txc-03456 TranSwitch Corporation, txc-03456 Datasheet - Page 14

• Manufacturer Part Number: txc-03456
• Description: Device Level Mapper
• Manufacturer: TranSwitch Corporation

RECEIVE AND TRANSMIT ALARM INDICATION PORT
BOUNDARY SCAN
Symbol
Symbol
RAIPD
TAIPD
TAIPC
TAIPF
TDO
TMS
TCK
TRS
TDI
Pin No.
Pin No.
101
103
102
96
99
98
90
12
7
3-state
I/O/P
I/O/P
O
O
I
I
I
I
I
I
I
TTL4mA
TTL4mA
TTLp
TTLp
TTLp
Type
Type
TTL
TTL
TTL
TTL
Receive Alarm Indication Port Data: A serial output that pro-
vides the four-bit FEBE count (received B3 BIP-8 parity errors,
bits 1-4), and Path RDI alarm indication (bit 5) for ring opera-
tion. Bits 6, 7, and 8 are set to 0, 0, 1, respectively. This lead is
normally connected to the TAIPD lead at the mate 140 Mbit/s
Mapper for ring operation. The RPOHC signal is used to clock
out this signal. The RPOHF signal is used to provide the frame
reference signal. The data output is disabled (forced to 0) when
an active low is placed on the POHDIS lead.
Transmit Alarm Indication Port Data: This serial input lead is
normally connected to the RAIPD lead at the mate L4M for ring
operation. Provides an input for the four-bit FEBE count
(received B3 BIP-8 parity errors), and Path RDI alarm indication
from the mate L4M. The data input is disabled when an active
low is placed on the POHDIS lead.
Transmit Alarm Indication Port Clock: This clock input is nor-
mally connected to the RPOHC clock lead at the mate L4M for
ring operation. Transmit alarm data (TAIPD) is clocked into the
L4M on positive transitions of the clock. This clock input is mon-
itored for loss of clock.
Transmit Alarm Indication Port Framing Pulse: Normally
connected to RPOHF lead at the mate L4M for ring operation.
Used to indicate the start of the external alarm indications for
ring operation.
Test Boundary Scan Clock: The input clock for boundary
scan testing. The TDI and TMS states are clocked in on positive
transitions.
Test Boundary Data Input: Serial data input for boundary
scan test messages.
Test Boundary Data Output: Serial data output whose infor-
mation is clocked out on negative transitions of TCK. This pin
requires a 4.7 k
Test Boundary Mode Select: The signal present on this lead
is used to control test operations.
Test Boundary Scan Reset: An active low asynchronous reset
signal. This lead should be held low if the boundary scan is not
being used.
DATA SHEET
- 14 -
pull-up resistor if it is used.
Name/Function
Name/Function
Ed. 1A, January 2000
TXC-03456
TXC-03456-MB
L4M