BT8370KPF

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


Specifications of BT8370KPF

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Error Interrupt Status

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3.0 Registers
3.4 Interrupt Status Registers
006— Error Interrupt Status (ISR5)
All events in ISR5 are from rising edge sources. Each event is latched active-high and held according to the
LATCH_ERR bit [addr 046] and triggers an interrupt if the corresponding IER5 bit is enabled [addr 00E].
7
6
5
TSLIP
RSLIP
CKERR
Transmit Slip Error—Two types of TSLIP buffer errors are reported, TFSLIP or TUSLIP. The
TSLIP
error type is reported separately in slip status [SSTAT; 0D9].
Receive Slip Error—Two types of RSLIP buffer errors are reported, RFSLIP or RUSLIP. The
RSLIP
error type is reported separately in slip status [SSTAT; 0D9].
CLAD Phase Detector or JCLK Acceleration Error—Reports JCLK acceleration/deceleration
CKERR
(enabled by JAUTO bit; addr 002).
CKERR
X
0
1
Jitter Attenuator Elastic Store Limit Error—Indicates the transmit (TJAT) or receive (RJAT)
JERR
jitter attenuator elastic store has under-run or overflowed its programmed depth [JSIZE;
addr 002]. Error type is reported separately in JMPTY [addr 021]. JAT elastic store is
automatically re-centered each time JERR occurs, causing an uncontrolled data slip on the
elastic store output.
CRC6/CRC4 Block Error—Applicable to ESF and MFAS modes only; read 0 in other modes.
CERR
CERR indicates 1 or more bit errors found in the received CRC-6 or CRC-4 checksum block
pattern.
CAS Pattern Error—Applicable only in E1 mode; read 0 in T1 mode. SERR indicates 1 or
SERR
more bit errors found in received TS16 Multiframe Alignment Signal (MAS).
MFAS Pattern Error—Applicable only in E1 mode; read 0 in T1 mode. Indicates 1 or more bit
MERR
errors found in received MFAS alignment pattern.
Frame Error—Ft/Fs/T1DM/FPS/FAS Pattern Error. Indicates 1 or more Ft/Fs/FPS frame bit
FERR
errors or FAS pattern errors found. Refer to
frame bits are monitored according to the selected receive framer mode.
3-18
Fully Integrated T1/E1 Framer and Line Interface
4
3
JERR
CERR
0 = no error
1 = TSLIP error
0 = no error
1 = RSLIP error
JAUTO
JCLK Acceleration
0
CKERR disabled
1
No error
1
JCLK acceleration active
0 = no error
1 = uncontrolled JAT data slip
0 = no error
1 = CRC error
0 = no error
1 = CAS error
0 = no error
1 = MFAS error
Table A-1
through
0 = no error
1 = frame error
Conexant
Bt8370/8375/8376
2
1
0
SERR
MERR
FERR
A-7
for a description of which
N8370DSE