pef20550 Infineon Technologies Corporation, pef20550 Datasheet - Page 169

• Manufacturer Part Number: pef20550
• Description: Extended Line Card Interface Controller Elic
• Manufacturer: Infineon Technologies Corporation

XPD/XTF Transmit Prepared Data/Transmit Transparent Frame.
XDD
XME
Note: When using the DMA-mode XME must not be used.
XRES
Semiconductor Group
Transmit Direct Data (auto-mode only!).
Prepares the transmission of an I-frame ("direct data") in auto-mode. The
actual transmission starts, when the SACCO receives a RR-frame with poll-
bit set. Upon the reception of an I-frame with poll-bit set, an I-response is
issued.
Transmit Message End (interrupt mode only).
A ’1’ indicate that the data block written last to the XFIFO completes the
actual frame. The SACCO can terminate the transmission operation properly
by appending the CRC and the closing flag sequence to the data. XME is
used only in combination with XPD/XTF or XDD.
Transmit Reset.
The contents of the XFIFO is deleted and IDLE is transmitted. This command
can be used by the CPU to abort a frame currently in transmission. After
setting XRES a XPR-interrupt is generated in every case.
Auto-mode: XPD
Prepares the transmission of an I-frame ("prepared data") in auto-mode.
The actual transmission starts, when the SACCO receives an I-frame with
poll-bit set and AxH as the first data byte (PBC-command "transmit
prepared data"). Upon the reception of a different poll frame a response is
generated automatically (RR-poll
AxH
Non-auto-mode, transparent mode 0,1: XTF
The transmission of the XFIFO contents is started, an opening flag
sequence is automatically added.
Extended transparent mode 0,1: XTF
The transmission of the XFIFO contents is started, no opening flag
sequence is added.
I-response).
169
RR-response, I-poll with first byte not
Detailed Register Description
PEB 20550
PEF 20550
01.96