PEB20321 Datasheet, PDF (30/366 Pages) Siemens Semiconductor Group – Multichannel Network Interface Controller for HDLC MUNICH32X

PEB 20321
PEF 20321
Overview
Table 1
Pin No.
136
40
PCI Bus Interface Pins (cont’d)
Symbol I/O
Function
RST
I
Reset
An asynchronous active low RST signal
brings all PCI registers, sequencers and
signals into a consistent state. All PCI
output signals are driven to their benign
state.
During RESET all output and I/O pins are
in tristate condition with the following
exception:
TXDEN is active high during RESET.
INTA
O (oD)
Interrupt Request
When an interrupt status is active and
unmasked, the MUNICH32X activates
this open-drain output. Examples of
interrupt sources are transmission/
reception error, completion of transmit or
receive packets etc. The MUNICH32X
deactivates INTA when the interrupt
status is acknowledged via an
appropriate action (e.g., specific register
write) and no other unmasked interrupt
statuses are active.
INTA is activated/ deactivated
asynchronous to the CLK.
Note: PCI control signals always require pull-up resistors. For the system dependent
pull-up recommendation please refer to PCI Specification Revision 2.1
chapter 4.3.3.
Data Sheet
30
2001-02-14