LTC1403AIMSE#TRPBF Datasheet LTC1403CMSE#PBF, LTC1403ACMSE#PBF, LTC1403AIMSE#PBF | P16-P18

LTC1403/LTC1403A

1403fc

For more information www.linear.com/LTC1403

applications inFormation

; 01-08-01 ******************************************************************

; Files: 014SI.ASM -> 1403A Sine wave collection with Serial Port interface

; bvectors.asm buffered mode to avoid standard mode bug.

; s2k14ini.as m 2k buffer size.

; first element at 1024, last element at 1023, two middles at 2047 and 0000

; unipolar mode

; negative edge BCLKR

; negative BFSR pulse

; -0 data shifted

; 1’ cable from counter to CONV at DUT

; 2’ cable from counter to CLK at DUT

; ***************************************************************************

.widt h 160

.leng th 110

.title “sineb0 BSP in auto buffer mode”

.mmregs

.setsect “.t e x t”, 0x500,0 ;Set address of executable

.setsect “vectors”, 0x180,0 ;Set address of incoming 1403 data

.setsect “buffer”, 0x800,0 ;Set address of BSP buffer for clearing

.setsect “result”, 0x1800,0 ;Set address of result for clearing

.text ;.text marks start of code

start:

;this label seems necessary

;Make sure /PWRDWN is low at J1-9

;to turn off AC01 adc

tim=#0fh

prd=#0fh

tcr = #10h ; stop timer

tspc = #0h ; stop TDM serial port to AC01

pmst = #01a0h ; set up iptr. Processor Mode STatus register

sp = #0700h ; init stack pointer.

dp = #0 ; data page

ar2 = #1800h ; pointer to computed receive buffer.

ar3 = #0800h ; pointer to Buffered Serial Port receive buffer

ar4 = #0h ; reset record counter

call sineinit ; Double clutch the initialization to insure a proper

sinepeek:

call sineinit ; reset. The external frame sync must occur 2.5 clocks

; or more after the port comes out of reset.

wait goto wait

; ----------------Buffered Receive Interrupt Routine ------------------

breceive:

ifr = #10h ; clear interrupt flags

TC = bit f(@BSP CE,#4000h) ; check which half (bspce(bit14)) of buffer

if (NTC) goto bufull ; if this still the first half get next half

bspce = #(2023h + 08000h); turn on halt for second half (bspce(bit15))

return _ enable

; --------------mask and shift input data ----------------------------

bufull:

b = *ar3+ << -0 ; load acc b with BSP buffer and shift right -0

b = #03FFFh & b ; mask out the TRISTATE bits with #03FFFh

;

*ar2+ = d at a(#0bh) ; store B to out buffer and advance AR2 pointer

TC = (@ar2 == #02000h) ; output buffer is 2k starting at 1800h

if (TC) goto start ; restart if out buffer is at 1fffh

goto bufull

LTC1403/LTC1403A

1403fc

For more information www.linear.com/LTC1403

; -------------------dummy bsend return------------------------

bsend return _ enable ;this is also a dummy return to define bsend

;in vector table file BVECTORS.ASM

; ----------------------- end ISR ----------------------------

.copy “c:\ dskplus\1403\s2k14ini.asm” ;initialize buffered serial port

.space 16*32 ;clear a chunk at the end to mark the end

;======================================================================

;

; VECTORS

;

;======================================================================

.sect “vectors” ;The vectors start here

.copy “c:\ dskplus\1403\bvectors.asm” ;get BSP vectors

.sect “buffer” ;Set address of BSP buffer for clearing

.s p ace 16*0x800

.sect “result” ;Set address of result for clearing

.s p ace 16*0x800

.end

**********************************************************************

* (C) COPYRIGHT TEXAS INSTRUMENTS, INC. 1996 *

**********************************************************************

* *

* File: s2k 14ini.ASM BSP initialization code for the ‘C54x DSKplus *

* for use with 1403A in standard mode *

* BSPC and SPC are the same in the ‘C542 *

* BSPCE and SPCE seem the same in the ‘C542 *

**********************************************************************

.title “Buffered Serial Port Initialization Routine”

ON .set 1

OFF .set !ON

YES .set 1

NO .set !YES

BIT _ 8 .set 2

BIT _ 10 .set 1

BIT _ 12 .set 3

BIT _ 16 .set 0

GO .set 0x80

**********************************************************************

* This is an example of how to initialize the Buffered Serial Port (BSP).

* The BSP is initialized to require an external CLK and FSX for

* operation. The data format is 16-bits, burst mode, with autobuffering

* enabled.

*****************************************************************************************************

*LTC1403 timing from LCC28 socket board with 10MHz cryst al. *

*10MHz, divided from 40MHz, forced to CLKIN by 1403 board. *

*Horizontal scale is 25ns/chr or 100ns period at BCLKR . *

*Timing measured at DSP pins. Jxx pin labels for jumper cable. *

*BFSR Pin J1-20 ~~\ ____/~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\ ____/~~~~~~~~~~~*

*BCLKR Pin J1-14 _ /~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~\ _/~*

*BDR Pin J1-26 _ --- _ --- _ ---<B13-B12-B11-B10-B09-B08-B07-B06-B05-B04-B03-B02-B01-B00>--- _ ---<B13-B12*

*CLKIN Pin J5-09 ~~~~~\ _______/~~~~~~~\ _______/~~~~~~~\ _______/~~~~~~~\ _______/~~~~~~~\

_______/~~~~~*

*C542 read 0 B13 B12 B11 B10 B09 B08 B07 B06 B05 B04 B03 B02 B01 B00 0 0 B13 B12*

applications inFormation

LTC1403/LTC1403A

1403fc

For more information www.linear.com/LTC1403

applications inFormation

* *

* 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) F O b it

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)) ,S P C v a l

.eval (SPCEval|(XMTautobuf<<10)|(XMThalt<<12)|(RCVautobuf<<13)|(RCVhalt<<1 5)), S P C E v a l

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 = #X MTbufSize ; initializes transmit buffer size

arr = #RCVbufAddr ; initializes receive buffer start address

bkr = #RCVbufSize ; initializes receive buffer size

bspc = #(S P C v a l | 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.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P22

LTC1403AIMSE#TRPBF

Mfr. #:

Buy LTC1403AIMSE#TRPBF

Manufacturer:

Analog Devices Inc.

Description:

Analog to Digital Converters - ADC Serial 14-B, 2.8Msps Smpl ADCs w/ SD

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

LTC1403AIMSE#TRPBF

LTC1403AIMSE#TRPBF

Products related to this Datasheet