STLC5465B datasheet(32/101 Pages) STMICROELECTRONICS

32 / 101 page

in 16 GCI channels.

The contents of B1 and/or B2 can be descram-

bled or not. If descrambled the 32 B1/B2 belong

to GCI channels mandatory.

Receiving six bit word (A, E, S1, S2, S3, S4) from

any 16 “ISDN channels”, TDM side. The 16 “six

bit word” are stored automatically in the external

shared memory.

Transmitting the contents of Monitor and Com-

mand / Indicate channels to 16 GCI channels.

See SBV bit of General Configuration Register

GCR (02)H on page 68.

Alarm Indication Signal.

This detection concerns 16 hyperchannels. One

hyperchannel comprises 16 bits (B1 and B2 only).

The Alarm Indicationsfor the 16 hyperchannelsare

stored automatically in the external shared mem-

ory. See AISD bit of SwitchingMatrix Configuration

Reg SMCR (0C)H on page 71.

TDM side

PCM at 2 Mb/s

m: ISDN channel

number, 0 to 9

If TDM at 4 Mb/s

odd timeslot

or even timeslot

can be selected

GCI side

n: GCI channel

number, 0 to 7

SCRAMBLER /

DESCRAMBLER

SCRAMBLER /

DESCRAMBLER

Six bit word

Primitive

Command Indicate controllers

Monitor controllers

C/I interrupt

Queue located in

shared memory

Microprocessor

MON interrupt

Queue located in

shared memory

TS4n+3

TS4n+2

TS4n+1

TS4n

TS3m+1

TS3m

TS3m+2

Figure 15: GCI channel to/from ISDN Channel

III - FUNCTIONAL DESCRIPTION (continued)

STLC5465B

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