
1-2
1—HARDWARE
ISD-SR3000
Voice Solutions in Silicon
1.
2.
3.
TTL1 output signals provide CMOS levels in the steady state, forsmall loads.
Input durng reset. CMOS level input.
Schmitt trggerinput.
Table 1-1: ISD-SR3000 Pin Signal Assignment
Pin Name
Signal Name
Type
Description
A(0:15)
CCLK
BMCS
BMCS/
ENV1
CDIN
CDOUT
CFS0
CFS1
D(0:7)
EMCS/
ENV0
EMCS/
ENV0
MWCLK
MWCS
MWDIN
MWDOUT
MWRDY
MWRQST
RESET
TST
V
CC
V
CC
A
V
CC
HI
A(0:16)
CCLK
BMCS
BMCS
Output
I/O
Output
I/O
Address bits 0 through 16
Codec Master/slave Clock
Base memory chip select
Base memory chip select
Environment Select
Data Input from Codec
Data Output to Codec
Codec 0 Frame Synchronization
Codec 1 Frame Synchronization
Data bits 0 through 7
Expansion Memory Chip Select
CDIN
CDOUT
CFS0
CFS1
D(0:7)
EMCS
Input
Output
I/O
Output
I/O
Output
2
ENV0
Input
1
Environment Select
MWCLK
MWCS
MWDIN
MWDOUT
MWRDY
MWRQST
RESET
TST
V
CC
V
CC
A
V
CC
HI
Input
3
Input
3
Input
3
Output
Output
Output
Input
3
Input
Power
Power
Power
MICROWIRE Clock
MICROWIRE Chip Select
MICROWIRE Data Input
MICROWIRE DATA Output
MICROWIRE Ready
MICROWIRE Request Signal
Reset
Test pin
3.3 V power supply pin
3.3 V analog circuitry power supply pin
5 V power supply pin. Connect to V
CC
if 3.3 V power supply
is used.
Ground for on-chip logic and output drivers
Ground for on-chip analog circuitry
Crystal Oscillator Interface
Crystal Oscillator Interface
V
SS
V
SS
A
X1
X2/CLKIN
V
SS
V
SS
A
X1
X2
Power
Power
Oscillator
Oscillator