ltc1407a-1 Linear Technology Corporation, ltc1407a-1 Datasheet - Page 21

• Manufacturer Part Number: ltc1407a-1
• Description: Serial 12-bit, 3msps Simultaneous Sampling Adcs With Shutdown
• Manufacturer: Linear Technology Corporation

APPLICATIO S I FOR ATIO
**********************************************************************
*
**********************************************************************
*
* File: s2k14ini.ASM
*
*
*
**********************************************************************
ON
OFF
YES
NO
BIT_8
BIT_10
BIT_12
BIT_16
GO
**********************************************************************
* 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.
*
*****************************************************************************************************
*LTC1407 timing from board with 10MHz crystal.
*
*10MHz, divided from 40MHz, forced to CLKIN by 1407 board.
*
*Horizontal scale is 25ns/chr or 100ns period at BCLKR
*
*Timing measured at DSP pins. Jxx pin labels for jumper cable.
*
*BFSR
~~~~~~~~~~~*
*BCLKR Pin J1-14 _/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/~\_/
~\_/~\_/~*
*BDR
B12*
*CLKIN Pin J5-09 ~~~~~\_______/~~~~~~~\_______/~~~~~~~\_______/~~~~~~~\_______/
~~~~~~~\_______/~~~~~*
*C542 read
B13 B12*
*
*
* negative edge BCLKR
* negative BFSR pulse
* no data shifted
* 1' cable from counter to CONV at DUT
Pin J1-20 ~~\____/~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\____/
Pin J1-26 _—_—_—<B13-B12-B11-B10-B09-B08-B07-B06-B05-B04-B03-B02-B01-B00>—_—<B13-
(C) COPYRIGHT TEXAS INSTRUMENTS, INC. 1996
for use with 1407 in buffered mode
BSPC and SPC are the same in the ‘C542
BSPCE and SPCE seem the same in the ‘C542
.space
.title “Buffered Serial Port Initialization Routine”
.set 1
.set !ON
.set 1
.set !YES
.set 2
.set 1
.set 3
.set 0
.set 0x80
U
24*16
U
BSP initialization code for the ‘C54x DSKplus
;68-7F; reserved area
0
W
B13 B12 B11 B10 B09 B08 B07 B06 B05 B04 B03 B02 B01 B00
U
LTC1407-1/LTC1407A-1
*
*
*
*
*
*
21
0
14071fa
0