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XRT72L50
SINGLE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
PRELIMINARY
REV. P1.1.3
408
tion of the Local Transmit E3 Framer block, which will
transmit an E3 frame to the Remote Terminal, with
the FEBE bit-field set to “0” . This signaling indicates
that the Local Receive E3 Framer has received an er-
ror-free E3 frame.
F
IGURE
196. I
LLUSTRATION
OF
THE
L
OCAL
R
ECEIVE
E3 F
RAMER
BLOCK
,
RECEIVING
AN
E3 F
RAME
(
FROM
THE
R
EMOTE
T
ERMINAL
)
WITH
A
CORRECT
EM B
YTE
.
Transmit E3
Framer
Receive E3
Framer
Local Terminal
Remote
Terminal
EM Byte
Locally Calculated
EM Byte
0x5A
0x5A
F
IGURE
197. I
LLUSTRATION
OF
THE
L
OCAL
R
ECEIVE
E3 F
RAMER
BLOCK
,
TRANSMITTING
AN
E3 F
RAME
(
TO
THE
R
EMOTE
T
ERMINAL
)
WITH
THE
FEBE
BIT
(
WITHIN
THE
MA
BYTE
-
FIELD
)
SET
TO
“0”
Transmit E3
Framer
Receive E3
Framer
Local Terminal
Remote
Terminal
MA Byte
x0xxxxxx
FEBE bit