TXC-03305AIPQ Transwitch Corporation, TXC-03305AIPQ Datasheet - Page 84

• Manufacturer Part Number: TXC-03305AIPQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-03305AIPQ

• Lead Free Status / RoHS Status: Not Compliant

TXC-03305-MB
Ed. 4, September 2000
M13X
TXC-03305
Address
(cont.)
21
22
23
7-0
7-0
Bit
1
0
Symbol
T3AIS1
T3AIS0
(n=7-0)
(n=7-0)
C1BZn
MEn
Transmit DS3 AIS Selection: A DS3 AIS may be generated in one of four
ways. The following table selects the DS3 AIS generation mechanism:
C1 Bit Zero Counter: A saturating counter that counts the number of C1
bits equal to 0 in both the C-bit parity mode and M13 format mode since the
counter was last read. In the M13 format mode the contents of this counter
should be disregarded. The counter is inhibited when DS3 loss of signal or
out of frame occurs. The counter is cleared when it is read by the micropro-
cessor. When lead M13X is low, this counter is 16 bits wide and this
address contains the low byte of that counter. The high byte of the counter
is written to the CR register (3EH) when this register is read. When lead
M13X is high, this counter is 8 bits wide.
DS3 M-bits in Error Counter: A saturating counter that counts the number
of M-bits that are in error since the counter was last read. The counter is
inhibited when DS3 loss of signal or out of frame occurs. The counter is
cleared when it is read by the microprocessor. When lead M13X is low, this
counter is 16 bits wide and this address contains the low byte of the
counter. The high byte of this counter is written to the CR register (3EH)
when this register is read. When lead M13X is high, this counter is 8 bits
wide.
Note: These bits must be set to 0 when transmitting DS3 idle (see T3IDL
T3AIS1
0
0
1
1
in register 01H).
DATA SHEET
T3AIS0
- 84 -
0
1
0
1
Transmit DS3 AIS Selection
ANSI defined AIS generation
Note: A 1 must be written to bit 0 of register
Framed all ones and C-bits set to 1
Unframed 1010 pattern
Unframed all ones pattern
Description
01H to set the transmitted DS3 X-bits
to 1.