PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 305

• Manufacturer Part Number: PEB2085
• Description: ISDN SubscribernAccess Controller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Semiconductor Group
}
if (pt->pt_rx_cnt > 260)
{
}
else
/************************************************************************/
/*
/* Now all information about the received frame is available:
/*
/*
/*
/*
/*
/************************************************************************/
if (rsta = (rsta & (RSTA_RDO | RSTA_CRC | RSTA_RAB)) ^RSTA_CRC)
switch (pt->pt_rx_frame)
pt->pt_rx_frame = PT_FR_OVERFLOW;
N201_ERROR(pei);
outp (pt->pt_r_cmdr, CMDR_RMC | CMDR_RHR | CMDR_XRES);
outp (pt->pt_r_timr, inp(pt->pt_r_timr));
pt->pt_state |= PT_HDLC_RESET;
FREE_TX_PATH (pt->pt_pei);
if (!CR_of_I_valid)
{
}
else
pt->pt_rx_frame = PT_FR_FAULT;
if (Two)
{
}
break;
pt->pt_rx_frame = PT_FR_FAULT;
PROTOCOL_ERROR (pt->pt_pei);
outp (pt->pt_r_cmdr, CMDR_RMC | CMDR_RHR | CMDR_XRES);
outp (pt->pt_r_timr, inp(pt->pt_r_timr));
pt->pt_state |= PT_HDLC_RESET;
FREE_TX_PATH (pt->pt_pei);
outp (pt->pt_r_cmdr, CMDR_RMC | (inp (pt->pt_r_star) & CMDR_RNR));
- performed address recognition or TEI and SAPI values.
- HDLC control field
- type of frame (HDLC U, UI, S, I frame).
- info about the validity of the frame
if (pt->pt_rx_cnt == 0)
if (pt->pt_rx_cnt > 0)
ctrl <<= 8;
ctrl
frame_status = MUTILATED;
pt->pt_rx_cnt--;
|= (WORD) *ptr++;
/* two byte control field ?
/* I part greater than 260 ?
/* must reset the controller
/* C/R of I frame invalid in TE ?
/* prevent acknowledging S-frame
/* beeing sent and create
/* PROTOCOL_ERROR message.
/* must reset the controller
/* enter ’RMC’ command if not
305
Low Level Controller
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/