DS2155LB Maxim Integrated, DS2155LB Datasheet - Page 67
DS2155LB
Manufacturer Part Number
DS2155LB
Description
Network Controller & Processor ICs
Manufacturer
Maxim Integrated
Datasheet
1.DS2155GNB.pdf
(238 pages)
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Part Number:
DS2155LB
Manufacturer:
DALLAS
Quantity:
20 000
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Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 0/Receive Align Frame Event (RAF) (E1 Only). Set every 250µs at the beginning of align frames. Used to
alert the host that Si and Sa bits are available in the RAF and RNAF registers.
Bit 1/Receive CRC4 Multiframe Event (RCMF) (E1 Only). Set on CRC4 multiframe boundaries; continues to
set every 2ms on an arbitrary boundary if CRC4 is disabled.
Bit 2/Receive Multiframe Event (RMF)
Bit 3/Transmit Align Frame Event (TAF) (E1 Only). Set every 250µs at the beginning of align frames. Used to
alert the host that the TAF and TNAF registers need to be updated.
Bit 4/Transmit Multiframe Event (TMF)
Bit 5/Receive Signaling All-Zeros Event (RSAZ) (E1 Only). Set when over a full MF, time slot 16 contains
all 0s.
Bit 6/Receive Signaling All-Ones Event (RSAO) (E1 Only). Set when the contents of time slot 16 contains fewer
than three 0s over 16 consecutive frames. This alarm is not disabled in the CCS signaling mode.
Bit 7/Receive AIS-CI Event (RAIS-CI) (T1 Only). Set when the receiver detects the AIS-CI pattern as defined in
ANSI T1.403.
E1 Mode: Set every 2ms (regardless if CAS signaling is enabled or not) on receive multiframe boundaries.
Used to alert the host that signaling data is available.
T1 Mode: Set every 1.5ms on D4 MF boundaries or every 3ms on ESF MF boundaries.
E1 Mode: Set every 2ms (regardless if CRC4 is enabled) on transmit multiframe boundaries. Used to alert
the host that signaling data needs to be updated.
T1 Mode: Set every 1.5ms on D4 MF boundaries or every 3ms on ESF MF boundaries.
RAIS-CI
7
0
RSAO
SR4
Status Register 4
1Ch
6
0
RSAZ
5
0
TMF
4
0
67 of 238
TAF
3
0
RMF
2
0
RCMF
1
0
RAF
0
0
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