pef20550 Infineon Technologies Corporation, pef20550 Datasheet - Page 67

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

Figure 36
Polling of up to 64 Bytes Direct Data
If more than 64 bytes are transmitted, the XFIFO is used as an intermediate buffer. Data
has to be reloaded after transmission was started.
Figure 37
Polling More than 64 bytes of Direct Data (e.g. 96 bytes)
Semiconductor Group
CMDR : XDD/XME
CMDR : XDD
ISTA : XPR
ISTA : XPR
WR XFIFO
WR XFIFO
XDD/XME
CMDR : XDD
CMDR : XDD
ISTA : XPR
ISTA : XPR
CMDR :
WR XFIFO
WR XFIFO
WR XFIFO
SACCO
Slave
SACCO
Slave
Complete I-Frame
RR-Acknowledge
RR-Response
Complete I-Frame
RR-Poll
RR-Poll
67
RR-Poll
Group Controller
Group Controller
Master
(PBC)
Master
(PBC)
ITS05833
Functional Description
ITS05834
GC polls,
data is available,
the slave sends an
I-frame.
GC acknowledges,
the slave emits an XPR
interrupt, new data can
be loaded.
GC polls,
no data is available,
the slave generates
a RR-response.
GC polls,
data is available,
the slave sends an
I-frame,
data has to be
reloaded during
transmission.
PEB 20550
PEF 20550
01.96