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參數資料
| 型號： | TLV320DAC3120IRHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 24-BIT DAC, PQCC32 |
| 封裝： | 5 X 5 MM, PLASTIC, QFN-32 |
| 文件頁數： | 74/110頁 |
| 文件大小： | 1230K |
| 代理商： | TLV320DAC3120IRHBR |
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SLAS659 – NOVEMBER 2009
www.ti.com
Page 0 / Register 116: VOL/MICDET-Pin SAR ADC – Volume Control
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7
R/W
0
0: DAC volume control is controlled by control register. (7-bit Vol ADC is powered down)
1: DAC volume control is controlled by pin.
D6
R/W
0
0: Internal on-chip RC oscillator is used for the 7-bit Vol ADC for pin volume control.
1: MCLK is used for the 7-bit Vol ADC for pin volume control.
D5–D4
R/W
00
00: No hysteresis for volume control ADC output
01: Hysteresis of ±1 bit
10: Hysteresis of ±2 bits
11: Reserved. Do not write this sequence to these bits.
D3
R/W
0
Reserved. Write only reset value.
D2–D0
R/W
000
Throughput of the 7-bit Vol ADC for pin volume control, frequency based on MCLK or internal oscillator.
MCLK = 12 MHz
Internal Oscillator Source
000: Throughput =
15.625 Hz
10.68 Hz
001: Throughput =
31.25 Hz
21.35 Hz
010: Throughput =
62.5 Hz
42.71 Hz
011: Throughput =
125 Hz
8.2 Hz
100: Throughput =
250 Hz
170 Hz
101: Throughput =
500 Hz
340 Hz
110: Throughput =
1 kHz
680 Hz
111: Throughput =
2 kHz
1.37 kHz
Note: These values are based on a nominal oscillator
frequency of 8.2 MHz. Values will scale to the actual
oscillator frequency.
Page 0 / Register 117: VOL/MICDET-Pin Gain
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7
R/W
0
Reserved. Write only zero to this bit.
D6–D0
R
XXX XXXX
000 0000: Gain applied by pin volume control = 18 dB
000 0001: Gain applied by pin volume control = 17.5 dB
000 0010: Gain applied by pin volume control = 17 dB
...
010 0011: Gain applied by pin volume control = 0.5 dB
010 0100: Gain applied by pin volume control = 0 dB
010 0101: Gain applied by pin volume control = –0.5 dB
...
101 1001: Gain applied by pin volume control = –26.5 dB
101 1010: Gain applied by pin volume control = –27 dB
101 1011: Gain applied by pin volume control = –28 dB
...
111 1101: Gain applied by pin volume control = –62 dB
111 1110: Gain applied by pin volume control = –63 dB
111 1111: Reserved.
Page 0 / Registers 118 to 127: Reserved
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7–D0
R/W
XXXX XXXX
Reserved. Do not write to these registers.
6.3
Control Registers, Page 1: DAC Routing, Power-Controls and MISC Logic Related
Programmabilities
Page 1 / Register 0: Page Control Register
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7–D0
R/W
0000 0000
0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected
66
REGISTER MAP
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV320DAC3120
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