.
IBM42M10SNYAA20
IBM42M10LNYAA10
1063 Mbps Gigabit Link Module - No OFC
Features
• 1063 Mbps data rate
• Short wavelength (SW; distance
≤
500 m) and
long wavelength (LW; distance
≤
10 km) ver-
sions available
• (ANSI) Fibre Channel compliant (longer dis-
tances are available on a custom basis)
• FCSI-301-Revision 1.0 compliant (Gigabaud
Link Module)
• 20-bit electrical interface
• Parallel electrical
⇔
light conversion
• Clock and data recovery
• Serialization/deserialization
• International Class 1 laser safety certified
• UL & CSA approved
• Low bit error rate (<10
-12
)
• High reliability (AFR <0.0195%/khr, over 44
khours)
Applications
•
•
•
•
•
•
•
Fibre Channel
Client/Server environments
Distributed multi-processing
Fault tolerant applications
Visualization, real-time video, collaboration
Channel extenders, data storage, archiving
Data acquisition
Overview
IBM42M10SNYAA20 and IBM42M10LNYAA10 are
1063 Mbps Gigabit Link Modules (GLMs). These
highly integrated fiber optic transceivers provide
high-speed serial links at a signaling rate of 1062.5
Mbps, which equates to 100 MBps of continuous
throughput simultaneously in each direction. The
IBM42M10SNYAA20 conforms to the American
National Standards Institute’s (ANSI) Fibre Channel,
FC-0 specification for short wavelength operation
(100-M5-SL-I and 100-M6-SL-I) [1]. The
IBM42M10LNYAA10 conforms to the ANSI FC-0
specification for longwave operation (100-SM-LL-I).
These modules can also be used for other serial
applications where high data rates are required.
They are compact, double-sided, surface mount
modules designed to easily connect to a user’s sys-
tem card. Data and control lines conform to industry
standard TTL interface levels.
The IBM42M10SNYAA20 uses short wavelength
(850 nm) VCSEL lasers. This enables low cost data
transmission over optical fibers at distances up to
500 m. A 50/125
µm
multimode optical fiber, termi-
nated with an industry standard SC connector, is the
preferred medium. A 62.5/125
µm
multimode fiber
can be substituted with shorter maximum link dis-
tances.
The IBM42M10LNYAA10 uses long wavelength
(1300 nm) lasers. This enables data transmission
over optical fibers at distances up to 10km on a sin-
gle mode (9/125
µm)
optical fiber.
Twenty-bit encoded transmit data is received, serial-
ized at 1062.5 Mbaud, and modulated on the laser.
The 20-bit data must be encoded using the 8b/10b
encoding scheme [3, 4] specified by the Fibre Chan-
nel standard.
Incoming, modulated light is received by a photore-
ceiver mounted in the SC receptacle. A Phase
Locked Loop (PLL) recovers the clock and retimes
the serial data which is deserialized into a 20-bit
word and presented to the interface at 53.125 MHz.
GLM1063N.03
November 29, 2000
©IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
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