PEB20534H-10 SIEMENS [Siemens Semiconductor Group], PEB20534H-10 Datasheet - Page 41
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PEB20534H-10
Manufacturer Part Number
PEB20534H-10
Description
DMA Supported Serial Communication Controller with 4 Channels DSCC4
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PEB20534H-10.pdf
(442 pages)
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Table 4
Pin No.
146
148
122...128,
135...143
Semiconductor Group
Symbol
LD (15:0)
or
A(31:16)
LHOLD
LBREQ
Local Bus Interface (LBI) / General Purpose Port (GPP) /
Synchronous Serial Control (SSC) Interface Pins (cont’d)
Input (I)
Output (O)
I/O
I/O
I
O
Function
PCI Mode (DEMUX connected to VSS):
LBI Data
(GMODE.PERCFG=0XX
These pins provide the 16 bit Data bus for the
Local Bus Interface.
LBI Address/Data
(GMODE.PERCFG=100
These pins provide the 16 bit multiplexed
Address/Data bus for the Local Bus Interface.
Demultiplexed Mode (DEMUX connected
to VDD3) :
DEMUX Address Bus (31:16)
These pins provide the 16 most significant
address lines for the de-multiplexed interface.
LBI Hold Request
LHOLD = ’1’ is used for normal bus drive
mode.
LHOLD = ’0’ requests LBI to enter hold mode.
A Pull-Up resistor to V
if LBI is not used.
LBI Bus Request
The DSCC4 asserts LBREQ = ’0’ to request
the local bus and deasserts the signal
LBREQ = ’1’ after regaining bus.
41
DD3
2
2
)
)
is recommended
Pin Descriptions
Data Sheet 09.98
PEB 20534
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