-------------------------------------------------------------------------------
| | SPEED | WIRED | PROCES| PROCES-| | | | (HIGH | TO | SED BY| SED BY | | | INPUT BUS | SPEED | DMC | DMC | DMC 3 | | | | LOW | No. | No. | WHEN | | | | SPEED) | | | TRANSFER | | | | | 1 2 3 | 1 2 3 | 3/1 3/2 | | |------------------|--------|-------|-------|----------|----------------------| |------------------|--------|-------|-------|----------|----------------------| | ILS 1 | " | X X X | X X X | X X |ILS1 ----> PFD1 & ND2 | | 2 | " | X X X | X X X | X X |ILS2 ----> PFD2 & ND1 | | | | | | |in standard definition| |------------------|--------|-------|-------|----------|----------------------| | R/A 1 | " | X X X | X X X | X X | | | 2 | " | X X X | X X X | X X | | |------------------|--------|-------|-------|----------|----------------------| | DME 1 | " | X X X | X X X | X X | | | 2 | " | X X X | X X X | X X | | |------------------|--------|-------|-------|----------|----------------------| | ADF 1 | " | X X X | X X X | X X | | | 2 | " | X X X | X X X | X X |(ADF2 optional) | |------------------|--------|-------|-------|----------|----------------------| | | | | | |From CAPT side : | | W/R 1-1 | ARINC | X X X | N(N)N | N |- Automatic selection | | | 453 | | | | 1-1/1-2 --> 2-1/2-2 | | 1-2 | (very | X X X |(N)N(N)| A | for DMC 1 when WXR | | | high | | | | T/R2 active instead | | | speed) | | | | of T/R1 | | XCVR 2 | 2-1 | | X X X | A(A)A | A |- Automatic inhibition| | optional | | | | | | of 1-1 if FMGC1 | | | 2-2 | | X X X |(A)A(A)| N | FM part bus invalid | | | | | | |ditto on F/O side | | | | | | |with respective buses | |------------------|--------|-------|-------|----------|----------------------| | FWC 1-1 | HS | X | X | | | | 1-2 | " | X | X | | | | 1-3 | " | X | X | X X | | | 2-1 | " | X | X | | | | 2-2 | " | X | X | | | | 2-3 | " | X | X | X X | | |------------------|--------|-------|-------|----------|----------------------| | FWC 1-1 | RS-422 | X | N | |A when FWC1 -X RS-422 | | Message bus 1-2 | " | X | N | |bus 1 is seen faulty | | 1-3 | " | X | N | N N | | | 2-1 | " | X | A | | | | 2-2 | " | X | A | | | | 2-3 | " | X | A | A A | |
 1EFF : 106-149, 303-399, 1 31-60-00Page 84 1 1 Config-3 Aug 01/05 1 1 1CES 1 -------------------------------------------------------------------------------| | SPEED | WIRED | PROCES| PROCES-| | | | (HIGH | TO | SED BY| SED BY | | | INPUT BUS | SPEED | DMC | DMC | DMC 3 | | | | LOW | No. | No. | WHEN | | | | SPEED) | | | TRANSFER | | | | | 1 2 3 | 1 2 3 | 3/1 3/2 | | |------------------|--------|-------|-------|----------|----------------------| |------------------|--------|-------|-------|----------|----------------------| | SDAC 1 | HS | X X X | X X X | X X | | | 2 | " | X X X | X X X | X X | | |------------------|--------|-------|-------|----------|----------------------| | ECU 1 A1 | LS | X X | N N | N N | | | (FADEC) 1 A2 | " | X | A | | | | system) 1 B1 | " | X X | A N | | | | 1 B2 | " | X | A | A A | | | or 2 A1 | " | X X | N N | N N | | | EEC 2 A2 | " | X | A | | | | 2 B1 | " | X X | A N | | | | 2 B2 | " | X | A | A A | | |------------------|--------|-------|-------|----------|----------------------| | ECAM CTL PNL | LS | X X X | X X X | X X | | |------------------|--------|-------|-------|----------|----------------------| | FQI - 1 | LS | X X X | N A N | N A |A, when onside bus of | | - 2 | | X X X | A N A | A N |FQI shows faulty | |------------------|--------|-------|-------|----------|----------------------| | CFDIU | " | X X X | X X X | X X | | | (General O/P | | | | | | | interrogation | | | | | | | bus) | | | | | |

 ------------------------------------------------------------------------------| | SPEED | WIRED | PROCES| PROCES-| | | | (HIGH | TO | SED BY| SED BY | | | INPUT BUS | SPEED | DMC | DMC | DMC 3 | | | | LOW | No. | No. | WHEN | | | | SPEED) | | | TRANSFER | | | | | 1 2 3 | 1 2 3 | 3/1 3/2 | | |----------------------------------------------------------------------------| | FCDC 1| LS | X X X | X X X | X X | | | 2| " | X X X | X X X | X X | | |------------------|--------|-------|-------|----------|---------------------| | LGCIU 1| LS | X X X | X X X | X X | | | 2| " | X X X | X X X | X X | | |------------------|--------|-------|-------|----------|---------------------| | TCAS 1-1| HS | X X | X X | X X | | | 1-2| " | X | X | | |
 1EFF : 106-149, 303-399, 1 31-60-00Page 85 1 1 Config-3 Aug 01/05 1 1 1CES 1 TABLE 3

 C. Reconfiguration Possibilities in the EIS System Itself (Ref. Fig. 045, 046)
 (1) Link between the DMCs and the DUs: DSDL The PFD, ND, ECAM processing channels drive their associated DUs through a switching stage first, and then via dedicated links called DSDL (Dedicated Serial Data Link), Master and Feedback. In normal operation, the DMC1 drives the CAPT PFD, the CAPT ND and the upper ECAM DU through their normal input N. And the DMC2 drives the F/O PFD, the F/O ND and the lower ECAM DU also through their normal input N (the DMC 3 is in standby, ready to take over the DMC 1 or 2 in case of failure). In fact, each DU has two inputs to receive the digital signals from the DMC dedicated buses (master DSDL), one normal input, N and one alternate input A. (This alternate input is used in some reconfiguration cases, following transfer controls as explained in the paragraphs 6.C.(2)(b) and (c) concerning DU failures). In turn, each DU sends back to its driving DMC digital signals through a dedicated bus which is called feedback DSDL. Through this feedback link, the DUs acknowledge proper reception of the DSDL master signals, and also inform the DMC of their detected failures, so that the DMC can make the proper action (for instance, automatic transfer of a PFD image on an ND in case of detected failure of the PFD).
　
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