PM6341 E1XC
DATA SHEET
PMC-910419
ISSUE 8
E1 FRAMER/TRANSCEIVER
Pin Name Type
Pin No.
Function
PQFP PLCC
4 12
INTB
Output
Active low open-drain Interrupt signal
(INTB). This signal goes low when an
unmasked interrupt event is detected
on any of the internal interrupt
sources, including the internal HDLC
transceiver. Note that INTB will
remain low until all active, unmasked
interrupt sources are acknowledged at
their source.
CSB
Input
2
10
Active low chip select (CSB). This
signal must be low to enable E1XC
register accesses. Note that when not
being used, CSB must be tied high. If
CSB is not required (i.e. register
accesses are controlled using the
RDB and WRB signals only), CSB
must be connected to an inverted
version of the RSTB input. In any
case, CSB must be high at least once
after a powerup in order to clear
internal test modes.
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
I/O
5
13
14
15
16
21
22
23
24
Bidirectional data bus (D[7:0]).This
bus is used during E1XC read and
write accesses.
6
7
8
13
14
15
16
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
35
PMC [ PMC-SIERRA, INC ]
