PM5345 S/UNI-155
DATA SHEET
PMC-930305
ISSUE 4
SATURN USER NETWORK INTERFACE
9
PIN DESCRIPTION
Table 1
Pin Name Type
-
Pin
Function
No.
RSER
Input
25
The receive serial input (RSER) selects the
receive line interface. RSER is tied high to
select the 155.52 Mbit/s interface (on pins
RXC+, RXC-, RXD+, and RXD-). RSER is tied
low to select the 19.44 Mbyte/s interface (on
pins PICLK, PIN[7:0], and FPIN).
RXD+
RXD-
Input
143
142
The receive differential data inputs (RXD+,
RXD-) contain the 155.52 Mbit/s receive STS-
3c (STM-1) stream when the bit serial interface
is selected (RSER is tied high). RXD+/- is
sampled on the rising edge of RXC+/- (the
falling edge may be used by reversing RXC+/-
).
RXC+
RXC-
Input
139
138
The receive differential clock inputs (RXC+,
RXC-) contain the receive clock when the bit
serial interface is selected (RSER is tied high).
RXC+/- is nominally a 155.52 MHz, 50% duty
cycle clock. This clock is divided by eight
internally to produce RCLK when the bit serial
interface is selected and provide timing for the
S/UNI receive functions. RXD+/- is sampled
on the rising edge of RXC+/-.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
16
PMC [ PMC-SIERRA, INC ]
