XRT94L33IB datasheet(39/862 Pages) EXAR

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XRT94L33

Rev 2

22 ...0

00 ...0

33 ---C

C H

H A

A N

N N

N E

E L

L D

D S

S 3

33 ///E

E 3

33 ///S

S T

T S

S -

-- 1

11 T

T O

O S

S T

T S

S -

-- 3

33 ///S

S T

T M

M -

-- 1

11 M

M A

A P

P P

P E

E R

R –

–– A

A T

T M

M R

R E

E G

G IIIS

S T

T E

E R

R S

1.2

THE OPERATION CONTROL BLOCK

The Operation Control Block is responsible for the following functions.

• Control of the Interrupt Structure (at the Highest Level within the XRT94L33)

• Control of the Clock Synthesizer block

• Control of the STS-3/STM-1 Telecom Bus Interface

• Control of the STS-1 Telecom Bus Interfaces

The register map for the Operation Control block is presented in the Table below. Additionally, a detailed

description of each of the “Operation Control” Block registers is presented below.

1.2.1

OPERATION CONTROL BLOCK REGISTER

Table 2: Operation Control Register Address Map

INDIVIDUAL

ADDRESS

LOCATION

DEFAULT VALUE

0x00

0x0100

Operation Control Register – Byte 3

0x00

0x01

0x0101

Operation Control Register – Byte 2

0x00

0x02

0x0102

Reserved

0x00

0x03

0x0103

Operation Control Register – Byte 0

0x00

0x04

0x0104

Operation Status Register – Byte 3 (Device ID)

0xE3

0x05

0x0105

Operation Status Register – Byte 2 (Revision ID)

0x01

0x06 – 0x0A

0x0106 – 0x010A

Reserved

0x00

0x0B

0x010B

Operation Interrupt Status Register – Byte 0

0x00

0x0C – 0x0E

0x010C –

0x010E

Reserved

0x00

0x0F

0x010F

Operation Interrupt Enable Register – Byte 0

0x00

0x10 – 0x11

0x0110 – 0x0111

Reserved

0x00

0x12

0x0112

Operation Block Interrupt Status Register – Byte 1

0x00

0x13

0x0113

Operation Block Interrupt Status Register – Byte 0

0x00

0x14 – 0x15

0x0114 – 0x0115

Reserved

0x00

0x16

0x0116

Operation Block Interrupt Enable Register – Byte 1

0x00

0x17

0x0117

Operation Block Interrupt Enable Register – Byte 0

0x00

0x18 – 0x19

0x0118 – 0x0119

Reserved

0x00

0x1A

0x0111A

Reserved

0x00

0x1B

0x011B

Mode Control Register – Byte 0

0x00

0x1C – 0x1E

0x011C –

0x011E

Reserved

0x00

0x1F

0x011F

Loop-back Control Register – Byte 0

0x00

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