DS64BR401_13 Datasheet, PDF(18/36 Page) Texas Instruments – Quad Bi-Directional Transceiver with Equalization and De-Emphasis

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DS64BR401_13 Datasheet, PDF (18/36 Pages) Texas Instruments – Quad Bi-Directional Transceiver with Equalization and De-Emphasis

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DS64BR401

SNLS304G â JUNE 2009 â REVISED APRIL 2013

www.ti.com

Address Register Name

0x00

Reset

0x01

PWDN Channels

0x02

PWDN Control

0x08

Pin Control Override

0x0E

CH0 - CHB0

IDLE RATE Select

0x0F

CH0 - CHB0

EQ Control

0x10

CH0 - CHB0

VOD Control

Table 9. SMBus Register Map

Bit (s) Field

7:1 Reserved

Reset

7:0 PWDN CHx

7:1 Reserved

Override PWDN

7:5 Reserved

Override IDLE

Reserved

Override RATE

1:0 Reserved

7:6 Reserved

IDLE auto

IDLE select

3:2 Reserved

RATE auto

RATE select

7:6 Reserved

5:0 CH0 IB0 EQ

7:6 Reserved

5:0 CH0 OB0 VOD

Type

R/W

Default

0x00

0x0

0x20

0x00

0x03

Description

Set bits to 0.

SMBus Reset

1: Reset registers to default value

Power Down per Channel

[7]: CHA_3

[6]: CHA_2

[5]: CHA_1

[4]: CHA_0

[3]: CHB_3

[2]: CHB_2

[1]: CHB_1

[0]: CHB_0

00'h = all channels enabled

FF'h = all channels disabled

Set bits to 0.

0: Allow PWDN pin control

1: Block PWDN pin control

Set bits to 0.

0: Allow IDLE pin control

1: Block IDLE pin control

Set bit to 0.

0: Allow RATE pin control

1: Block RATE pin control

Set bits to 0.

0: Allow IDLE_sel control in Bit 4

1: Automatic IDLE detect

0: Output is ON (SD is disabled)

1: Output is muted (electrical idle)

Set bits to 0.

0: Allow RATE_sel control in Bit 0

1: Automatic RATE detect

0: 2.5 to 3.2 Gbps

1: 5.0 to 6.4 Gbps

Set bits to 0.

IB0 EQ Control - total of 24 levels

(3 gain stages with 8 settings)

[5]: Enable EQ

[4:3]: Gain Stage Control

[2:0]: Boost Level Control

Pin [EQ0 EQ1] = Register [EN] [GST] [BST] =

Hex Value

FF = 100000 = 20'h = Bypass (Default)

11 = 101010 = 2A'h

00 = 110000 = 30'h

0F = 110001 = 31'h

01 = 111000 = 38'h

1F = 110100 = 34'h

10 = 110101 = 35'h

F0 = 111010 = 3A'h

F1 = 111100 = 3C'h

Set bit to 0.

OB0 VOD Control

03'h = 600 mV (Default)

07'h = 800 mV

0F'h = 1000 mV

1F'h = 1200 mV

3F'h = 1400 mV

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