BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 208
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BT8375
Manufacturer Part Number
BT8375
Description
single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8375.pdf
(323 pages)
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3.15 Bit-Oriented Protocol Registers
RBOP_LOST
RBOP_VALID
RBOP[5]
RBOP[4]
RBOP[3]
RBOP[2]
RBOP[1]
RBOP[0]
Real-time status of the BOP transmitter and receiver are reported primarily for diagnostic purposes.
TBOP_ACTIVE
RBOP_ACTIVE
3-90
0A2—Receive BOP Codeword (RBOP)
0A3—BOP Status (BOP_STAT)
TBOP_ACTIVE
RBOP_LOST
7
7
RBOP_ACTIVE
RBOP_VALID
Previous Message Overwritten—Activated when RBOP is updated and RBOP_VALID is
already set, indicating the previous codeword was never read by the processor.
RBOP Message Valid—Set each time RBOP[5:0] is updated with a codeword value. Reading
from RBOP clears RBOP_VALID.
Sixth bit received
Fifth bit received
Fourth bit received
Third bit received
Second bit received
Receive BOP codeword, first bit received
TBOP Active—Remains set for the entire length of a message as defined by TBOP_LEN[1:0]
[addr 0A0].
RBOP Active—If RBOP_LEN [addr 0A0] is programmed to 10 or 25, RBOP_ACTIVE is set
at the end of the first pattern and held active until the desired number of patterns is detected.
The RBOP interrupt is then generated. RBOP_ACTIVE does not toggle when RBOP_LEN is
programmed to 1.
6
6
RBOP[5]
—
5
5
0 = no error
1 = prior codeword lost
0 = no message or message read
1 = new RBOP message received
RBOP[4]
—
4
4
Conexant
RBOP[3]
—
3
3
Fully Integrated T1/E1 Framer and Line Interface
RBOP[2]
—
2
2
RBOP[1]
—
Bt8370/8375/8376
1
1
N8370DSE
RBOP[0]
—
0
0
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