BBT3821-JH Intersil, BBT3821-JH Datasheet - Page 26

• Manufacturer Part Number: BBT3821-JH
• Description: IC RE-TIMER OCTAL 192-BGA
• Manufacturer: Intersil
• Type: Clock and Data Recovery (CDR)r

Specifications of BBT3821-JH

• Input: Differential
• Output: CML
• Frequency - Max: 3.1875GHz
• Voltage - Supply: 1.425 V ~ 1.575 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 192-EBGA
• Frequency-max: 3.1875GHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Note (1): Only register values operated on by the BBT3821 are individually listed. The others are merely copied from the I
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
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 I
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
1.32775 to
1.32817
1.32818 to
1.32821
1.32822 to
1.32889
1.32890
1.32891
1.32892
1.32893
1.32894 to
1.32940
1.32941
1.32942 to
1.33027
1.33028
1.33029
1.33030
1.32890.15:8
1.32890.7
1.32890.6
1.32890.5
1.32890.4
1.32890.3
1.32890.2:0
BYTE ADDRESS
DEC
BIT
Interface” on page 19 is performed.
(A0’h + 2*(<1.32890.2:0>). A device MUST be present at this address for correct operation if bit 6 is set.
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 BBT3821 if
incorrect.
1.8007 to
1.8031
1.8032 to
1.8035
1.8036 to
1.8079
1.807A
1.807B
1.807C
1.807D
1.807E to
1.80AC
1.80AD
1.80AE to
1.8103
1.8104
1.8105
1.8106
HEX
Reserved
DOM Ctrl Reg
DOM system
Lane-by Lane
LBC Scale
Reserved
DOM Address
A/C Size
A/C Pointer
NVR Register
Copy
PKG OUI
NVR Register
Copy
DOM Ctrl
NVR Reg Copy
Basic Chksm
NVR Register
Copy
Cstm Chksm
NVR Register
Copy
Vndr Chksm
MDIO XENPAK/XPAK/X2 NVR REGISTER ADDRESSES = 1.32775:33030 (1.8007:8106’h)
NAME
Table 23. XENPAK DIGITAL OPTICAL MONITORING (DOM) CAPABILITY REGISTER
NAME
26
MDIO (XENPAK) REGISTER, ADDRESS = 1. 32890 (1. 807A’h)
1 = Implemented
0 = Not
implemented
1 = 10µA
0 = 2µA
XENPAK NVR Register Copies
XENPAK/XPAK/X2 Package OUI (bits 3 to
24)
XENPAK NVR Register Copies
DOM Capability Bits
XENPAK NVR Register Copies
Basic Field Checksum
Customer Writable Area
Customer Area Checksum
Vendor Specific Area
Auto-configure Size (N)
Auto-configure Pointer (S)
Vendor Specific Checksum
SETTING
2
C Device Address (NB LSB is a read/write flag). Upper bits are assumed to be ‘1010’b, Device address will be
Table 22. XENPAK NVR REGISTER COPY
DESCRIPTION
000’h
1’b
1’b
1’b
001’b
SUGGESTED
BBT3821
VALUE
(3)
(4)
(5)
(6)
(1)
(1)
R/W
R/W
R/W
R/W
R/W
R/W
(3)
Xenpak = 0008BE
XPAK = 000ACB
X2 = 000C64
Σ
Σ
See page 16
(or 00 or FF’h)
Σ
SUGGESTED VALUE
(1.8007:807C)
(1.807E:80AC)
(1.80AE:8105)
DOM Control/Status Register 1.A100’h
DOM Implemented
WDM Lane-by-Lane DOM; registers 1.A0C0:A0FF’h
valid
Laser Bias Scale Factor
I
2
C Device Address of (initial) DOM IC
2
C NVR space.
DESCRIPTION
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
(2)
(2)
(2)
(2)
(2)
(2)
(2)
Mirrored to 1.14:15
(1.E:F’h)
Table 23
See Table 92
(2)
DETAILS