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參數(shù)資料
| 型號： | THS14F03EVM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | THS14F03EVM(THS14F03評估板) |
| 中文描述： | THS14F03EVM（THS14F03評估板） |
| 文件頁數(shù)： | 31/39頁 |
| 文件大?。?/td> | 523K |
| 代理商： | THS14F03EVM |
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Read Block Function
3-14
/* IP = 1, INT high active */
/* FP = 1, FIFO OVL high active */
/* FC = 1, FIFO enabled */
/* 8 F3:0 = 8, 16 word trigger level */
#define ADC_PGA (0)
#define ADC_OFFSET (0) /* LSBs */
#define ADC_RES_ADDR (unsigned int *) (0x01400040)
#define ADC_PGA_ADDR (unsigned int *) (0x01400044)
#define ADC_OFF_ADDR (unsigned int *) (0x01400048)
#define ADC_CTL_ADDR (unsigned int *) (0x0140004C)
/* receive ISR data */
int *pRData = 0;
unsigned int uiRCount = 0; /* samples left in block transfer */
unsigned int uiDCount = 0; /* DMA segment size */
unsigned int uiThreshold = 0; /* FIFO trigger level */
/* pointer to callback function (called at the end of a block transfer */
void (*r_callback) (void *) = 0;
/* points to current destination memory */
int iDMACtrl = DMA_CTRL_VALUE;
/* receive interrupt service routine (DMA0) */
interrupt void ths140x_risr(void)
{
pRData += uiDCount;
uiRCount –= uiDCount;
/* point to next DMA destination segment */
/* subtract last DMA segment size from */
/* receive counter */
if (!uiRCount) /* check, if the whole block has been transfered */
{
*(int*) DMA_CTRL &= !0x1;
/* disable DMA */
if (r_callback)
/* call callback function at the end */
/* of the block transfer */
r_callback(0);
return;
}
/* calculate new DMA segment size and set new DMA values*/
if (uiRCount < uiThreshold)
uiDCount = uiRCount;
else
uiDCount = uiThreshold;
*(int*) DMA_TCT = 0x00020000 | uiDCount;
*(int*) DMA_DST = (int) pRData;
*(int*) DMA_CTRL2 = 0x00000008;
/* 8 FRAME IE = 1, frame interrupt en-
abled */
*(int*) DMA_CTRL = iDMACtrl;
IER |= 0x0103;
}
/* write PGA, offset and control value to THS140x */
void ths140x_configure(unsigned int pga, unsigned int offset, unsigned
int ctrl)
{
*ADC_PGA_ADDR = pga;
*ADC_OFF_ADDR = offset;
*ADC_CTL_ADDR = ctrl;
}
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| THS14F03IPFB | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-bit 3 MSPS with 32-word FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| THS14F03IPFBG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-bit 3 MSPS with 32-word FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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| THS15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
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