CS61884 datasheet(38/72 Pages) CIRRUS

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CS61884

DS485PP4

14.16 Global Control Register (0Fh)

14.17 Line Length Channel ID Register (10h)

BIT

NAME

Description

This register is the global control for the AWG Auto-Increment, Automatic AIS insertion,

encoding/decoding and the jitter attenuators location, FIFO length and corner frequency for

all eight channels. Register bits default to 00h after power-up or reset.

[7]

AWG Auto-

Increment

The AWG Auto-Increment bit indicates whether to auto-increment the AWG Phase Address

the phase samples address portion of the address register increments after each read or

write access. This bit must be set before any bit in the AWG Enable register is set, if this

function is required.

[6]

RAISEN

On LOS, this bit controls the automatic AIS insertion into all eight receiver paths.

0=Disabled

1 = Enabled

[5]

RSVD

RESERVED (This bit must be set to 0.)

[4]

CODEN

Line encoding/decoding Selection

0 = B8ZS/HDB3 (T1/J1/E1 respectively)

1= AMI

[3]

FIFO

LENGTH

Jitter Attenuator FIFO length Selection

0 = 32 bits

1 = 64 bits

[2]

JACF

Jitter Attenuator Corner Frequency Selection

T1/J1

0 = 1.25Hz

3.78Hz

1 = 2.50Hz

7.56Hz

[1:0]

JASEL [1:0]

These bits select the position of the Jitter Attenuator.

BIT

NAME

Description

[7:3]

RSVD 7-3

RESERVED (These bits must be set to 0.)

[2:0]

LLID 2-0

The value written to these bits specify the LIU channel for which the Pulse Shape Configura-

tion Data (register 11h) applies. For example, writing a value of a binary 000 to the 3-LSBs

will select channel 0. The pulse shape configuration data for the channel specified in this reg-

ister are written or read through the Line Length Data Register (11h). Register bits default

to 00h after power-up or reset.

JASEL 1 JASEL 0

POSITION

Disabled

Transmit Path

Disabled

Receive Path

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