MTC-20172-PC AMI Semiconductor, Inc., MTC-20172-PC Datasheet - Page 69

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

Note that this list is identical to the NT
indication list, except for the "ei"
indication, which is not present here.
6.5.10 Commands and indications TE/LT-T
Table 6.6.a : MTC-20172 SIC C/I TE/LT-T
TE/
LT-T
0000
0001
0010
0011
0100
0101
0110
0111
Downstr
Indicat.
DR
- *RES
sd * TM
dis*SLIP
RSY
-
ei * -
PU
Upstr.
Command
TIM
rs=RES
ssz=TM1
-& *TM2
scz* &-
-
-
-
Remark 1: The "lsl" indication is
deleted from the basic command list
and replaced by RSYu. If the device
does not receive a valid signal, e.g.
no signal, it will go to the loss of sync
state, and it signals loss of sync.
Remark 2: The TIM indication is
used in the NT modes. However, in
the LT-S modes here it is only listed for
the extended mode. Because the
"TIM" indication is not expected from
the basic mode, it cannot be allowed
it to appear in the C/I channel in LT-S
modes of the MTC-20172 SIC. As the
GCI bus is never shut down in LT-S
modes, the timing request "TIM" is not
needed.
1000
1001
1010
1001
1100
1101
1110
1111
Downstr
Indicat.
ARd
-
ti * ARL
ati * -
AI8
AI10
- *AIL
did=DC
59
Upstr.
Command
AR8
AR10
ARL
-
-
-
-
DIu
MTC-20172
Data Sheet & Reference Manual
Rev. 1.1 February 1997
General comments:
The difference between the TE and LT-
T modes will be the absence of the
SLIP or "sd" indications. In TE the
MTC-20172 SIC generates its own
clocks.