PEB20571 INFINEON [Infineon Technologies AG], PEB20571 Datasheet - Page 65

• Manufacturer Part Number: PEB20571
• Description: ICs for Communications
• Manufacturer: INFINEON [Infineon Technologies AG]

3.2.3
3.2.3.1
Signals controlling and indicating the internal state of all U
are called INFOs. Four different INFOs (INFO 0, 1W, 1, 2, 3, 4) may be sent over the U
interface, depending on the actual state (Synchronized, Activated, Pending Activation,
...). When the line is deactivated, INFO 0 (=no signal on the line) is exchanged by the
U
When the line is activated, INFO 3 (in upstream direction) and INFO 4 (in downstream
direction) are continuously sent. INFO 3 and 4 contain the transmitted data (B1, B2, D,
M). INFO 1/2 are used for activation and synchronization.
Table 3-3
Name
INFO 0
INFO 1W
INFO 1
INFO 2
INFO 3
INFO 4
Note:
Preliminary Data Sheet
PN
transceivers at either end of the line.
1)
2)
U
INFO Structure on the U
The M channel superframe contains:
CV code violation
S bits transparent
T bits transparent
DC balancing bit;
PN
INFO Structure on U
Direction
Upstream
Downstream
Upstream
Upstream
Downstream 4 kHz burst rate
Upstream
Downstream 4 kHz burst rate
State Machine
Description
No signal on the line
Asynchronous Wake Signal
4 kHz burst rate
F0001000100010001000101010100010111111
Code violation in the framing bit
4 kHz burst rate
F000100010001000100010101010001011111M
Code violation in the framing bit
F000100010001000100010101010001011111M
Code violation in the frame bit
4 kHz burst rate
No code violation in the framing bit
User data in B, D and M channels
B channels scrambled, DC bit
No code violation in the framing bit
User data in B, D and M channels
B channels scrambled, DC bit
[1 kbit/s (once in every fourth frame)]
[1 kbit/s channel]
[2 kbit/s channel]
F = Framing bit
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Interface
PN
3-9
Interface
PN
2)
2
) optional
transceiver state machines
optional
Interface Description
1)
1)
DC
DELIC
2003-08
PN