
Tone Generator 2 should not be enabled simulta-
neously with the ringing oscillator due to resource shar-
ing within the hardware.
Continuous
phase
frequency-shift
waveforms may be created using tone generator 1 (not
available on tone generator 2) by setting the REL bit
(direct Register 32, bit 6), which enables reloading of
the OSC1, OSC1X, and OSC1Y registers at the
expiration of the active timer (OAT1).
keying
(FSK)
Table 27. Associated Tone Generator Registers
Tone Generator 1
Description / Range
Sets oscillator frequency
Sets oscillator amplitude
Sets initial phase
0 to 8 sec
0 to 8 sec
Status and control
registers
Parameter
Register Bits
OSC1[15:0]
OSC1X[15:0]
OSC1Y[15:0]
OAT1[15:0]
OIT1[15:0]
OSS1, REL, OZ1,
O1TAE, O1TIE,
O1E, O1SO[1:0]
Location
Oscillator 1 Frequency Coefficient
Oscillator 1 Amplitude Coefficient
Oscillator 1 initial phase coefficient
Oscillator 1 Active Timer
Oscillator 1 Inactive Timer
Oscillator 1 Control
Indirect Register 13
Indirect Register 14
Indirect Register 15
Direct Registers 36 & 37
Direct Register 38 & 39
Direct Register 32
Tone Generator 2
Description / Range
Sets oscillator frequency
Sets oscillator amplitude
Sets initial phase
0 to 8 sec
0 to 8 sec
Status and control
registers
Parameter
Register
OSC2[15:0]
OSC2X[15:0]
OSC2Y[15:0]
OAT2[15:0]
OIT2[15:0]
OSS2, OZ2,
O2TAE, O2TIE,
O2E, O2SO[1:0]
Location
Oscillator 2 Frequency Coefficient
Oscillator 2 Amplitude Coefficient
Oscillator 2 initial phase coefficient
Oscillator 2 Active Timer
Oscillator 2 Inactive Timer
Oscillator 2 Control
Indirect Register 16
Indirect Register 17
Indirect Register 18
Direct Registers 40 & 41
Direct Register 42 & 43
Direct Register 33
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