PEB20534H-10 SIEMENS [Siemens Semiconductor Group], PEB20534H-10 Datasheet - Page 42

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

Semiconductor Group
Table 4
Pin No.
147
149
164
151
152
153
160
Symbol
LHLDA
LCSO
LALE
LRD
LWR
LBHE
LRDY
Local Bus Interface (LBI) / General Purpose Port (GPP) /
Synchronous Serial Control (SSC) Interface Pins (cont’d)
Input (I)
Output (O)
I/O
O
O
O
O
O
I
Function
LBI Hold Status
(The function depends on whether slave or
master mode is selected in register LCONF)
As an output, LHLDA = ’0’ confirms that the
LBI bus is in HOLD mode (master mode).
As an input, LHLDA = ’1’ means that DSCC4
must remain in hold mode (slave mode).
A Pull-Up resistor to V
if LBI is not used.
LBI Chip Select Output
Used to select LBI external peripheral
LBI Address Latch Enable
A Pull-Down resistor to V
recommended if LBI is not used or
operated in demultiplexed LBI
configuration.
LBI Read strobe
(see page 423 f. timing figures)
LBI Write strobe
(see page 423 f. timing figures)
LBI Byte high enable
(see page 423 f. timing figures)
LBI Ready strobe
Control signal for extended bus cycles. This
signal is asserted by the bus target to insert
wait states.
42
DD3
SS
is recommended
Pin Descriptions
is
Data Sheet 09.98
PEB 20534