3 connections between the dsp and the evm – Texas Instruments TLV1562 User Manual
Page 13
Operational Overview
7
Interfacing the TLV1562 Parallel ADC to the TMS320C54x DSP
3.3
Connections Between the DSP and the EVM
The following connections provide the interface between the DSP and the EVM:
Table 1. Signal Connections
DSP Signal
Connector/Pin on the DSKplus cir-
cuit board
Connector/Pin on
the TLV1562EVM
ADC Signal
General
GND
Connector JP4: Pin 1, 10, 11, 12, 14,
15, 19, 20, 21, 27, 34, 35
Connector JP5: Pin 6, 10, 11, 12
J10/2,J10/4,...,J10/34
J11/4,J11/6,...,J11/26
GND
VCC
JP1/32
N/A
VCC
Parallel Interface
CLKOUT
JP3/2
J11/11
CLKIN
INT0
JP5/1
J11/5
INT
XF
JP4/8
J11/3
RD
R/W
JP4/30
J11/9
decoded to the WR line
IOSTRB
JP4/36
J11/7
decoded to the WR line
A0
JP5/34
J11/2
addr. decoder for CS and CSTART
A1
JP5/35
J11/1
addr. decoder for CS and CSTART
D0
JP3/35
J10/13
D0
D1
JP3/34
J10/15
D1
D2
JP3/8
J10/17
D2
D3
JP3/12
J10/19
D3
D4
JP3/11
J10/21
D4
D5
JP3/15
J10/23
D5
D6
JP3/14
J10/25
D6
D7
JP3/18
J10/27
D7
D8
JP3/17
J10/29
D8
D9
JP3/21
J10/31
D9
Serial Interface to the DAC TLC5618A
BCLKR
JP1/14
J11/25
SCLK
BCLKX
JP1/17
J11/23
SCLK
BFSR
JP1/20
J11/21
CS
BFSX
JP1/23
J11/19
CS
BDR
JP1/26
J11/17
DIN
BDX
JP1/29
J11/15
DIN
Signals D[9–0] of the TLV1562 and D[9–0] of the DSP are tied together in this
application to simplify hardware debugging during the development phase.
However, if the 2s complement feature of the DAC is to be used, it is easier to
connect D[15-6] of the DSP with D[9–0] of the ADC. A simple right shift of the
result then evaluates the result when sign extension mode (SXM) is enabled.