Update: 01 October, 2023
The DS21455/DS21458 is a quad monolithic device featuring independent transceivers that can be software configured for T1, E1, or J1 operation. Each is composed of a line interface unit (LIU), framer, HDLC controllers, and a TDM backplane interface, and is controlled via an 8-bit parallel port configured for Intel or Motorola bus operations. The DS21455* is a direct replacement for the older DS21Q55 quad MCM device. The DS21458, in a smaller package (17mm CSBGA) and featuring an improved controller interface, is software compatible with the older DS21Q55. Unlike the DS21Q55, which has a JTAG controller-per-transceiver architecture, the JTAG function on the DS21455/DS21458 is a single controller for all four transceivers.
File format: PDF
Size: -
MD5 Checksum: B5BA7B744AFE1162008640BEA89D326D
Publication date: 03 July, 2012
Downloads: -
PDF Link: MAXIM DS21455/DS21458 Quad T1/E1/J1 Transceivers handbook PDF