Abstract: The Dallas Semiconductor framers can operate in a transparent mode in both the receive and transmit directions. The transmitter will not insert framing, signaling, or other information such as CRC or FDL. Generally, the receive side of the framers is always transparent. Data received at RTIP and RRING is passed through intact to RSER. All configurations are with the elastic stores disabled. The elastic stores will not alter data except during slip conditions or if configured for 1.544MHz/2.048MHz conversion or signaling reinsertion. Introduction This application note applies to the following products. T1 Framers E1 Framers T1/E1/J1 Framers T1 SCTs E1 SCTs T1/E1 SCTs DS21Q41 DS21Q43 DS26401 DS2151 DS2153 DS2155 DS21Q42 DS21Q44   DS2152 DS2154 DS21Q55 DS21FF42 DS21FF44   DS21352 DS21354 DS2156 DS21FT42 DS21FT44   DS21552 DS21554 DS21455       DS21Q352 DS21Q354 DS21458       DS21Q552 DS21Q554 DS26521         DS2150 DS26524         DS21Q50 DS26528 The Dallas Semiconductor framers can operate in a transparent mode in both the receive and transmit directions. The transmitter will not insert framing, signaling, or other information such as CRC or FDL. Generally, the receive side of the framers is always transparent. Data received at RTIP and RRING is passed through intact to RSER. All configurations are with the elastic stores disabled. The elastic stores will not alter data except during slip conditions or if configured for 1.544MHz/2.048MHz conversion or signaling reinsertion. Transparent Operation on DS21Q42, DS21FF42, DS21FT42, DS21352, DS21552, DS21Q352, DS21Q552 Register Configurations: TCR1.2, TCR1.5, TCR1.6 = 1 TCR1.0, TCR1.1, TCR1.4 = 0 TCR2.0 = 0 TIR1, TIR2, TIR3 = 00h TCC1, TCC2, TCC3 = 00h RCC1, RCC2, RCC3 = 00h TDC1.7 = 0 CCR1.5 = 0 RMR1, RMR2, RMR3 = 00h Transparent Operation on DS21Q44, DS21FF44, DS21FT44, DS21354, DS21554, DS21Q354, DS21Q554 Register Configurations: TCR1.6 = 1 TCR1.2, TCR1.3, TCR1.4, TCR1.5 = 0 TCR2.1, TCR2.2, TCR2.3, TCR2.4, TCR2.5, TCR2.6, TCR2.7 = 0 CCR1.4 = 0 CCR2.3, CCR2.4, CCR2.5 = 0 TIR1, TIR2, TIR3, TIR4 = 00h TCC1, TCC2, TCC3, TCC4 = 00h RCC1, RCC2, RCC3, RCC4 = 00h TSaCR = 00h TDC1.7 = 0 Transparent Operation on DS2152 Register Configurations: TCR1.2, TCR1.5, TCR1.6 = 1 TCR1.0, TCR1.1, TCR1.4 = 0 TCR2.0 = 0 TIR1, TIR2, TIR3 = 00h TCC1, TCC2, TCC3 = 00h RCC1, RCC2, RCC3 = 00h CCR1.5 = 0 RMR1, RMR2, RMR3 = 00h Transparent Operation on DS2154 Register Configurations: TCR1.6 = 1 TCR1.2, TCR1.3, TCR1.4, TCR1.5 = 0 TCR2.1, TCR2.2, TCR2.3, TCR2.4, TCR2.5, TCR2.6, TCR2.7 = 0 CCR1.4 = 0 CCR2.3, CCR2.4, CCR2.5 = 0 CCR4.5 = 0 TIR1, TIR2, TIR3, TIR4 = 00h TCC1, TCC2, TCC3, TCC4 = 00h RCC1, RCC2, RCC3, RCC4 = 00h Transparent Operation on DS2155, DS2156, DS21455, DS21458 and DS21Q55 for E1 Mode Register Configurations: MSTRREG = 02h T1RCR1= 00h, T1RCR2= 00h T1TCR1= 00h, T1TCR2= 00h T1CCR1 = 00h E1RCR1 = 00h, E1RCR2 = 00h E1TCR1= 80h, E1TCR2= 00h CCR1 = 00h, CCR2 = 00h, CCR3 = 00h, CCR4 = 00h H1TC = 00h, H2TC = 00h Transparent Operation on DS2155, DS2156, DS21455, DS21458 and DS21Q55 for T1 Mode Register Configurations: MSTRREG = 00h T1RCR1= 1Eh, T1RCR2= 60h T1TCR1= 60h, T1TCR2= 80h T1CCR1 = 04h E1RCR1 = 00h, E1RCR2 = 00h E1TCR1= 00h, E1TCR2= 00h CCR1 = 00h, CCR2 = 00h, CCR3 = 00h, CCR4 = 00h H1TC = 00h, H2TC = 00h Transparent Operation on DS21Q50 for E1 Mode Register Configurations: RCR1 = 00h CCR1 = 00h, CCR2 = 00h, CCR3 = 00h, CCR4 = 00h CCR5 = 00h TIR1 = 00h, TIR2 = 00h, TIR3 = 00h, TIR4 = 00h Transparent Operation on DS2151, DS21Q41 Hardware Considerations: TSER and TLINK must be tied together either logically or physically. Register Configurations: TCR1.2, TCR1.5, TCR1.6 = 1 TCR1.0, TCR1.1, TCR1.4 = 0 TCR2.0 = 0 TIR1, TIR2, TIR3 = 00h CCR1.5 = 0 RMR1, RMR2, RMR3 = 00h Transparent Operation on DS2153, DS21Q43 Hardware Considerations: Need rev A5 or better for complete receive transparency with elastic store enabled (DS2153 only). Register Configurations: TCR1.6 = 1 TCR1.2, TCR1.3, TCR1.4, TCR1.5 = 0 CCR1.4 = 0 CCR2.3, CCR2.4, CCR2.5 = 0 TIR1, TIR2, TIR3, TIR4 = 00h TCR2.1, TCR2.2, TCR2.3, TCR2.4, TCR2.5, TCR2.6, TCR2.7 = 0 RCR2.1 = 0 (required on rev A2 devices only) In order to get transparent mode working on the devices DS26401, DS26521, DS26524 and DS26528, the customer should never set the RMMR and TMMR INIT_DONE bits to 1. Doing so will cause the framer to search for the framing pattern. Transparent Operation on DS26401 for E1 Mode Register Configurations: RMMR = 81h RCR1 = 22h, RCR2 = 00h TMMR = 81h TCR1= 80h, TCR2= 00h Transparent Operation on DS26401 for T1 Mode Register Configurations: RMMR = 80h RCR1= CAh, RCR2= 0Ch TMMR = 80h TCR1= 64h, TCR2= 00h, TCR3= 00h Transparent Operation on DS26521, DS26524 and DS26528 for E1 Mode Register Configurations: RMMR = 81h E1RCR1 = 22h, E1RCR2 = 00h, E1RCR3 = 00h TMMR = 81h E1TCR1= 80h, E1TCR2= 00h, TCR3 = 00h Transparent Operation on DS26521, DS26524 and DS26528 for T1 Mode Register Configurations: RMMR = 80h T1RCR1= CAh, T1RCR2= 0Ch TMMR = 80h T1TCR1= 64h, T1TCR2= 00h, TCR3= 00h Conclusion If you have further questions about transparent operation on Dallas Semiconductor framers or SCTs, contact the Telecommunications Applications Support Team via email at or call 972-371-6555. 관련 부품   APP 336: Dec 05, 2001 DS21352 3.3V DS21352 및 5V DS21552 T1 단일 칩 트랜시버 전체 데이터 시트 (PDF, 1.1MB) 무료 샘플 DS21354 3.3V/5V E1 단일 칩 트랜시버 (SCT) 전체 데이터 시트 (PDF, 960kB) 무료 샘플 DS2152 고급 T1 단일 칩 트랜시버 전체 데이터 시트 (PDF, 1.3MB) 무료 샘플 DS2154 고급 E1 단일 칩 트랜시버 전체 데이터 시트 (PDF, 1MB) 무료 샘플 DS2155 T1/E1/J1 단일 칩 트랜시버 전체 데이터 시트 (PDF, 2.0MB) 무료 샘플 DS21552 3.3V DS21352 및 5V DS21552 T1 단일 칩 트랜시버 전체 데이터 시트 (PDF, 1.1MB) 무료 샘플 DS21554 3.3V/5V E1 단일 칩 트랜시버 (SCT) 전체 데이터 시트 (PDF, 960kB) 무료 샘플 DS21FF42 4 x 4 16채널 T1 프레이머 / 4 x 3 12채널 T1 프레이머 전체 데이터 시트 (PDF, 704kB) DS21FF44 4 x 3 12채널 E1 프레이머/4 x 4 16채널 E1 프레이머 전체 데이터 시트 (PDF, 704kB) DS21FT42 4 x 4 16채널 T1 프레이머 / 4 x 3 12채널 T1 프레이머 전체 데이터 시트 (PDF, 704kB) DS21FT44 4 x 3 12채널 E1 프레이머/4 x 4 16채널 E1 프레이머 전체 데이터 시트 (PDF, 704kB) DS21Q352 4채널 T1/E1 트랜시버 (3.3V,5.0V) 전체 데이터 시트 (PDF, 176kB) 무료 샘플 DS21Q354 4채널 T1/E1 트랜시버 (3.3V,5.0V) 전체 데이터 시트 (PDF, 176kB) 무료 샘플 DS21Q42 고급 쿼드 T1 프레이머 전체 데이터 시트 (PDF, 960kB) 무료 샘플 DS21Q44 고급 쿼드 E1 프레이머 전체 데이터 시트 (PDF, 712kB) DS21Q50 쿼드 E1 트랜시버 전체 데이터 시트 (PDF, 784kB) 무료 샘플 DS21Q55 쿼드 T1/E1/J1 트랜시버 전체 데이터 시트 (PDF, 1.4MB) DS21Q55 쿼드 T1/E1/J1 트랜시버 전체 데이터 시트 (PDF, 1.4MB) DS21Q554 4채널 T1/E1 트랜시버 (3.3V,5.0V) 전체 데이터 시트 (PDF, 176kB) 무료 샘플 자동 업데이트 관심 분야의 애플리케이션 노트가 나올 때 자동으로 업데이트를 원하십니까? 그렇다면 EE-Mail™을 신청하십시오. 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