 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MT89L86 Datasheet(PDF) 11 Page - Mitel Networks Corporation |
|
||||||||||||||||||||||||||||||
MT89L86 Datasheet(HTML) 11 Page - Mitel Networks Corporation |
|
|
11 / 40 page  Advance Information MT89L86 11 six address input lines (A0-A5) and four control lines (CS , DS, R/W and DTA). See Figures 25 to 27 for each CPU interface timing. The parallel microprocessor port provides the access to the IMS, Control registers, the Connection Memory High, the Connection Memory Low and the Data Memory. All locations can be read or written except for the data memory which can be read only. Software Control The address bus on the microprocessor interface selects the internal registers and memories of the MT89L86. If the A5 address input is LOW, the Internal Control, Interface Mode, Stream Pair Selection and Frame Input Offset registers are addressed by the A4 to A0 bits according to Table 5. If the A5 input is HIGH, the remaining address input lines are used to select memory subsections of up to 128 locations corresponding to the maximum number of channels per input or output stream. The address input lines and the Stream Address bits (STA) of the Control register give the user the capability of accessing all sections of the MT89L86’s Data and Connect memories. The Control and Interface Mode Selection registers together control all the major functions of the device. The Interface Mode Select register should be set up during system power-up to establish the desired switching configuration as explained in the Serial Interface and Switching Configurations sections. The Control register is dynamically used by the CPU to control switching operations in the MT89L86. The Control register selects the device's internal memories and its subsections to specify the input and output channels selected for switching procedures. The data in the Control register consists of Split memory and Message mode bits, Memory select and Stream Address bits. The memory select bits allow the Connect Memory HIGH or LOW or the Data Memory to be chosen, and the Stream Address bits define an internal memory subsections corresponding to input or output ST-BUS streams. Bit 7 (Slip Memory) of the Control register allows split memory operation whereby reads are from the Data memory and writes are to the Connect Memory LOW. The Message Enable bit (bit 6) places every output channel on every output stream in message mode; i.e., the contents of the Connect Memory LOW Table 5 - Address Memory Map *: channels 0 to 31 are used in 2.048 Mb/s (8 x 8, 16 x 8 and 10 x 10) **: channels 0 to 63 are used in 4.096 Mb/s (Nibble Switching, 4 x 4, 8 x 4 or Different I/O rates) ***: channels 0 to 127 are used in 8.192 Mb/s (2 x 2 or Different I/O rates) A7 A6 A5 A4 A3 A2 A1 A0 Location X X 0 0 0 0 0 0 Control Register X X 0 0 0 0 0 1 Interface Mode Select Register X X 0 0 0 0 1 0 Stream Pair Select Register X X 0 0 0 0 1 1 Frame Input Offset Register 0 0 1 0 0 0 0 0 Channel 0* 0 • • 0 0 • • 0 1 1 1 1 0 • • 1 0 • • 1 0 • • 1 0 • • 1 1 • • 1 Channel 1* • • Channel 31* 0 1 1 0 0 0 0 0 Channel 32** 0 • • 0 1 • • 1 1 1 1 1 0 • • 1 0 • • 1 0 • • 1 0 • • 1 1 • • 1 Channel 33** • • Channel 63** 1 • • 1 0 • • 1 1 1 1 1 0 • • 1 0 • • 1 0 • • 1 0 • • 1 0 • • 1 Channel 64*** • • Channel 127*** |
Similar Part No. - MT89L86 |
|
Similar Description - MT89L86 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
