器件名称: YTD436
功能描述: ISTC ISDN BRI controller with S/T ref. pt. analog D/R
文件大小: 542.55KB 共14页
简 介:YTD436
ISTC
ISDN BRI controller with S/T ref. pt. analog D/R
YTD436 is a high-performance communication LSI for the ISDN BRI user-network interface function (digital four-wire time-division full-duplex operation), supporting D channel layer 1 and layer 2 functions in one 100-pin SQFP chip. YTD436 supports layer 1 (physical layer) control function conforming to ITU-T Recommendation I.430 and fully supports layer 2 (LAPD protocol) function conforming to ITU-T Recommendations Q.920 and Q.921. ETSI (European Telecommunication Standards Institute) and North American standard operating modes are also supported. In addition, YTD436 includes layer 3 processor interface function which operate in DMA transfer mode or I/O transfer mode. This gives a great advantage for mounting and functional designing of both “active” (CPU on board) terminal equipment and “passive” (no CPU on board) PC cards. The layer 1 function has a built-in S/T reference point analog driver/receiver to support the S/T reference point interface. In order to support the U interface, YTD436 also has a I.430 TTL interface (no built-in analog driver/receiver) suitable for connecting to an NT1 chip or a DSU module.
YTD436 CATALOG CATALOG No.:4TD436A41 2005.1
Features
1. Layer 1 function
Conforms to ITU-T Recommendation I.430 (1992 edition) and TTC Standard JT-I430 (1997 edition) (default) - 192 kbps transmission rate - Interface structure : 2B + D (B = 64 kbps, D = 16 kbps) - Frame assembling and disassembling functi……
