Datasheet

www.ti.com Parallel Control
4 Parallel Control
Samtec part numbers SSW-110-22-S-D-VS and TSM-110-01-T-DV provide a convenient, 10-pin, dual-row
header/socket combination at J1. This header/socket provides access to the digital control pins of the
EVM. Consult Samtec at http://www.samtec.com or call 1-800-SAMTEC-9 for a variety of mating
connector options.
Table 2 describes the parallel interface pins.
Table 2. J2: Parallel Interface Pins
Pin Number Signal Description
DSP Chip Enable Strobe: Signal is driven
low by the DSP each time a parallel bus
J2.1 CE
write or read occurs and is driven high once
it completes
DSP Write Strobe: Signal is cycled low to
J2.3 WE high within the CE strobe when a parallel
bus write occurs
DSP Read Strobe: Signal is cycled low to
J2.5 RE high within the CE strobe when a parallel
bus read occurs
DSP Address line 0: Used in conjunction
J2.7 EVM_A0 with U8 to control LATCH, R/W, CLR and
RST signals
DSP Address line 1: Used in conjunction
J2.9 EVM_A1 with U8 to control LATCH, R/W, CLR and
RST signals
DSP Address line 2: Used in conjunction
J2.11 EVM_A2
with U8 to control DC_CS and LDAC
DSP Address line 3: Used in conjunction
J2.13 EVM_A3
with U8 to control DC_CS and LDAC
J2.15 Unused —
J2.17 Unused —
DSP Interrupt Input: Connects to BUSY
J2.19 INT
output of the DAC8728
5
SBAU161–February 2010 DAC8728EVM
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