LTC1403 Linear Technology, LTC1403 Datasheet - Page 17

• Manufacturer Part Number: LTC1403
• Description: Serial 12-Bit/14-Bit/ 2.8Msps Sampling ADCs with Shutdown
• Manufacturer: Linear Technology

* 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
Format
IntSync
IntCLK
BurstMode
CLKDIV
PCM_Mode
FS_polarity
CLK_polarity
Frame_ignore
XMTautobuf
RCVautobuf
XMThalt
RCVhalt
XMTbufAddr
XMTbufSize
RCVbufAddr
RCVbufSize
*
* See notes in the 'C54x CPU and Peripherals Reference Guide on setting up
* valid buffer start and length values. Page 9-44
*
*
**********************************************************************
sineinit:
; ***************************************************************************
; File: BVECTORS.ASM -> Vector Table for the 'C54x DSKplus
;
;
; ***************************************************************************
; 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 *
.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
bspc = #SPCval
ifr = #10h
imr = #210h
intm = 0
bspce = #SPCEval
axr = #XMTbufAddr
bkx = #XMTbufSize
arr = #RCVbufAddr
bkr = #RCVbufSize
bspc = #(SPCval | GO)
return
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
.set
NO
BIT_16
NO
NO
YES
3
NO
YES
NO
!YES
NO
YES
NO
NO
0x800
0x000
0x800
0x800
BSP vectors and Debugger vectors
TDM vectors just return
; places buffered serial port in reset
; clear interrupt flags
; Enable HPINT,enable BRINT0
; all unmasked interrupts are enabled.
; programs BSPCE and ABU
; initializes transmit buffer start address
; initializes transmit buffer size
; initializes receive buffer start address
; initializes receive buffer size
; bring buffered serial port out of reset
;for transmit and receive because GO=0xC0
;(digital looback mode?)
;(Data format? 16,12,10,8)
;(internal Frame syncs generated?) TXM bit
;(internal clks generated?)
;(if BurstMode=NO, then Continuous) FSM bit
;(3=default value, 1/4 CLOCKOUT)
;(Turn on PCM mode?)
;(change polarity)YES=^^^\_/^^^, NO=___/^\___
;(change polarity)for BCLKR YES=_/^, NO=~\_
;(inverted !YES -ignores frame)
;(transmit autobuffering)
;(receive autobuffering)
;(transmit buff halt if XMT buff is full)
;(receive buff halt if RCV buff is full)
;(address of transmit buffer)
;(length of transmit buffer)
;(address of receive buffer)
;(length of receive buffer)works up to 800
10.Jul.96
DLB bit
MCM bit
FO bit
LTC1403/LTC1403A
*
*
17
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