peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 86

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

Semiconductor Group
In order to avoid such a locking situation the time
has to be greater then the maximum delay
plus the delay
See the following diagram:
Figure 2-21
2.1.2.5.4
When D-channel multiplexing is used on a S
selector of the arbiter is used.
The arbiter state machine can be disabled because the QUAT-S offers a self arbitration
mechanism between several S
OR connection between the different E-channels. As a result, the arbitration function
HDLC Frame
From Terminal
At the Arbiter
Control Channel
Passes
D-Channel Arbiter States
Note: If the full selection counter value (AMO : FCC4...0) is not changed from its reset value 00 ,
– For the QUAT-S a value of 0 is recommended for the suspend counter (register
SCV). For the OCTAT-P it is recommended to programSCV = 1 in the case of 2
terminals
SCV = 0 if one terminal is used.
then the D-channel arbiter (ASM) skips the state "Limited Selection".
"Available"
"Blocked"
FS = Full Selection
LS = Limited Selection
RF = Receive Frame
EF = Expect Frame
D-Channel Arbiter Co-operating with QUAT-S Circuits
t
DCDU
1. Frame
.
End
t
DCDU
RF
Start
0
-buses. This feature is implemented by building a wired
t
t
t
t
DFS
DFS
DCDU
CCDD
t
LS
DFS
min.
2. Frame
FS
= Delay for Switch to "Full Selection" (Value in AMO)
= Min. Delay for not Locking Condition I
= D-Channel Delay Upstream
= Control Channel Delay Downstream
t
CCDD
2-40
t
CCDD
t
t
DFS min.
CCDD
Abort
0
-bus line card, only the transmit channel
EF + RF
(for the case “available” → “blocked”)
t
Start
DFS
t
DCDU
min. (value in the AMO-register)
Functional Block Description
2. Frame
t
LS
DFS
H
t
CCDD
FS + EF
t
CCDD
Abort
PEB 20560
Start
ITD05842
2003-08