PSB2115FV1.2D Lantiq, PSB2115FV1.2D Datasheet - Page 137

• Manufacturer Part Number: PSB2115FV1.2D
• Manufacturer: Lantiq

Specifications of PSB2115FV1.2D

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Semiconductor Group
2.7.4.3
Function: MON-1 and MON-2 commands provide access to the IPAC internal S/Q
Direction S
Direction IOM
Priority:
Modes:
channel on the S-interface. In order to synchronize onto multiframing pulses
(TE, LT-T modes) and issue monitor-messages (LT-S mode) the MFD (Multi-
frame disable) bit in the configuration register must be set to ZERO.
MON-1 and MON-2 commands may be passed at any instant provided the S-
interface is activated. They are always one byte long.
In the direction S-interface to IOM interface a 1 byte buffer is implemented.
Every time a S/Q message has been received on the S-interface which needs
to be forwarded to the IOM interface this message will be saved in a latch. This
latch allows retransmission of the old S/Q data on IOM in case the message
has not been read by the controller before a monitor timeout occurred.
While the latched data has not been read correctly from the monitor channel
the S/Q receiver will not reload the latch. Thus the IOM controller must read
out the S/Q messages from IOM once per 5 ms (multi-frame period). If this is
not guaranteed S/Q channel data may be lost.
No buffering is available in the direction IOM-interface to S-interface.
The IPAC will acknowledge a S/Q command correctly and transfer the
command into an internal S/Q transmit buffer if this command is received
during frame numbers 1-17. Once a command has been transferred into the
internal transmit register new S/Q commands received during frames 1-17 will
not be accepted by the IPAC (i.e. no acknowledgment issued with MR bit).
During frame numbers 18-20 however the monitor channel data is transferred
directly into the transmit register. During this period previously accepted S/Q
data could therefore be overwritten. To avoid this situation the controller must
be programmed to send no more than one S/Q command per multi-frame (5
ms).
Note that for both S
The above stated restriction thus applies only to S/Q commands referring to
the same channel.
Transmission of the stored data will commence with the new multi-frame.
MON-1 commands have the highest priority, MON-2 command are treated
with second priority.
Non-auto mode and transparent mode are available in all operational modes.
The SQM (SQ Mode) bit selects transparent mode (ONE) and non-auto mode
(ZERO).
registers. MON1 controls the S
MON-1, MON-2 Commands (S/Q Channel Access)
IOM:
S:
1
and S
2
channel a separate transmit register is reserved.
137
1
and Q channel, MON-2 controls the S
Functional Description
PSB 2115
PSF 2115
11.97
2