DS3170 Maxim Integrated Products, DS3170 Datasheet - Page 134

• Manufacturer Part Number: DS3170
• Description: Network Controller & Processor ICs DS3-E3 Single-Chip T ransceiver T3-E3 Fra
• Manufacturer: Maxim Integrated Products

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
Bits 14 to 12: Payload AIS Select [2:0] (PAIS[2:0]). This bit controls when an unframed all ones signal is forced
on the receive data path after the receive framer and payload loopback mux. Default: Payload AIS always sent.
Bits 11 to 10: Line AIS Select [1:0] (LAIS[1:0). These bits control when a DS3 framed AIS or an unframed all
ones signal is to be transmitted on TPOS/TNEG and/or TXP/TXN. The signal on TPOS/TNEG can be AMI or
unipolar. This signal is sent even when in diagnostic loopback and always over-rides signals from the framers.
Default: AIS sent if DLB is enabled.
Bit 9: BERT Enable (BENA). This bit is used to enable the transmit BERT logic; the receive BERT is always
enabled. The BERT pattern will replace the the system interface datastream (TSER) into the payload datastream.
PORT.CR1
PORT.CR1
PAIS[2:0]
LAIS[1:0]
000
001
010
011
100
101
110
111
00
00
01
10
10
11
0 = Tranmit BERT logic disabled and powered down
RESERVED
TMEI
15
Always
When LLB (no DLB) active
When PLB active
When LLB(no DLB) or PLB active
When LOS (no DLB) active
When OOF active
When OOF, LOS. LLB (no DLB), or
PLB active
Never
0
7
0
FRAME MODE
DS3
DS3
Any
Any
E3
E3
WHEN AIS IS SENT
PAIS2
MEIM
14
0
6
0
PORT.CR1
Port Control Register 1
040h
Automatic AIS when DLB is enabled
Automatic AIS when DLB is enabled
PAIS1
13
--
--
0
5
(PORT.CR4
DESCRIPTION
Send UA1
134 of 230
Send AIS
Send AIS
PMUM
PAIS0
Disable
12
0
4
0
AIS CODE
.LBM = 1XX)
none
UA1
UA1
UA1
UA1
UA1
UA1
UA1
LAIS1
PMU
11
0
3
0
DS3170 DS3/E3 Single-Chip Transceiver
LAIS0
PD
10
AIS CODE
0
2
1
DS3AIS
DS3AIS
none
UA1
UA1
UA1
RSTDP
BENA
9
0
1
1
RESERVED
RST
8
0
0
0