PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 229

• Manufacturer Part Number: PEF22827EL-V11
• Manufacturer: Lantiq

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

10.13.4
The BPCNTL1, BPCNTL2, and
contain parameters that control back pressure and inter packet gap (IPG) handling.
BPCNTL3
MII Back Pressure Control Register 3(8D43
Field
BPEN
BPSTART
BPSTOP
BPM
Preliminary Data Sheet
BPEN
rw
7
MII Back Pressure Control Register 3 (BPCNTL3)
6
Bits Typ
7
6:5
4:3
2
BPSTART
rw
e
rw
rw
rw
5
Description
Back Pressure Enable
When the ABP bit (bit 2) in the MIICNTL register (8D40
is 1, this bit is read only.
0
1
Back Pressure Start Threshold
Back pressure starts when the space in the buffer drops
below the space specified in this field.
01
10
11
Back Pressure Stop Threshold
Back pressure stops when the space in the buffer rises
above BPSTART (bits 6:5) plus the space specified here.
00
01
10
11
Back Pressure Method of IPG Insertion
Valid only when there is back pressure.
0
1
B
B
B
B
B
B
B
B
B
B
B
BPCNTL3
Back pressure is disabled.
Back pressure is enabled.
2 Kbytes
4 Kbytes
6 Kbytes
0 bytes
64 bytes
1024 bytes
1536 bytes
Append data packet to back pressure pattern of any
length.
Insert IPG before data packet.
4
BPSTOP
229
rw
H
registers at 8D41
)
3
BPM
rw
2
H
:8D43
Rev. 1.1, 2005-01-30
Reset Value: 54
1
H
, respectively,
TBOA
VDSL6100i
PEF 22827
rw
0
H
)
H