M28529G-12 Mindspeed Technologies, M28529G-12 Datasheet - Page 16
M28529G-12
Manufacturer Part Number
M28529G-12
Description
ATM IMA 8.192Mbps 1.8V/3.3V 484-Pin BGA
Manufacturer
Mindspeed Technologies
Datasheet
1.M28529G-12.pdf
(309 pages)
Specifications of M28529G-12
Package
484BGA
Utopia Type
Level 2
Typical Operating Supply Voltage
1.8|3.3 V
Minimum Operating Supply Voltage
1.71|3.135 V
Maximum Operating Supply Voltage
1.89|3.465 V
Maximum Output Rate
8.192 Mbps
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1.1
1.1.1
This chapter provides a basic introduction to IMA. It will introduce common terminology, the IMA frame format and
IMA Cell structure. It will also address one of the challenges of IMA: differential delay between links. For detailed
coverage of these topics the reader should refer to the ATM forum's standard for IMA.
The M2852x is composed of the following major functional blocks as shown in
Figure 1-1.
1.1.2
Bandwidth, or the lack thereof, has always been the main challenge of telecommunications. While numerous
standards for high speed connections have been around for years, the cost of these higher speed connections
often prohibit users from deploying them. For example, users who need a data rate higher than the standard T1,
(1.544 Mbps) must pay for an entire DS3 (44 Mbps). Often the extra cost cannot be justified.
28529-DSH-001-K
* N o t e : T h e M 2 8 5 2 5 o n l y s u p p o r t s 1 6 T C P o r t s
M 2 8 5 2 9
M28525/9 Block Diagram Example
Overview
Introduction to IMA
Introduction To Inverse Multiplexing for ATM
I n t e r n a l
5 1 2 K x 8
S R A M
I M A c l o c ks
1.0 Functional Description
0
D if f e r e n t ia l D e la y
i
m e m o r y in t e r f a c e
T x B lo c k a n d
R x B lo c k a n d
P a s s t h r o u g h
P a s s t h r o u g h
e x tm e m s e l p in
E n g i n e
I M A
E x t e rn a l M e m o ry
I n t e rf a c e
1
Mindspeed Proprietary and Confidential
Mindspeed Technologies
J T A G
B l o c k
I M A
I n t e r f a c e
M i c r o
C o u n t e r s
T C
®
O n e S e c
T C B l o c k
T C S t a t u s
R e g i s te r s
p r o c e s s o r
p r o c e s s o r
p r o c e s s o r
p r o c e s s o r
C l o c ks
M i c r o
C e ll
C e ll
C e ll
C e ll
Figure
L in e in t e r f a c e 3 0
L in e in t e r f a c e 3 1
L in e in t e r f a c e
L in e in t e r f a c e
T C C o n tr o l
R e g i s te r s
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1
1-1.
1
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