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參數(shù)資料
| 型號(hào)： | BBT3821-JH |
| 廠商： | Intersil |
| 文件頁數(shù)： | 19/75頁 |
| 文件大小： | 0K |
| 描述： | IC RE-TIMER OCTAL 192-BGA |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 類型： | 時(shí)鐘和數(shù)據(jù)恢復(fù)（CDR），多路復(fù)用器 |
| PLL： | 無 |
| 輸入： | CML |
| 輸出： | CML，CMOS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 8:8 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 3.1875Gbps |
| 電源電壓： | 1.425 V ~ 2.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 192-EBGA |
| 供應(yīng)商設(shè)備封裝： | 192-EBGA-B（17x17） |
| 包裝： | 托盤 |
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Note (1): Only register values operated on by the BBT3821 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 BBT3821 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)
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)
(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
A
0 = 2
A
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)
BBT3821
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