Data Sheet AS3588A
Rev. 3.1 Page 1 of 15 July 1999
Key Features
n 8-Line x 32 PCM Channel Inputs
n 8-Line x 32 PCM Channel Output
n 256 Ports Non Blocking Time/Space Crosspoint
Switch
n Single Power Supply of 5V
n Low Power Consumption
n Microprocessor Control Interface
n Open Drain Serial Outputs
n CMOS Process
n Simultaneous Connection/Disconnection under
Microprocessor Control
n Extraction/Insertion of Single PCM Channels
n Channel Zero Extraction
General Description
AS3588A is designed for switching PCM channels
under microprocessor control in digital exchanges,
PBX or Central Office equipment. It provides a non
blocking digital switching matrix for up to 256x256
64 kbit/sec channels.
Each of the eight serial inputs and outputs consists of
32 64 kbit/sec channels multiplexed to/from a 2048
kbit/sec serial PCM bit stream.
Simultaneously it allows its controlling microprocessor
to read PCM output channels or to write to PCM
output channels.
Ordering Information
Part Number Package
AS3588AP 40 Pin DIP
AS3588AQ 44 QFP
Block Diagramme
INP PCM0
INP PCM1
INP PCM2
INP PCM3
INP PCM4
INP PCM5
INP PCM6
INP PCM7
DATA MEMORY
256 X 8
DIN
OUT PCM0
OUT PCM1
OUT PCM2
OUT PCM3
OUT PCM4
OUT PCM5
OUT PCM6
OUT PCM7
DOUT
AD
CONNECTION
MEMORY
256 X 9
S1 A2 S2 CS1 CS2 WR RD C/D DRRES
MICROPROCESSOR INTERFACE AND CONTROL LOGIC
SYNC
CLOCKDOUT
DIN
CM
MUXAD
PARALLEL
SERIAL
TO
CONVERTER
A1 D0......D7
DM MUX
OD
MUX
SERIAL
TO
PARALLEL
CONVERTER
TIME BASE
CHANNEL 0
EXTRACTION
LOGIC
Figure 1: Block Diagramme
DIGITAL TIME/SPACE
CROSSPOINT SWITCH
Austria Mikro Systeme International AG