XRT79L71_1 Datasheet, PDF (240/434 Pages) Exar Corporation – 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC -

XRT79L71
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - REGISTER/MAP DESCRIPTION
REV. 1.0.0
BIT NUMBERS
NAME
2-1
Cell Delineation Sta-
tus[1:0]
TYPE
R/O
DESCRIPTION
Cell Delineation Status[1:0]:
These two READ-ONLY bit-fields indicate the current state
(within the Cell Delineation State Machine) that the Receive ATM
Cell Processor block is currently operating in. The relationship
between the contents of these bit-fields and the corresponding
Cell Delineation State Machine state that the Receive ATM Cell
Processor block is operating in, is tabulated below.
Cell Delineation
Status[1:0]
00
01
10
11
State of Receive ATM
Cell Processor Block
SYNC State
PRE-SYNC State
Not Valid
HUNT State
0
LCD Defect Declared
R/O LCD (Loss of Cell Delineation) Defect Declared:
This READ-ONLY bit-field indicates whether or not the Receive
ATM Cell Processor block is currently declaring the LCD defect
condition. The Receive ATM Cell Processor block will declare
the LCD defect condition anytime that the Receive ATM Cell Pro-
cessor block is NOT operating in the SYNC State, within the Cell
Delineation State Machine.
0 - Indicates that the Receive ATM Cell Processor block is NOT
declaring the LCD Defect Condition.
1 - Indicates that the Receive ATM Cell Processor block is cur-
rently declaring the LCD Defect Condition.
Receive ATM Cell Processor Block - Receive ATM Interrupt Status Register - Byte 1 (Address = 0x170A)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unused
Receive Cel Extraction
Interrupt Status
R/O
R/O
R/O
R/O
R/O
R/O
R/O
RUR
0
0
0
0
0
0
0
0
BIT NUMBER
NAME
7-1
Unused
TYPE
R/O
DESCRIPTION
231