Bt8370/8375/8376
3.12 Transmitter Registers
Fully Integrated T1/E1 Framer and Line Interface
Table 3-15. E1 Transmit Framer Modes (T1/E1N = 0)
TS0 Overhead Insertion
Yellow Alarms
TFRAME
Framer Mode
MFAS
FEBE
CRC4
FAS
YEL
MYEL
00XX
01XX
10XX
11XX
FAS Only
Ones
Yes
Ones
Yes
Ones
Yes
Yes
Yes
Yes
Yes
Y0
Y0
Y0
Y0
—
—
FAS + MFAS
FAS + CAS
Ones
Yes
Ones
Yes
Ones
Yes
Y16
Y16
FAS + MFAS + CAS
Table 3-16. T1 Transmit Framer Modes (T1/E1N = 1)
F-bit Overhead Insertion
Yellow Alarms
TFRAME
Framer Mode
Fs
FPS
CRC6
Ft
YEL
MYEL
0000
0100
0101
100X
0001
FT Only
SF
Ones
Yes
Yes
Yes
—
—
—
—
—
Yes
Yes
Yes
Yes
—
YB2
YB2
YJ
—
—
—
—
SF + JYEL
SLC
—
—
—
—
YB2
YB2
(1)
ESF + No CRC
Yes
Ones
YF
(1)
1100
1101
ESF + Mimic CRC
ESF + Force CRC
—
—
Yes
Yes
Yes
Yes
—
—
YB2
YB2
YF
(1)
YF
NOTE(S):
(1)
YF Yellow Alarm is generated manually using DL1 data link controller and transmitting the appropriate BOP message.
3-68
Conexant
N8370DSE
CONEXANT [ CONEXANT SYSTEMS, INC ]
