DK-DEV-4SGX230N Altera, DK-DEV-4SGX230N Datasheet - Page 569

• Manufacturer Part Number: DK-DEV-4SGX230N
• Description: KIT DEVELOPMENT STRATIX IV
• Manufacturer: Altera
• Series: Stratix® IVr
• Type: FPGAr

Specifications of DK-DEV-4SGX230N

• Contents: Development Board, Universal Power Supply, Cables and Software
• Silicon Manufacturer: Altera
• Core Architecture: FPGA
• Core Sub-architecture: Stratix
• Silicon Core Number: EP4S
• Silicon Family Name: Stratix IV GX
• Rohs Compliant: Yes
• For Use With/related Products: EP4SGX230K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 544-2594

Chapter 1: Transceiver Architecture in Stratix IV Devices
Transceiver Block Architecture
Figure 1–104. BTS in OSBAL
Note to
(1) “RP” means Reference Point.
February 2011 Altera Corporation
Figure
1–104:
Proprietary
Module(s)
Interface
Transport Module
If the destination for high-speed serial data leaving the REC is the first RE, it is a
single-hop connection. If serial data from the REC has to traverse through multiple
REs before reaching the destination RE, it is a multi-hop connection. Remotely
locating the RF transceiver from the main base station introduces a complexity with
overall system delay. CPRI specification requires that the accuracy of measurement of
round-trip delay on single-hop and multi-hop connections be within ±16.276 ns in
order to properly estimate the cable delay. For a single-hop system, this allows a
variation in round-trip delay of up to ±16.276 ns. For multi-hop systems however, the
allowed delay variation is divided among number of hops in the connection—
typically equal to ±16.276 ns/ (# of hops), but not always equally divided among the
hops. Deterministic latency on a CPRI link also enables highly accurate triangulation
of a caller ’s location.
The OBSAI was established by several OEM’s for developing a set of specifications
that can be used for configuring and connecting common modules into base
transceiver stations (BTS). The BTS has four main modules—radio frequency (RF),
baseband, control and transport.
Figure 1–104
using portable devices and converts them to digital data. The baseband module
processes the encoded signal and brings it back to baseband before transmitting it to
the terrestrial network using the transport module. Coordination between these three
functions is maintained by a control module.
Switch
& Clock
Control
shows a typical BTS. The radio frequency module (RFM) receives signals
RP2 (1)
Power System
Baseband
Module
BB
System Software
RP1 (1)
Clock and Sync
RP3 (1)
RF Module
RFM
Stratix IV Device Handbook Volume 2: Transceivers
Module
Control
1–125