NSAM265SR Datasheet, PDF (32/58 Pages) National Semiconductor (TI) – CompactSPEECH Digital Speech Processors

Appendix A
Device Specifications
This appendix describes the pins and signals of the
NSAM265SR and NSAM265SF CompactSPEECH proces-
sors specifies its maximum ratings and its electrical charac-
teristics and describes its timing
A 1 PIN ASSIGNMENT
The following sections list the pins of the NSAM265SR and
NSAM265SF CompactSPEECH processors They indicate
which signals use the same pin and under what conditions
each signal is enabled for that pin Slashes separate the
names of signals that share the same pin
A 1 1 Pin-Signal Assignment
Table A-1 shows all the pins and the signals that use them
in different configurations It also shows the type and direc-
tion of each signal
TABLE A-1 CompactSPEECH Pin-Signal Assignment under Different Conditions
Pin Name
A(0 15)
CAS (Note A)
CCLK
CDIN
CDOUT
CFS0
D(0 1)
D2 RA11
D(3 7)
DWE
MWCS
WR0 TST
MWDRY
MWRQST
MWDOUT
PB(0 5) (Note D)
PB6 (Note E)
EMCS ENV0
MWCLK
MWDIN
RAS (Note A)
RESET
V_CC
V_SS
X1
X2 CLKIN
Type
TTL
TTL1 (Note B)
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL1 (Note B)
TTL (Note C)
TTL
TTL
TTL
TTL
TTL
TTL
TTL1 (Note B)
CMOS (Note F)
TTL
TTL
TTL1 (Note B)
Schmitt (Note C)
Power
Power
XTAL
XTAL
TTL
Signal Name
A(0 15)
CAS
CCLK
CDIN
CDOUT
CFS0
D(0 1)
D2 RA11
D(3 7)
DWE
MWCS
WR0
TST
MWDRY
MWRQST
MWDOUT
EA(16 21)
AFLASH OE
EMCS
ENV0
MWCLK
MWDIN
RAS
RESET
V_CC
V_SS
X1
X2
CLKIN
IO
Output
Output
Output
Input
Output
Output
IO
IO
IO
Output
Input
Output
Input
IO
IO
Output
Output
Output
Output
Input
Input
Input
Output
Input
OSC
OSC
Input
Note A Used in NSAM265SR only N C in NSAM265SF
Note B TTL1 output signals provide CMOS levels in the steady state for small loads
Note C Schmitt trigger input
Note D NSAM265SR and NSAM265SF virtual address lines for IVS ROM
NSAM265SF only virtual address lines for FLASH
Note E Used in NSAM265SF only enables disable FLASH
Note F Input during reset CMOS level input
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