BT8370KPF

Manufacturer Part NumberBT8370KPF
DescriptionFully integrated T1/E1 framer and line interface
ManufacturerConexant Systems, Inc.
BT8370KPF datasheet
 


Specifications of BT8370KPF

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3.15 Bit-Oriented Protocol Registers
RBOP Integration—Requires receipt of two identical, consecutive 16-bit patterns (without
RBOP_INTEG
errors or gaps between patterns) to validate a single codeword. In this case, an errored
codeword does not increment the pattern count. RBOP integration must be enabled to meet
codeword detection criteria while receiving a 1E-3 bit error ratio. RBOP_INTEG adds at least
one to the number of successive 16-bit patterns needed to qualify receipt of BOP message (2 in
a row counts as 1 pattern; 11 in a row counts as 10; and 26 in a row counts as 25).
RBOP Message Length—Selects the number of successive identical 16-bit patterns needed
to qualify receipt of a single BOP message and update RBOP [addr 0A2] with the received
codeword. During this time, the RBOP interrupt [ISR1; addr 00A] is also activated. Successive
patterns can be separated by any number of bits, as long as they do not contain a different valid
codeword.
RBOP_LEN
TBOP Message Length—Selects the number of repeated 16-bit patterns sent as a single
TBOP_LEN[1:0]
message when a TBOP [addr 0A1] codeword is written. Another message with the same or
different codeword value can be written to TBOP as soon as prior message start is
acknowledged, via activation of a TBOP interrupt [ISR2; addr 009]. If no new message is
written, the FDL channel returns to TDL1 output control upon completion of message
transmission. The processor changes TBOP_LEN to end transmission of a continuously
repeating message.
TBOP_LEN
3-88
Fully Integrated T1/E1 Framer and Line Interface
0 = no integration
1 = RBOP integrationRBOP_LEN[1:0]
Successive Patterns
00
1
Single 16-bit pattern updates RBOP
01
10
Minimum command, response length
10
25
Preferred command, response length
11
Change
RBOP updates on receipt of each new
pattern
Repeated
Message
Patterns
Length (ms)
00
1
4
01
10
40
10
25
100
11
Continuous
Continuous
Conexant
Bt8370/8375/8376
Notes
Notes
Single message sends 16 FDL bits
Minimum command, response length
Preferred command
Required for ESF Yellow Alarm
N8370DSE