ISL35822LPIK【PDF 19/75 页】IC CLOCK/DATA RECOVERY 192EBGA-B

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Sheet目录2001

Note (1): Only register values operated on by the ISL35822 are individually listed. The others are merely copied from the I2C NVR space.

Note (2): Although data can be written to these registers, it will be volatile, unless the ‘Write NVR’ operation as specified in “Writing EEPROM Space through the I2C

Interface” on page 19 is performed.

Note (3): Checksum to be calculated from 1.8007’h to 1.807C’h. Host can check for validity.

Note (4): If WRTP pin is high, this is the only area that can be written by the user. See also Note (2) above.

Note (5): Checksum to be calculated from 1.807E’h to 1.80AC’h.

Note (6): Checksum to be calculated from 1.80AE’h to 1.8105’h.

Note (1): Suggested values are given, for a full LX4 module with four individual-lane DOM circuits, at least one having the DOM data at Device Address A2’h.

Note (2): Last three significant bits of the (default) DOM I2C Device Address (NB LSB is a read/write flag). Upper bits are assumed to be ‘1010’b, Device address will be

(A0’h + 2*(<1.32890.2:0>). A device MUST be present at this address for correct operation if bit 6 is set.

Note (3): Although data can be written to this register, it should only be done for writing the NVR, using the ‘Write NVR’ operation as specified in “Writing EEPROM Space

through the I2C Interface” on page 19. The values here should normally only be loaded from the NVR, since they could affect the operation of the ISL35822 if

incorrect.

Table 22. XENPAK NVR REGISTER COPY

MDIO XENPAK/XPAK/X2 NVR REGISTER ADDRESSES = 1.32775:33030 (1.8007:8106’h)

BYTE ADDRESS

NAME

DESCRIPTION(1)

SUGGESTED VALUE

R/W

DETAILS

DEC

HEX

1.32775 to

1.32817

1.8007 to

1.8031

NVR Register

Copy

XENPAK NVR Register Copies

R/W(2)

1.32818 to

1.32821

1.8032 to

1.8035

PKG OUI

XENPAK/XPAK/X2 Package OUI (bits 3 to

24)

Xenpak = 0008BE

XPAK = 000ACB

X2 = 000C64

R/W(2)

Mirrored to 1.14:15

(1.E:F’h)

1.32822 to

1.32889

1.8036 to

1.8079

NVR Register

Copy

XENPAK NVR Register Copies

R/W(2)

1.32890

1.807A

DOM Ctrl

DOM Capability Bits

R/W(2)

Table 23

1.32891

1.32892

1.807B

1.807C

NVR Reg Copy

XENPAK NVR Register Copies

R/W(2)

1.32893

1.807D

Basic Chksm

Basic Field Checksum(3)

Σ(1.8007:807C)

1.32894 to

1.32940

1.807E to

1.80AC

NVR Register

Copy

Customer Writable Area(4)

R/W(2)

1.32941

1.80AD

Cstm Chksm

Customer Area Checksum(5)

Σ(1.807E:80AC)

1.32942 to

1.33027

1.80AE to

1.8103

NVR Register

Copy

Vendor Specific Area

R/W(2)

1.33028

1.8104

A/C Size

Auto-configure Size (N)

See page 16

(or 00 or FF’h)

See Table 92

1.33029

1.8105

A/C Pointer

Auto-configure Pointer (S)

1.33030

1.8106

Vndr Chksm

Vendor Specific Checksum(6)

Σ(1.80AE:8105)

Table 23. XENPAK DIGITAL OPTICAL MONITORING (DOM) CAPABILITY REGISTER

MDIO (XENPAK) REGISTER, ADDRESS = 1. 32890 (1. 807A’h)

BIT

NAME

SETTING

SUGGESTED

VALUE(1)

R/W(3)

DESCRIPTION

1.32890.15:8

Reserved

000’h

1.32890.7

DOM Ctrl Reg

1 = Implemented

0 = Not

implemented

1’b

R/W

DOM Control/Status Register 1.A100’h

1.32890.6

DOM system

1’b

R/W

DOM Implemented

1.32890.5

Lane-by Lane

1’b

R/W

WDM Lane-by-Lane DOM; registers 1.A0C0:A0FF’h

valid

1.32890.4

LBC Scale

1 = 10

0 = 2

R/W

Laser Bias Scale Factor

1.32890.3

Reserved

1.32890.2:0

DOM Address

001’b

R/W

I2C Device Address of (initial) DOM IC(2)

ISL35822

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