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參數(shù)資料
| 型號(hào)： | LTC1403 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Serial 12-Bit/14-Bit, 2.8Msps Sampling ADCs with Shutdown |
| 中文描述： | 串行12-Bit/14-Bit，2.8Msps采樣ADC，帶有關(guān)斷 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大小： | 323K |
| 代理商： | LTC1403 |
17
LTC1403/LTC1403A
1403af
* negative edge BCLKR
* negative BFSR pulse
* no data shifted
* 1' cable from counter to CONV at DUT
* 2' cable from counter to CLK at DUT
*No right shift is needed to right justify the input data in the main program
*the two msbs should also be masked
*****************************************************************************************************
*
Loopback .set NO ;(digital looback mode) DLB bit
Format .set BIT_16 ;(Data format 16,12,10,8) FO bit
IntSync .set NO ;(internal Frame syncs generated) TXM bit
IntCLK .set NO ;(internal clks generated) MCM bit
BurstMode .set YES ;(if BurstMode=NO, then Continuous) FSM bit
CLKDIV .set 3 ;(3=default value, 1/4 CLOCKOUT)
PCM_Mode .set NO ;(Turn on PCM mode)
FS_polarity .set YES ;(change polarity)YES=^^^\_/^^^, NO=___/^\___
CLK_polarity .set NO ;(change polarity)for BCLKR YES=_/^, NO=~\_
Frame_ignore .set !YES ;(inverted !YES -ignores frame)
XMTautobuf .set NO ;(transmit autobuffering)
RCVautobuf .set YES ;(receive autobuffering)
XMThalt .set NO ;(transmit buff halt if XMT buff is full)
RCVhalt .set NO ;(receive buff halt if RCV buff is full)
XMTbufAddr .set 0x800 ;(address of transmit buffer)
XMTbufSize .set 0x000 ;(length of transmit buffer)
RCVbufAddr .set 0x800 ;(address of receive buffer)
RCVbufSize .set 0x800 ;(length of receive buffer)works up to 800
*
* See notes in the 'C54x CPU and Peripherals Reference Guide on setting up
* valid buffer start and length values. Page 9-44
*
*
**********************************************************************
.eval ((Loopback >> 1)|((Format & 2)<<1)|(BurstMode <<3)|(IntCLK <<4)|(IntSync <<5)) ,SPCval
.eval ((CLKDIV)|(FS_polarity <<5)|(CLK_polarity<<6)|((Format & 1)<<7)|(Frame_ignore<<8)|(PCM_Mode<<9)), SPCEval
.eval (SPCEval|(XMTautobuf<<10)|(XMThalt<<12)|(RCVautobuf<<13)|(RCVhalt<<15)), SPCEval
*
*
sineinit:
bspc = #SPCval ; places buffered serial port in reset
ifr = #10h ; clear interrupt flags
imr = #210h ; Enable HPINT,enable BRINT0
intm = 0 ; all unmasked interrupts are enabled.
bspce = #SPCEval ; programs BSPCE and ABU
axr = #XMTbufAddr ; initializes transmit buffer start address
bkx = #XMTbufSize ; initializes transmit buffer size
arr = #RCVbufAddr ; initializes receive buffer start address
bkr = #RCVbufSize ; initializes receive buffer size
bspc = #(SPCval | GO) ; bring buffered serial port out of reset
return ;for transmit and receive because GO=0xC0
; ***************************************************************************
; File: BVECTORS.ASM -> Vector Table for the 'C54x DSKplus 10.Jul.96
; BSP vectors and Debugger vectors
; TDM vectors just return
; ***************************************************************************
; The vectors in this table can be configured for processing external and
; internal software interrupts. The DSKplus debugger uses four interrupt
; vectors. These are RESET, TRAP2, INT2, and HPIINT.
; * DO NOT MODIFY THESE FOUR VECTORS IF YOU PLAN TO USE THE DEBUGGER *
;
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