
Maxim Integrated Products 1
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple
revisions of any device may be simultaneously available through various sales channels. For information about device
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
DS33M30/DS33M31/DS33M33
Ethernet Over SONET/SDH Mapper
________________________ General Description
The DS33M30 family of products provides a compact
and efficient solution for transporting Gigabit Ethernet
traffic over OC-3/STM-1 optical networks. With the
addition of an optical transceiver, Ethernet PHY,
DDR SDRAM, and host processor, a complete
solution of GbE over OC-3/STM-1 can be
implemented. The family supports Ethernet over
SONET/SDH (EoS) at VC-4, “Next-Generation” EoS
high-order mapping with multiple concatenated
VC-3s, and Ethernet over PDH over SONET/SDH
(EoPoS) with up to three virtually concatenated
DS3/E3
tributaries.
The
supported
frame
encapsulations include GFP-F, HDLC, cHDLC, and
X.86 (LAPS).
_______________________________ Applications
Ethernet Service Delivery Over SONET/SDH
Multiservice Provisioning Platforms (MSPPs)
Transparent LAN Services
LAN Extension
_____________________________________Features
Support for EoS in One STS-3c/VC-4, EoS
Over Up to Three Concatenated STS-1/VC-3s,
and EoPoS Over Up to Three Concatenated
DS-3s
Two Independent 155.52Mbps SerDes Ports
One 10/100/1000 IEEE 802.3 Ethernet MAC
Port
Configurable MII/RMII/GMII MAC Interface
GFP/LAPS/HDLC/cHDLC Encapsulation
IEEE 802.1Q VLAN and Q-in-Q Support
Add/Drop OAM Frames from P Interface
Quality of Service (QoS) Support
Traffic Policing Through CIR/CBS
Classification Through PCP or DSCP
Supports Up to 512Mb DDR SDRAM Buffer
SPI and Parallel Microprocessor Interfaces
1.8V, 2.5V, 3.3V Supplies
Features continued in Section 1. _________________________ Functional Diagram
____________________________________________________________Ordering Information/Selector Guide
PART
SUPPORTED EoS/EoPoS
MODES
155Mbps PORTS
EXT. DS3/E3 LINE
PIN-PACKAGE
DS33M30N+
EoS at VC-4
1
No
144 CSBGA
DS33M31N+
EoS at VC-4,
EoS at 3xVC-3,
EoPoS at 3xDS3
2
No
256 CSBGA
DS33M33N+
EoS at VC-4,
EoS at 3xVC-3,
EoPoS at 3xDS3
2
Yes (3)
256 CSBGA
+Denotes a lead(Pb)-free/RoHS-compliant package.
Rev 1; 010809
VC
AT
/
LCAS
DS3/E3
Framers
GF
P/
HDL
C/
L
AP
S
Tr
affi
cM
gm
t
Ad
van
ced
O
AM
Eth
er
ne
tM
AC
Hi
gh
-O
rd
er
Map
per
Fr
am
er
B
3x VC-3
3
SER
DES
A
DS33M30/M31/M33
3
DS3 ADD/DROP (DS33M33 ONLY)
1 VC-4
SER
DES
B
SerDes B AND FRAMER B ON
(DS33M31/33 ONLY)
Fr
am
er
A