peb20534 Infineon Technologies Corporation, peb20534 Datasheet - Page 106

• Manufacturer Part Number: peb20534
• Description: Dma Supported Serial Communication Controller With 4 Channels
• Manufacturer: Infineon Technologies Corporation

PEB 20534
PEF 20534
Multi Function Port (MFP)
6.1.1.6
LBI (EBC) Configuration
The properties of a bus cycle usage of signal LRDY, external bus mode and waitstates
are controlled by LBI Configuration register LCONF and global mode register GMODE.
This allows the use of memory components or peripherals with different interfaces within
the same system, while optimizing accesses to each of them.
LCONF is described in
“LBI Registers Description” on Page
351.
EBC Idle State:
Upon reset the MFP comes up in 16-bit de-multiplexed bus LBI mode. The EBC can then
be programmed to be arbitration master or slave by software.
When the EBC bus interface is enabled in arbitration master mode, but no external
access is currently executed, the EBC is idle. During this idle state the external interface
behaves in the following way:
Data port LD(15:0) switches in high impedance state (floating);
Address port LA(15:0) drives the last used address value;
LRD/LWR signals remain inactive (high).
Data Sheet
106
2000-05-30