
XRT86SH221
PRELIMINARY
IX
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
REV. P1.0.5
F
IGURE
79. I
LLUSTRATION
OF
THE
E
GRESS
-D
IRECTION
D
ROP
P
ORT
S
IGNALS
................................................................................ 332
T
ABLE
298 T
IMING
I
NFORMATION
FOR
THE
E
GRESS
-D
IRECTION
D
ROP
P
ORT
S
IGNALS
................................................................... 332
9.0 ELECTRICAL CHARACTERISTICS.................................................................................................... 333
T
ABLE
299 A
BSOLUTE
M
AXIMUM
R
ATINGS
.................................................................................................................................... 333
T
ABLE
300: E1 R
ECEIVER
E
LECTRICAL
C
HARACTERISTICS
............................................................................................................ 334
10.0 BACKGROUND AND PROTOCOLS................................................................................................. 336
10.1 SYNCHRONOUS DIGTIAL HIERARCHY (SDH) STANDARD ..................................................................... 336
10.2 BASIC FRAME STRUCTURE........................................................................................................................ 338
F
IGURE
80. STM-N
FRAME
STRUCTURE
....................................................................................................................................... 338
11.0 REFERENCE DOCUMENTATION..................................................................................................... 340
11.1 TERMINOLOGY............................................................................................................................................. 340
11.1.1 NOMENCLATURE .................................................................................................................................................... 340
11.1.2 SIGNAL NAME PREFIXES AND SUFFIXES............................................................................................................ 340
11.1.3 ABBREVIATIONS ..................................................................................................................................................... 340
O
RDERING
I
NFORMATION
.................................................................................................................. 343
P
ACKAGE
D
IMENSIONS
388
PBGA
.............................................................................................................. 343
R
EVISIONS
................................................................................................................................................ 344