Extended PCM Interface Controller (EPIC
廬
-1)
PEB 2055
General Description
Information from subscriber lines needs to be transferred to
time-slots on system internal PCM communication highways.
The EPIC-1 concentrates the circuitry necessary to do this
interfacing for a large number of transmission lines on a
single IC. Therefore, it is not necessary to repeat this PCM
interface circuitry for every line. Since the system cost of the
EPIC-1 is divided by the number of lines it controls, powerful
and comfortable functions can be economically performed.
Features
鈥?PCM interface controller for up to 32 ISDN or 64 analog
subscribers
鈥?Time-slot assignment freely programmable for all
subscribers
鈥?Non-blocking switch for 128 channels
鈥?Switching of 16-, 32-, 64-kbit/s channels (128 kbit/s via two
consecutive 64 kbit/s channels)
鈥?Two serial interfaces: PCM and configurable (IOM-2,
IOM-1, SLD, PCM).
Type
PEB 2055-N
PEF 2055-N
Package
P-LCC-44-1 (SMD)
P-LCC-44-1 (SMD)
鈥?Interfacing with four full-duplex PCM highways (up to
8 Mbit/s)
鈥?Data rates of PCM and configurable interfaces
independent of each other
鈥?Change detection (鈥渓ast look鈥? logic for C/l or signaling
channels
鈥?16-byte FIFO for monitor or feature control channels
鈥?Standard
碌
P interface with multiplexed or demultiplexed
address/data bus or separate address and data busses
鈥?Advanced low power CMOS technology
鈥?Also available with extended temperature
range 鈥?40 to 85
擄
C (PEF 2055-N)
RES
DCL / SCLK
FSC / DIR
Timing
PDC
PFS
DD0 / SIP0
DU0 / SIP4
DD1 / SIP1
DU1 / SIP5
DD2 / SIP2
DU2 / SIP6
DD3 / SIP3
DU3 / SIP7
Configurable
Interface
Data
Memory
PCM
Inter-
face
RxD 0
TxD 0
TSC 0
RxD 1
TxD 1
TSC 1
RxD 2
TxD 2
TSC 2
RxD 3
TxD 3
TSC 3
Control
Memory
Layer-1
Controller
Buffer
碌P
Interface
Block Diagram
AD0-AD7 WR RD CS ALE INT
1
ITB00687
Siemens Aktiengesellschaft
1
