MT9076BB1 Просмотр технического описания (PDF) - Zarlink Semiconductor Inc

Номер в каталоге

Компоненты Описание

производитель

MT9076BB1

T1/E1/J1 3.3 V Single Chip Transceiver

Zarlink Semiconductor Inc 

MT9076B

Data Sheet

4.3 Identification Code

The MT9076 shall be identified by the code 01111000, read from the identification code status register (page

03H, address 1FH).

4.3.1 ST-BUS Streams

In T1 mode, there is one control and one status ST-BUS stream that can be used to program / access channel

associated signaling nibbles. CSTo contains the received channel associated signaling bits, and for those channels

whose Per Time Slot Control word bit 1 “RPSIG” is set low, CSTi is used to control the transmit channel associated

signaling. The DSTi and DSTo streams contain the transmit and receive voice and digital data. Only 24 of the 32

ST-BUS channels are used for each of DSTi, DSTo, CSTi and CSTo. In each case individual channel mapping is as

illustrated in Table 6, “ST-BUS vs. DS1 to Channel Relationship(T1),” on page 30.

In E1 mode, ST-BUS streams can also be used to access channel associated signaling nibbles. CSTo contains the

received channel associated signaling bits (e.g., ITU-T R1 and R2 signaling), and for those channels whose Per

Time Slot Control word bit 1 “RPSIG” is set low, CSTi is used to control the transmit channel associated signaling.

The DSTi and DSTo streams contain the transmit and receive voice and digital data.

Only 30 of the 32 ST-BUS channels are used for each of DSTi, DSTo, CSTi and CSTo. In each case individual

channel mapping is as illustrated in Table 10 Time slot to Channel Relationship.

5.0 Reset Operation (Initialization)

The MT9076 can be reset using the hardware RESET pin (pin 11 in PLCC, pin 64 in LQFP) or the software reset bit

RST (page 1H, address 1AH). When the device emerges from its reset state it will begin to function with the default

settings described in Table 14 (T1) Table 15 (E1). All control registers are set to 00H. A reset operation takes 1 full

frame (125 us) to complete.

Function

Mode

Loopbacks

SLC-96

Zero Coding

Line Codes

Data Link

signaling

AB/ABCD Bit Debounce

Interrupts

Error Insertion

HDLCs

Counters

Transmit Data

Table 14 - Reset Status(T1)

Status

D4

Deactivated

Deactivated

Deactivated

Deactivated

Serial Mode

CAS Registers

Deactivated

masked

Deactivated

Deactivated

Cleared

All Ones

37

Zarlink Semiconductor Inc.

Share Link: