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| 型號(hào)： | TLV320AIC26IRHB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁(yè)數(shù)： | 30/67頁(yè) |
| 文件大?。?/td> | 883K |
| 代理商： | TLV320AIC26IRHB |
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TLV320AIC26
SLAS412 DECEMBER 2003
www.ti.com
36
’AIC26 CONTROL REGISTERS
This section describes each of the registers shown in the memory map of Table 6. The registers are grouped according
to the function they control. In the ’AIC26, bits in control registers can refer to slightly different functions depending on
whether you are reading the register or writing to it.
’AIC26 Data Registers (Page 0)
The data registers in Page 0 of the ’AIC26 hold data results from auxiliary ADC. All of these registers default to 0000H on
reset. These registers are read only.
BAT1, BAT2, AUX, TEMP1 and TEMP2 Registers
The results of all A/D conversions are placed in the appropriate data register. The data format of the result word, R, of these
registers is right-justified, as follows:
BIT 15
MSB
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LSB
0
R11
MSB
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
R0
LSB
All the updated data registers should be read back either with a single SPI transaction as shown in Figure 31 or by reading
in descending order of address (i.e., higher address data first and lower address data next). For example, read the updated
registers in order of AUX, BAT2, and then BAT1 instead of BAT1, BAT2, and then AUX.
PAGE 1 CONTROL REGISTER MAP
REGISTER 00H: ADC Control
BIT
NAME
READ/
WRITE
RESET VALUE
FUNCTION
D15
R
0
Reserved.
Note: The value of this bit should always be set to zero.
D14
ADST
R/W
1(for read status)
0(for write status)
A/D Status.
READ
0 => ADC is busy
1 => ADC is not busy (default)
WRITE
0 => Normal mode. (default)
1 => Stop conversion and power down. Power down happens immediately
D1310
ADSCM
R/W
0000
A/D Scan Mode.
0000 => No scan
0001 => Reserved
0010 => Reserved
0011 => Reserved
0100 => Reserved
0101 => Reserved
0110 => BAT1 input is converted, and the result is returned to the BAT1 data register.
0111 => BAT2 input is converted, and the result is returned to the BAT2 data register.
1000 => AUX input is converted, and the result is returned to the AUX data register.
1001 => Scan function: AUX input is converted and the result is returned to the AUX data
register. Scan continues until stop bit is sent.
1010 => TEMP1 is converted, and the result is returned to the TEMP1 data register.
1011 => Port scan function: BAT1, BAT2, and AUX inputs are measured and the results
returned to the appropriate data registers.
1100 => TEMP2 is converted, and the result is returned to the TEMP2 data register.
1101 => Reserved
1110 => Reserved
1111 => Reserved
D9D8
RESOL
R/W
00
Resolution Control. The A/D converter resolution is specified with these bits.
00 => 12bit resolution
01 => 8bit resolution
10 => 10bit resolution
11 => 12bit resolution
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