PEB20534H-10 SIEMENS [Siemens Semiconductor Group], PEB20534H-10 Datasheet - Page 96

• Manufacturer Part Number: PEB20534H-10
• Description: DMA Supported Serial Communication Controller with 4 Channels DSCC4
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Semiconductor Group
6
The Multi Function Port consists of a set of I/O signal pins and three internal function
blocks sharing these signal pins.
The function blocks are:
• Local Bus Interface (LBI)
• Synchronous Serial Communication Interface (SSC)
• General Purpose I/O Port (GPP)
The MFP is only available in PCI bus operation mode, because in de-multiplexed bus
mode, all MFP I/O signals are used for the 32-bit address bus extension.
Various configurations allow simultaneous operation of the three function blocks:
Figure 23
The configuration is selected via bit field ’PERCFG’ in register GMODE. The following
table shows all supported ’PERCFG’ bit field options (also refer to “GMODE: Global
Mode Register” on page 241):
Peripheral Block
LBI Ctrl.
LBI Ctrl.
LBI Ctrl.
LBI Ctrl.
Multi Function Port (MFP)
MFP Configurations Overview
12
LBI Ctrl.
(EBC)
LBI
LD(15:0)
LD(15:0)
LD/LA(15:0)
LD/LA(15:0)
16
LD(15:0)
GPP
MFP
LA(15:8)
GP(15:8)
GP(15:8)
GP(15:8)
8
LA(15:8),
GP(15:8)
96
SSC
LA(7:0)
LA(7:0)
SSC
GP(7:0)
8
LA(7:0),
GP(7:0),
SSC
Multi Function Port (MFP)
Configurations:
LBI only
LBI + 8 bit GPP
LBI + 8 bit GPP + SSC
LBI + 16 bit GPP
Data Sheet 09.98
PEB 20534