MTC-20172-PC AMI Semiconductor, Inc., MTC-20172-PC Datasheet - Page 68

• Manufacturer Part Number: MTC-20172-PC
• Description: S Interface Circuit for ISDN (SIC)
• Manufacturer: AMI Semiconductor, Inc.

6.5.9.1 Commands (Downstream) In LT-S Mode
6.5.9.2 Indications (Upstream) In LT-S Mode
Table 6.5.b : MTC-20172 SIC commands (DS) LT-S
* Marks functional difference;
& Marks difference that can be merged.
# Unconditional commands, which
force an unambiguous state.
Table 6.5.c : MTC-20172 SIC indications (US) LT-S
* Marks functional difference;
0000
0001
0010
0011
1000
1010
1111
0000
0001
0100
0101
1000
1100
1111
DR #
*RES #
*scz #
ssz #
= TM1
*TM2 #
ARd
ARL
did=
DC
*TIM
*lsl
&
RSYu
---------
ARu
AIu
DIu
Deactivate
Request
RESET
Send Continu-
ous Zeros
TEST-MODE 1
TEST-MODE 2
Activation
Request down
Activat. req
Deactivate
Confirmation
Timing
Request
Lost Signal
Level
Resynchron-
izing
---------
Activation
Request up
Activation
Indication up
Deactivation
Indication
Remark 1: During loops the MTC-
20172 SIC simply ignores the
incoming INFO3 from the S-bus. The
receiver synchronizes on looped
INFO2/4.
& Marks difference that can be merged.
58
Forces MTC-20172 SIC to deactiv. the S-bus (=INFO0)
followed by DIu and did=DC
Forces MTC-20172 SIC to soft reset, extended mode
has "scz" meaning for basic mode
Forces MTC-20172 SIC to test-mode 2, extended mode
has RESET meaning for extended mode
Forces MTC-20172 SIC to test-mode 1, sending
single zeros
Forces MTC-20172 SIC to test-mode 2
INFO transmission, first INFO2, then
INFO4 once receiver is synchronous
INFO transmission on the S-bus
with S-loop
Deactivation confirmation, entering the
power down state, INFO0 sent
The MTC-20172 SIC requires GCI clocks and
Master clock input, extended mode only
(Extention to basic mode impossible)
No receive level, indic. Basic mode only,
indication deleted, replaced by RSYu
The S-bus receiver tries to synchronize
on incoming INFOx
---------
INFO1 received (actually any AMI signal)
Receiver synchronized on INFO2/3/4
(INFO3 normally, INFO2/4 in loop)
Timer (32 ms) expired, or INFO0 received
(16 ms) after DR (deactiv. request)
test loop2 switched (transparent loop)
Remark 2: The TM2 command
could be extended to the basic mode.
Remark 3: RES and scz commands
cannot be merged
MTC-20172
Data Sheet & Reference Manual
Rev. 1.1 February 1997