peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 65

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

Figure 2-12 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 2-13 Polling More than 64 Bytes of Direct Data (e.g. 96 bytes)
Semiconductor Group
CMDR : XDD
CMDR : XDD/XME
ISTA : XPR
ISTA : XPR
WR XFIFO
WR XFIFO
XDD/XME
CMDR :
CMDR : XDD
CMDR : XDD
ISTA : XPR
ISTA : XPR
WR XFIFO
WR XFIFO
WR XFIFO
SACCO
Slave
SACCO
Slave
Complete I-Frame
RR-Acknowledge
RR-Response
RR-Poll
RR-Poll
Complete I-Frame
2-19
RR-Poll
Group Controller
Functional Block Description
Master
(PBC)
Group Controller
Master
(PBC)
ITS05833
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 20560
2003-08