Datasheet > IMP8980DP/T

IMP8980DP/T

更新时间： 2024-01-30 11:15:27

品牌	Logo	应用领域
IMP		开关 PC
页数	文件大小	规格书
14页	137K
描述
PCM Digital Switch

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中文翻译

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技术参数
数据手册

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IMP8980DP/T 技术参数

生命周期：	Obsolete	零件包装代码：	LCC
包装说明：	,	针数：	44
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.29	JESD-30 代码：	S-PQCC-J44
端子数量：	44	封装主体材料：	PLASTIC/EPOXY
封装形状：	SQUARE	封装形式：	CHIP CARRIER
认证状态：	Not Qualified	表面贴装：	YES
电信集成电路类型：	DIGITAL TIME SWITCH	端子形式：	J BEND
端子位置：	QUAD

IMP8980DP/T 数据手册

stream into active Message Mode; i.e., the

contents of the Connection Memory Low

are output on the ST-BUS output streams

once every frame unless the ODE pin is

low. In this mode the chip behaves as if

bits 2 and 0 of every Connection Memory

High location were 1, regardless of the

actual values.

High location function normally (see

Figure 5). If bit 2 is 1, the associated ST-

BUS output channel is in Message Mode;

i.e., the byte in the corresponding Connec-

tion Memory Low location is transmitted

on the stream at that channel. Otherwise,

one of the bytes received on the serial

inputs is transmitted and the contents of

the Connection Memory Low define the

ST-BUS input stream and channel where

the byte is to be found (see Figure 6).

If bit 6 of the Control Register is 0, then

bits 2 and 0 of each Connection Memory

Figure 3- Address Memory Map

A5 A4

A2 A1

A0 HEX ADDRESS

LOCATION

ꢀ

00-1F

ꢀ

Control Register*

Channel 0†

Channel 1†

ꢀ

Channel 31†

* Writing to the Control Register is the only fast transaction.

† Memory and stream are specified by the contents of the Control Register.

Figure 4 - Control Register Bits

Mode

Control

Bits

Stream

Address

Bits

Memory

Select

Bits

(Unused)

BIT

NAME

DESCRIPTION

Split

When 1, all subsequent reads are from the Data Memory

and writes are to the Connection Memory Low, except when

the Control Register is accessed again. When 0, the Memory

Select bits specify the memory for subsequent operations. In

either case, the Stream Address Bits select the subsection of

the memory which is made available.

Memory

Message

Mode

When 1, the contents of the Connection Memory Low are output

on the Serial Output streams except when the ODE pin is low.

When 0, the Connection Memory bits for each channel determine

what is output.

(unused)

Memory

4-3

0-0 - Not to be used

Select Bits

0-1 - Data Memory (read only from the microprocessor port)

1-0 - Connection Memory Low

1-1 - Connection Memory High

2-0

Stream

Address

Bits

The number expressed in binary notation on these bits refers to

the input or output ST-BUS stream which corresponds to the

subsection of memory made accessible for subsequent operations.

1 234 5 6 7...14

中文翻译

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