PSB2115HV1.2 Lantiq, PSB2115HV1.2 Datasheet - Page 245

• Manufacturer Part Number: PSB2115HV1.2
• Manufacturer: Lantiq

Specifications of PSB2115HV1.2

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Semiconductor Group
4.3.9
Value after reset: 00
EXIRD
XMR ... Transmit Message Repeat
The transmission of the last frame has to be repeated because:
– the IPAC has received a negative acknowledgment to an I frame in auto mode
– or a collision on the S bus has been detected after the 32
XDU ... Transmit Data Underrun
The current transmission of a frame is aborted by transmitting seven “1’s” because the
XFIFOD holds no further data. This interrupt occurs whenever the processor has failed
to respond to an XPR interrupt (ISTAD register) quickly enough, after having initiated a
transmission and the message to be transmitted is not yet complete.
When a XMR or an XDU interrupt is generated, it is not possible to send transparent
frames or I frames until the interrupt has been acknowledged by reading EXIR.
PCE ... Protocol Error (Used in auto mode only)
A protocol error has been detected in auto mode due to a received
– S or I frame with an incorrect sequence number N (R) or
– S frame containing an I field or
– I frame which is not a command or
– S-frame with an undefined control field.
RFO ... Receive Frame Overflow
The received data of a frame could not be stored, because the RFIFOD is occupied. The
whole message is lost.
This interrupt can be used for statistical purposes and indicates that the processor does
not respond quickly enough to an RPF or RME interrupt (ISTAD).
SOV ... Synchronous Transfer Overflow
The synchronous transfer programmed in STCR has not been acknowledged in time via
the SC0/SC1 bit.
(according to HDLC/LAPD)
frame.
EXIRD - Extended Interrupt Register (Read)
7
XMR
XDU
H
.
PCE
RFO
245
SOV
MOS
Detailed Register Description
SAW
nd
data byte of a transmit
0
WOV
PSB 2115
PSF 2115
11.97
(A4)