STLC5466 STMicroelectronics, STLC5466 Datasheet - Page 19

• Manufacturer Part Number: STLC5466
• Description: RF Wireless Misc Multi-HDLC Sw Matrix
• Manufacturer: STMicroelectronics
• Type: Telecom ICr

Specifications of STLC5466

• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-176
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

As for the HDLC mode the correspondence be-
tween the physical time slot and the logical chan-
nel is fully defined in the two Time Slot Assigners
(Time slot used or not used, logical channel
number, source, destination).
III.2.6 - Command of the HDLC Channels
The microprocessor is able to control each HDLC
receive and transmit channel. Some of the com-
mands are specific to the transmission or the re-
ception but others are identical.
III.2.6.1 - Reception Control
– The configuration of the controller operating
– The control of the controller: START, HALT,
– Reception of FLAG (01111110) or IDLE
– Address recognition. The microprocessor de-
– In transparent mode: “fill character” register is
III.2.6.2 - Transmission Control
– The configuration of the controller operating
– The control of the controller: START, HALT,
tected in each timeslot and will not be trans-
ferred to the external memory. The detection of
“Fill character” marks the end of a message and
generates an interrupt if BINT=1). When the “Fill
character” is not detected a new message is re-
ceiving.
mode is: HDLC mode or Transparent mode.
CONTINUE, ABORT.
START: On a start command, the RxDMA con-
troller reads the address of the first descriptor in
the initialization block memory and is ready to
receive a frame.
HALT: For overloading reasons, the microproc-
essor can decide to halt the reception. The DMA
controller finishes transfer of the current frame
to external memory and stops. The channel can
be restarted on CONTINUE command.
CONTINUE: The reception restarts in the next
descriptor.
ABORT: On an abort command, the reception is
instantaneously stopped. The channel can be
restarted on a START or CONTINUE command.
(11111111) between Frames.
fines the addresses that the Rx controller has to
take into account.
selected or not.
mode is: HDLC mode or Transparent mode.
CONTINUE, ABORT.
TS0
B1
CGI Channel 0
TS1
B2
MON
TS2
TS3
S/C
CGI Channel 1 to Channel 6
– Transmission of FLAG (01111110) or IDLE
– CRC can be generated or not. If the CRC is not
– In transparent mode: “fill character” register can
III.3 - C/I and Monitor
III.3.1 - Function Description
The Multi-HDLC is able to operate both GCI and
V* links. The TDM DIN/DOUT 4 and 5 are internal-
ly connected to the CI and Monitor receivers/trans-
mitters. Since the controllers handle up to 16CI
and 16 Monitor channels simultaneously, the Mul-
ti-HDLC can manage up to 16 level 1 circuits.
The Multi-HDLC can be used to support the CI and
monitor channels based on the following proto-
cols:
– ISDN V* protocol
– ISDN GCI protocol
– Analog GCI protocol.
III.3.2 - GCI and V* Protocol
A TDM can carry 8 GCI channels or V* channels.
The monitor and S/C bytes always stand at the
same position in the TDM in both cases.
START: On a start command, the Tx DMA con-
troller reads the address of the first descriptor in
the initialization block memory and tries to trans-
mit the first frame if End Of Queue is not at “1”.
HALT: The transmitter finishes to send the cur-
rent frame and stops.The channel can be re-
started on a CONTINUE command.
CONTINUE: if the CONTINUE command occurs
after HALT command, the HDLC Transmitter re-
starts by transmitting the next buffer associated
to the next descriptor.
If the CONTINUE command occurs after an
ABORT command which has occurred during a
frame, the HDLC transmitter restarts by trans-
mitting the frame which has been effectively
aborted by the microprocessor.
ABORT: On an abort command, the transmis-
sion of the current frame is instantaneously
stopped, an ABORT sequence “1111111” is
sent, followed by IDLE or FLAG bytes. The
channel can be restarted on a START or CON-
TINUE command.
(111111111) between frames can be selected.
generated by the HDLC Controller, it must be lo-
cated in the shared memory.
be selected or not.
TS28
B1
CGI Channel 7
TS29
B2
TS30
MON
STLC5466
TS31
S/C
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