SBI Bus Serializer ASSP Telecom Standard Product Data Sheet
Released
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2000168, Issue 5
48
Pin Name
Type
Pin
No.
Function
set high, connection memory page 1 is selected. When
ICMP is set low, connection memory page 0 is selected.
The byte location during which ICMP is sampled is
dependant on the mode of operation.
4-Frame SBI/SBI336 mode:
ICMP is sampled at the C1 byte position of the
incoming bus on the first frame of the 4-frame multi-
frame (marked by IC1FP[1]). Changes to the
connection memory page selection is synchronized to
the frame boundary (A1 byte position) of the next four-
frame multi-frame.
48-Frame SBI/SBI336 mode:
ICMP is sampled at the C1 byte position of the
incoming bus on the first frame of the 48-frame multi-
frame (marked by IC1FP[1]). Changes to the
connection memory page selection is synchronized to
the frame boundary (A1 byte position) of the next 48-
frame multi-frame.
Telecom Bus mode:
ICMP is sampled at the C1 byte position of every frame
on the incoming bus (marked by IC1FP[4:1]). Changes
to the connection memory page selection are
synchronized to the frame boundary (A1 byte position)
of the next frame.
ICMP is sampled on the rising edge of SREFCLK.
OCMP
Input
B6
Outgoing Connection Memory Page.
The outgoing
connection memory page select signal, OCMP, controls
the selection of the connection memory page in the
Outgoing Memory Switch Unit, OMSU. When OCMP is
set high, connection memory page 1 is selected. When
OCMP is set low, connection memory page 0 is
selected.
The byte location during which OCMP is sampled is
dependant on the mode of operation.
4-Frame SBI/SBI336 mode:
OCMP is sampled at the C1 byte position of the receive
bus on the first frame of the 4-frame multi-frame
(marked by RC1FP). Changes to the connection
memory page selection is synchronized to the frame
boundary (A1 byte position) of the next four-frame multi-
frame.
48-Frame SBI/SBI336 mode:
OCMP is sampled at the C1 byte position of the receive
bus on the first frame of the 48-frame multi-frame
(marked by RC1FP). Changes to the connection
memory page selection is synchronized to the frame
boundary (A1 byte position) of the next 48-frame multi-
frame.
Telecom Bus mode:
OCMP is sampled at the C1 byte position of every
frame on the receive bus (marked by RC1FP).