DS3163 Maxim Integrated Products, DS3163 Datasheet - Page 116
DS3163
Manufacturer Part Number
DS3163
Description
IC TRPL ATM/PACKET PHY 400-PBGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS3163.pdf
(384 pages)
Specifications of DS3163
Applications
*
Mounting Type
Surface Mount
Package / Case
400-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Table 10-16
Table 10-16. Line AIS Enable Modes
Table 10-17
Table 10-17. Payload (downstream) AIS Enable Modes
10.5.4 Loop Timing Mode
Loop timing mode is enabled by setting the PORT.CR3.LOOPT bit. This mode replaces the clock from the TCLKIn
pin with the internal receive clock from the RLCLKn pin. The loop timing mode can be activated in any framing or
line interface mode.
10.5.5 HDLC Overhead Controller
There is a single HDLC controller for use in line maintenance protocols. The DS3, E3 and PLCP framers share the
same HDLC controller. Since the PLCP and DS3 or E3 framers can potentially use the HDLC controller at the
same time, there is a select bit in the port control register to chose which one uses the HDLC controller
(PORT.CR1.HDSEL). The port that does not get access to the HDLC controller will transmit all ones in the
overhead bits that the HDLC controller would connect to. The external overhead ports can be used to connect to
an external HDLC controller if both framers need the function.
The data signal to the receive HDLC controller will be forced to a one while still being clocked when the framer
(DS3, E3, or PLCP), to which the HDLC is connected, detects LOF or AIS. Forcing the data signal to all ones will
cause an HDLC packet abort if the data started to look like a packet instead of allowing a bad, and possibly very
long, HDLC packet.
PORT.CR1
PORT.CR1
PAIS[2:0]
LAIS[1:0]
000
001
010
011
100
101
110
111
00
00
00
01
10
10
11
lists the LAIS decodes for various line AIS enable modes.
lists the PAIS decodes for various payload AIS enable modes.
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
E3 or Clear Channel
Clear Channel
Frame Mode
DS3
DS3
Any
Any
E3
When AIS is sent
Automatic AIS when DLB is enabled (PORT.CR4.LBM = 1XX)
Automatic AIS when DLB is enabled
Automatic AIS when DLB is enabled
Send UA1
Send AIS
Send AIS
Disable
AIS Code
none
UA1
UA1
UA1
UA1
UA1
UA1
UA1
Description
AIS Code
DS3AIS
DS3AIS
none
UA1
UA1
UA1
UA1
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