PSB3186HV14XP Lantiq, PSB3186HV14XP Datasheet - Page 117
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PSB3186HV14XP
Manufacturer Part Number
PSB3186HV14XP
Description
Manufacturer
Lantiq
Datasheet
1.PSB3186HV14XP.pdf
(200 pages)
Specifications of PSB3186HV14XP
Number Of Line Interfaces
1
Control Interface
HDLC
Lead Free Status / Rohs Status
Compliant
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3.8.4
By setting the enable HDLC data bits (D_EN_D, D_EN_B1, D_EN_B2) in the DCI_CR
register the HDLC controller can access the D, B1 and B2 channels or any combination
of them. In all modes (except extended transparent mode) transmission always works
frame aligned, i.e. it starts with the first selected channel, whereas reception searches
for a flag anywhere in the serial data stream.
3.8.5
This non-HDLC mode is selected by setting MODE2...0 to ’100’. In extended transparent
mode fully transparent data transmission/reception without HDLC framing is performed
i.e. without FLAG generation/recognition, CRC generation/check, bitstuffing mechanism.
This allows user specific protocol variations.
Transmitter
The transmitter sends the data out of the FIFO without manipulation. Transmission is
always IOM-2 frame aligned and byte aligned, i.e. transmission starts in the first selected
channel (B1, B2, D, according to the setting of register DCI_CR in the IOM-2 Handler) of
the next IOM-2 frame.
The FIFO indications and commands are the same as in other modes.
If the microcontroller sets XTF & XME the transmitter responds with an XPR interrupt
after sending the last byte, then it returns to its idle state (sending continuous ‘1’).
If the collision detection is enabled in D-channel (MODE.DIM = ’0x1’) the stop go bit (S/
G) can be used as clear to send indication as in any other mode. If the S/G bit is set to
’1’ (stop) during transmission the transmitter responds always with an XMR (transmit
message repeat) interrupt.
If the microcontroller fails to respond to a XPR interrupt in time and the transmitter runs
out of data then it will assert an XDU (transmit data underrun) interrupt.
Receiver
The reception is IOM-2 frame aligned and byte aligned, like transmission, i.e. reception
starts in the first selected channel (B1, B2, D, according to the setting of registers
DCI_CR in the IOM-2 Handler) of the next IOM-2 frame. The FIFO indications and
commands are the same as in others modes.
All incoming data bytes are stored in the RFIFOD and is additionally made available in
RSTAD. If the FIFO is full an RFO interrupt is asserted (EXMD.SRA = ’0’).
Note: In the extended transparent mode the EXMD register has to be set to ’xxx00000’
Data Sheet
Access to IOM-2 Channels
Extended Transparent Mode
117
Description of Functional Blocks
ISAC-SX TE
PSB 3186
2003-01-30
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