peb3456 Infineon Technologies Corporation, peb3456 Datasheet - Page 61

• Manufacturer Part Number: peb3456
• Description: Channelized T3 Termination With Ds3 Framer, M13 Multiplexer, T1/ E1 Framers And 256 Channel Hdlc/ppp Controller
• Manufacturer: Infineon Technologies Corporation

branches to a new descriptor it reads the link and packet information entirely and stores
it in its on-chip channel database.
Table 4-1
HOLD
Data Sheet
DWORD
DWORD
ADDR.
ADDR.
0C
0C
00
04
08
00
04
08
H
H
H
H
H
H
H
H
FE
31
15
0 HOLD RHI
Receive Descriptor Structure
Hold indication
HOLD indicates that a descriptor is the last element of a linked list
containing valid information.
0
1
Note: When repolling a descriptor the TE3-CHATT checks the HOLD
30
14
C
29
13
0
Next descriptor is available in the shared memory. After checking
the HOLD bit the data management unit branches to the next
receive descriptor.
This descriptor is the last one that is available for a channel. This
means that the data section where this descriptor points to is the
last data section which is available for data storage. After
processing of descriptor has finished, the data management unit
repolls the descriptor one time to check if HOLD has already
been cleared. If HOLD is still set the corresponding receive
channel is deactivated as long as the system CPU does not
request a new activation via a ’Receive Hold Reset’ command or
forces the TE3-CHATT to branch to a new linked list via a
’Receive Abort/Branch’ command.
bit and the bit field NextReceiveDescriptorPointer. All other
information are NOT updated in the internal channel database.
28
12
OFFSET(2:0)
0
NextReceiveDescriptorPointer(31:2)
27
11
0
ReceiveDataPointer(31:2)
NextReceiveDescriptorPointer(31:2)
26
10
0
ReceiveDataPointer(31:2)
25
0
0
9
61
BNO(15:0)
NO(15:0)
24
0
0
8
23
0
0
7
22
0
0
6
21
0
5
Functional Description
MFL RFOD CRC ILEN RAB
20
4
DescriptorID(5:0)
19
3
18
PEB 3456 E
2
17
1
0
0
05.2001
16
0
0
0