Texas Instruments TLV1562 manual Connections Between the DSP and the EVM, Signal Connections

Operational Overview

3.3Connections 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-		Connector/Pin on	ADC Signal
	cuit board		the TLV1562EVM
General
GND	Connector JP4: Pin 1, 10, 11, 12, 14,		J10/2,J10/4,...,J10/34	GND
	15, 19, 20, 21, 27, 34, 35		J11/4,J11/6,...,J11/26
	Connector JP5: Pin 6, 10, 11, 12
VCC	JP1/32		N/A	VCC
Parallel Interface
CLKOUT	JP3/2		J11/11	CLKIN
	JP5/1		J11/5
INT0				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.

Interfacing the TLV1562 Parallel ADC to the TMS320C54x DSP 7