TXC-03305AIPQ Transwitch Corporation, TXC-03305AIPQ Datasheet - Page 80

• 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
1D
5-0
Bit
7
6
RFEACn
Symbol
(n=6-1)
NEW
FIDL
Receive Single FEAC Word: Bit 7 (FIDL) is the FEAC idle channel indica-
tion. It clears whenever a 0 C3 bit is received framing the six-bit variable
word. Bit 7 cannot be reset by a microprocessor read cycle. Bit 6 (NEW)
indicates when a new FEAC word has been detected. It clears when the
register is read. When the M13X lead is high, the NEW bit will be set under
the conditions that cause the NEW bit to be set in the M13E device.
Namely, the NEW bit becomes set when any five consecutive and identical
FEAC messages are received. The NEW bit will continually be reasserted if
it is read and cleared when a continuous constant FEAC message is
received. When the M13X lead is low, the NEW bit does not become set to
one again after it is cleared when a continuous constant FEAC message is
received. Bits 5-0 (RFEACn) constitute the variable (XXXXXX) field in the
FEAC word. A received FEAC word is stored in bits 5-0 with the first bit
received in bit 0, as shown below:
The following table lists possible FEAC combinations:
Notes:
1. There is no buffering for the received FEAC message. The latest,
validated FEAC message is stored and bit 6 (NEW) is set to 1 even if the
previous message was not read.
in this register. Also the individual line loopback activate and deactivate
codewords are not displayed in this register.
FIDL
2. Line loopback activate and deactivate FEAC codes are not displayed
1
0
1
DATA SHEET
NEW
0
1
1
Bit 7
- 80 -
0 X X X X X X
FEAC channel idle - No message received since
last read cycle
New message received - FEAC channel busy
New message received - FEAC channel idle
16-Bit FEAC Word
X X X X X X
Description
0
1 1 1 1 1 1 1 1
1DH
Status