DS3172N Maxim Integrated, DS3172N Datasheet - Page 199
![no-image](/images/no-image-200.jpg)
DS3172N
Manufacturer Part Number
DS3172N
Description
Network Controller & Processor ICs Dual DS3/E3 Single Chip Transceiver
Manufacturer
Maxim Integrated
Datasheet
1.DS3171.pdf
(234 pages)
Specifications of DS3172N
Part # Aliases
90-31720-N00
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an OOF or AIS condition is terminated, and the next E3 frame. When 1, framing errors, parity errors, and REI
errors will be counted regardless of the presence of an OOF or AIS condition.
Bits 9 to 8: Framing Error Count Control (FECC[1:0]) – These two bits control the type of framing error events
that are counted.
Bit 7: Receive Defect Indication on LOF Enable (RDILE) – When 0, an LOF condition does not affect the receive
defect indication signal (RDI). When 1, an LOF condition will cause the transmit E3 RDI bit to be set to one if
transmit automatic RDI is enabled.
Bit 6: Receive Defect Indication on LOS Disable (RDILD) – When 0, an LOS condition will cause the transmit E3
RDI bit to be set to one if transmit automatic RDI is enabled. When 1, an LOS condition does not affect the RDI
signal.
Bit 5: Receive Defect Indication on OOF Disable (RDIOD) – When 0, an OOF condition will cause the transmit
E3 RDI bit to be set to one if transmit automatic RDI is enabled. When 1, an OOF condition does not affect the RDI
signal.
Bit 4: Receive Defect Indication on AIS Disable (RDIAD) – When 0, an AIS condition will cause the transmit E3
RDI bit to be set to one if transmit automatic RDI is enabled. When 1, an AIS condition does not affect the RDI
signal.
Bit 3: Receive Overhead Masking Disable (ROMD) – When 0, the E3 overhead positions in the outgoing E3
payload will be marked as overhead by RDENn. When 1, the E3 overhead positions in the outgoing E3 payload will
be marked as data by RDENn.
Bits 2 to 1: LOF Integration Period (LIP[1:0]) – These two bits determine the OOF integration period for
declaring LOF.
Bit 0: Force Framer Resynchronization (FRSYNC) – A 0 to 1 transition forces. an OOF condition at the next
framing word check. This bit must be cleared and set to one again to force another resynchronization.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
Bits 3 to 1: Expected Payload Type (EPT[2:0]) – These three bits contain the expected value of the payload
type.
Bit 0: Timing Source Indicator Bit Extraction Disable (TIED) – When 0, the four timing source indications bits
are extracted from the last three bits of the MA byte (MA[6:8]), and stored in a register. When 1, timing source
indicator bit extraction is disabled, and the last three bits of the MA byte are integrated and stored in a register.
00 = count OOF occurrences (counted regardless of the setting of the ECC bit)..
01 = count each bit error in FA1 and FA2 (up to 16 per frame).
10 = count frame alignment word (FA1 and FA2) errors (up to one per frame).
11 = count FA1 byte errors and FA2 byte errors (up to 2 per frame).
00 = OOF is integrated for 3 ms before declaring LOF.
01 = OOF is integrated for 2 ms before declaring LOF.
10 = OOF is integrated for 1 ms before declaring LOF.
11 = LOF is declared at the same time as OOF.
15
--
--
0
7
0
14
--
--
0
6
0
E3G832.RMACR
E3 G.832 Receive MA Byte Control Register
(1,3,5,7)22h
13
--
--
0
5
0
12
--
--
0
0
4
199
EPT2
11
--
0
3
0
EPT1
10
--
0
2
0
EPT0
--
9
0
1
0
TIED
--
8
0
0
0
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