Front-End Ttl Interfaces - PEP Modular Computers CP331 Manual

CP331
2.4.3

Front-End TTL Interfaces

LVDS Interface
The LVDS interface of the board variant CP331-LVDS is the standard interface for
remote digital flatpanel connections (up to 10m distance), with resolutions up to USXGA
quality (1280 x 1024). Due to its universal use, it is routed directly on-board. The
installed transmitter chips are the National Semiconductor DS90C5(3)83 or Texas
Instruments SN75LVDS83.
Note...
Dual-scan flat-panels cannot use this interface due to inconsis-
tent clock requirements.
Table 2-2: LVDS Connector Pinouts (Transmitter Side)
Pin
1 VEESAFE
2 TxOut0GND
3 VDDSAFE
4 TxOut1-
5 TxOut1+
6 TxOut2-
7 TxOut2+
8 GND
9 General Purpose 0
10 TxCLKOutGND
11 General Purpose 1
12 TxOut3-
13 TxOut3+
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Figure 2-3: Orientation of LVDS Connector
The front-end connector is a 26-pin Mini-Delta Ribbon (MDR) con-
nector which provides all required signals including the 5V and
12V supplies and several control signals used by external key-
boards, touch screens or similar peripheral devices.
Embedded within the LVDS cable are the +5V DC, +12V DC and
control lines required for remote display connection together with
additional (general purpose) lines provided for touch panel dis-
plays, keyboards, mouse, etc.
The pinouts of the LVDS connector is compliant with Apllication
Note AN-1085 FPD-Link by National Semiconductors as shown in
the below table.
Signal
© 2000 PEP Modular Computers GmbH
Functional Description
Pin
14 TxOut0-
15 TxOut0+
16 12VSAFE
17 TxOut1GND
18 General Purpose 2
19 TxOut2GND
20 General Purpose 3
21 General Purpose 4
22 TxCLKOut-
23 TxCLKOut+
24 General Purpose 5
25 TxOut3Gnd
26 General Purpose 6
Signal
ID 19947, Rev. 0200