User Manual
___________________________________________________ DS33M30/M31/M33 ABRIDGED DATA SHEET
Rev: 111908 5 of 20
Table 1-1. Product Selection Matrix
PART
ETHERNET
PORT
STS-3/
STM-1
PORT
PDH
(DS3/E3)
PORT
ETHERNET
MAPPING
VLAN
FORWARDING
SUPPORT
PRIORITY
FORWARDING
SUPPORT
VCAT
GROUPS
(VCGS)
μP
CONTROL
PACKAGE
DS33M30
1 GbE
1 0 EoS NA Y 1 SPI
10mm, 144
CSBGA
DS33M31
1 (10/100,
GbE)
2 (1+1
protected)
0 EoS, EoPoS Y Y 3
SPI or
Parallel
17mm, 256
CSBGA
DS33M33
1 (10/100,
GbE)
2 (1+1
protected)
3 EoS, EoPoS Y Y 3
SPI or
Parallel
17mm, 256
CSBGA
Note: The number of members for a VCG in the DS33M31 and DS33M33 can be 1, 2, or 3.
1.1 Device Feature Overview
Note: See the glossary section (in the full data sheet) for the descriptions of terms used in this
documentation, especially for the terms referring to the ports, blocks, and directions.
Table 1-2. Summary of Mapping Functions
MAPPING FUNCTIONS “>” DS33M30 DS33M31 DS33M33 NOTES
1 Ethernet > STS-3c > STS-3 x x x —
2 Ethernet > AU-4 > STM-1 x x x —
3 Ethernet > STS-1 > STS-3 — x x —
4 Ethernet > AU-3 > STM-1 — x x —
5 Ethernet > TU-3 > AU-4 > STM-1 — x x —
6 Ethernet > DS3 > STS-1 > STS-3 — x x
7 Ethernet > DS3 > AU-3 > STM-1 — x x
8 Ethernet > DS3 > TU-3 > AU-4 > STM-1 — x x
Without
external DS3
port
9 Ethernet > E3 > STS-1 > STS-3 — x x
10 Ethernet > E3 > AU-3 > STM-1 — x x
11 Ethernet > E3 > TU-3 > AU-4 > STM-1 — x x
Without
external E3
port
12 DS3 > STS-1 > STS-3 — — x —
13 DS3 > AU-3 > STM-1 — — x —
14 DS3 > TU-3 > AU-4 > STM-1 — — x —
15 E3 > STS-1 > STS-3 — — x —
16 E3 > AU-3 > STM-1 — — x —
17 E3 > TU-3 > AU-4 > STM-1 — — x —
The DS33M30 family of devices offer the following features:
• Supports the mapping protocols as listed in
Table 1-2.
• Supports single 10/100/1000Mbps Ethernet interface
• STS-3/STM-1 interface operating at 155.52Mbps
• Supports two transmit timing modes for STS-3/STM-1 port(s):
• Loop timing (transmit timing reference = receive timing)
• Local timing (transmit timing reference = CLAD timing)
• Supports three transmit timing modes for Line DS3/E3 ports: (DS33M33)
• Loop timed (transmit timing reference = receive timing)
• Line timed (or thru timed) (transmit timing reference = Drop DS3/E3 thru timing)
• Local timed (transmit timing reference = CLAD timing)
• Certain clock, data, and control signals can be inverted to allow a glueless interface to other devices
• Certain port can be put into a low-power standby mode when not being used