txc-03453b TranSwitch Corporation, txc-03453b Datasheet - Page 51
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txc-03453b
Manufacturer Part Number
txc-03453b
Description
Tl3m Device Triple Level Mapper
Manufacturer
TranSwitch Corporation
Datasheet
1.TXC-03453B.pdf
(96 pages)
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OPERATION
DIGITAL DESYNCHRONIZER PLL CONNECTIONS
The following diagram shows the external connections required for each of the three digital desynchronizers,
where n defines the channels 1 through 3.
Traces should be kept as short as possible. Place the external components as close as possible to the associ-
ated device leads. Please refer to AN-537 (TXC-03453-AN1) for additional recommendations for board layout
design. This Application Note is available on the TL3M page of the TranSwitch web site, www.transwitch.com.
TRANSMIT AND RECEIVE SYNTHESIZER CONNECTIONS
The following diagram shows the external connections required for the two synthesizer circuits.
Traces should be kept as short as possible. Place the external components as close as possible to the associ-
ated device leads. Please refer to AN-537 (TXC-03453-AN1) for additional recommendations for board layout
design. This Application Note is available on the TL3M page of the TranSwitch web site, www.transwitch.com.
* Preferred: 1.0 F, 10V ceramic X7R 1206.
Alternate: 4.7 F, 6.3V ceramic X5R 1206.
Figure 28. Transmit and Receive Synthesizer External Component Connections
Proprietary TranSwitch Corporation Information for use Solely by its Customers
10V, Ceramic
X7R 0603
220 pF
Figure 27. Digital Desynchronizer External Component Connections
30.1 K
No Connection
1.0 F 10%*
No Connection
30.1 K
1%
1%
DATA SHEET
- 51 of 96 -
TL3M - Channels 1, 2, 3
VRDn (leads M21, N21, V22)
DBSn (leads L21, P19, U20)
GRDn (leads L20, N20, U22)
DFnA (leads M22, R22, W22)
DFnB (leads L22, R21, Y22)
SUBDn (leads K22, N22, U21)
GRSn (leads E2, W2)
TL3M, n = 1, 2
VRSn (leads F3, Y2)
SBSn (leads D1, V3)
SUBSn (leads E1, AA1)
PRELIMINARY TXC-03453B-MB, Ed. 3
TXC-03453B
September 2003
TL3M
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