GC5318 Datasheet, PDF(4/45 Page) Texas Instruments – HIGH-DENSITY DIGITAL UPCONVERTER

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GC5318 Datasheet, PDF (4/45 Pages) Texas Instruments – HIGH-DENSITY DIGITAL UPCONVERTER

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GC5318

HIGH-DENSITY DIGITAL UPCONVERTER

SLWS187 â JULY 2006

2 GC5318 Operation

Transmit

Output Data

(to D/A Converter)

www.ti.com

Transmit

Output

Interface

For UMTS

DUC 0 Inputs:

I UMTS

Q UMTS

For CDMA

I/Q CDMA Ch A

I/Q CDMA Ch B

txin_0_a

txin_0_b

Frame sync for DUC 0 & 1

tx_sync_out_0

DUC 1 Inputs:

I UMTS

Q UMTS

I/Q CDMA Ch A

I/Q CDMA Ch B

txin_1_a

DUC 10 Inputs:

I UMTS

Q UMTS

I/Q CDMA Ch A

I/Q CDMA Ch B

txin_10_a

txin_10_b

Frame sync for DUC 10 & 11

tx_sync_out_5

DUC 11 Inputs:

(baseband data)

I UMTS

Q UMTS

I/Q CDMA Ch A

I/Q CDMA Ch B

txin_11_a

txin_11_b

Sum Chain Out

DUC 0

2 CDMA2000

or 1 UMTS

Sum Chain

DUC 1

2 CDMA2000

or 1 UMTS

DUCs 2-9

Sum Chain

DUC 10

2 CDMA2000

or 1 UMTS

Sum Chain

DUC 11

2 CDMA2000

or 1 UMTS

txclk

Transmit

Input Syncs

tx_synca

tx_syncb

tx_syncc

tx_syncd

Transmit Syncs

tx_sync_out

Figure 2-1. GC5318 Block Diagram

The GC5318 provides up to 24 CDMA2000 or 12 UMTS digital upconversion (DUC) channels. There are

12 DUC blocks, DUC 0 through DUC 11, as shown in the block diagram of Figure 2-1. Each block can be

configured as a single UMTS channel or as two CDMA channels.

GC5318 Operation

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