Onkyo DT9904S, Service Manual

Page: 17 / 71

PIN CONFIGURATION
A0–A19 = 20 addresses
DQ0–DQ14 = 15 data inputs/outputs
DQ15/A-1 = DQ15 (data input/output, word mode),
A-1 (LSB address input, byte mode)
BYTE# = Selects 8-bit or 16-bit mode
CE# = Chip enable
OE# = Output enable
WE# = Write enable
RESET# = Hardware reset pin
RY/BY# = Ready/Busy output
(N/A SO 044)
V
CC
= 3.0 volt-only single power supply
(see Product Selector Guide for speed
options and voltage supply tolerances)
V
SS
= Device ground
NC = Pin not connected internally
LOGIC SYMBOL
20
16 or 8
DQ0–DQ15
(A-1)
A0–A19
CE#
OE#
WE#
RESET#
BYTE# RY/BY#
(N/A SO 044)
15