GC5316_14 Datasheet, PDF (25/76 Pages) Texas Instruments – HIGH-DENSITY DIGITAL DOWNCONVERTER AND UPCONVERTER

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3 GC5316 Transmit
GC5316
SLWS154A − JANUARY 2004 − REVISED MARCH 2004
T ransm it
Output D ata
(to D/ As)
For UMTS
DUC 0 Inp uts:
I UMT S
Q UMT S
For CDMA
I/ Q C DMA C h A
I/ Q C DMA C h B
tx in_ 0 _ a
tx in_ 0 _ b
Fra me sync for DU C 0 & 1 tx_syn c_out_0
DUC 1 Inp uts:
I UMT S
Q UMT S
I/ Q C DMA C h A txin_1_a
I/ Q C DMA C h B txin_1_a
DU C 10 In pu ts:
I U MTS
Q U MTS
I/Q CD MA Ch A
I/Q CD MA Ch B
tx in_ 1 0 _ a
tx in_ 1 0 _ b
Fra me sync for DU C 10 & 11 tx_syn c_out_5
DU C 11 In pu ts:
(baseband data)
I U MTS
Q U MTS
I/Q CD MA Ch A txin_11_a
I/Q CD MA Ch B txin_11_b
T ra nsm it
Ou tpu t
I nte rface
SumChain Out
DU C 0
2 CDMA2000
or 1 UMTS
Sum Chain
DUC 1
2 CDMA2000
or 1 UMTS
DUCs 2−9
SumChain
DUC 10
2 CDMA2000
or 1 UMTS
Sum Chain
D U C 11
2 CDMA2000
or 1 UMTS
tx clk
Tra ns mit
Input Syncs
tx _ sy nca
tx _ sy ncb
tx _ sy ncc
tx _ sy ncd
Transmit Syncs
tx _ sy nc_ out
Figure 20. Transmit Section
The GC5316 transmit section provides up to 24 CDMA2000 or 12 UMTS digital upconversion (DUC) channels. There
are 12 DUC blocks, DUC 0 through DUC 11. Each block can be configured as a single UMTS channel or two CDMA
channels.
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