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DS26401 Datasheet(PDF) 180 Page - Dallas Semiconductor

Part # DS26401
Description  Octal T1/E1/J1 Framer
PDF  309 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS26401 Datasheet(HTML) 180 Page - Dallas Semiconductor

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DS26401 Octal T1/E1/J1 Framer
180
10.8.4 E-Bit Counter (EBCR)
This counter is only available in E1 mode. E–bit Count Register 1 (EBCR1) is the most significant word and EBCR2
is the least significant word of a 16-bit counter that records Far End Block Errors (FEBE) as reported in the first bit
of frames 13 and 15 on E1 lines running with CRC4 multiframe. These count registers will increment once each
time the received E-bit is set to zero. Since the maximum E-bit count in a one second period is 1000, this counter
cannot saturate. The counter is disabled during loss of sync at either the FAS or CRC4 level; it will continue to count
if loss of multiframe sync occurs at the CAS level.
Register Name:
EBCR1
Register Description:
E–Bit Count Register 1
Register Address:
056h + (200h x n) : where n = 0 to 7, for Ports 1 to 8
Bit #
7
6
5
4
3
2
1
0
Name
EB15
EB14
EB13
EB12
EB11
EB10
EB9
EB8
Default
0
0
0
0
0
0
0
0
Bits 0 to 7 / E-Bit Counter Bits 8 to 15 (EB8 to EB15).
EB15 is the MSB of the 16-bit E-Bit count.
Register Name:
EBCR2
Register Description:
E–Bit Count Register 2
Register Address:
057h + (200h x n) : where n = 0 to 7, for Ports 1 to 8
Bit #
7
6
5
4
3
2
1
0
Name
EB7
EB6
EB5
EB4
EB3
EB2
EB1
EB0
Default
0
0
0
0
0
0
0
0
Bits 0 to 7 / E-Bit Counter Bits 0 to 7 (EB0 to EB7).
EB0 is the LSB of the 16-bit E-Bit count.



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