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參數(shù)資料
| 型號(hào)： | IBM42S12LNYAA20 |
| 廠商： | IBM Microeletronics |
| 英文描述： | 1250 MBd Gigabit Interface Converter(1250 MBd 吉位接口轉(zhuǎn)換器) |
| 中文描述： | 1250 MBd的千兆位接口轉(zhuǎn)換器（1250 MBd的吉位接口轉(zhuǎn)換器） |
| 文件頁數(shù)： | 5/35頁 |
| 文件大?。?/td> | 490K |
| 代理商： | IBM42S12LNYAA20 |
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IBM42S10LNYAA20
IBM42S12LNYAA20
IBM42S12SNYAA20
IBM42S10LNNAA20
1063/1250MBd Gigabit Interface Converter
IBM42S10SNNAA20
IBM42S10SNYAA20
GBIC.02
04/27/99
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 5 of 34
Output Signal Definitions
MOD_DEF(0:2)
Pins 4, 5, and 6 define the data rate at which the installed GBIC is operating, as shown in the following table.
MOD_DEF(0:2) Serial ID Implementations
In GBIC-1063NS, GBIC-1063NS-LW, GBIC-1250NS, and GBIC-1250NS-LW, a two-wire serial EEPROM is
used to hold 128 bytes of information that describe some of the capabilities, standard interfaces, manufac-
turer, and other information relevant to the product. The information stored in the EEPROM is protected so
that it cannot be changed by the user. Tables describing the specific addresses and values of the serial ID
data are included in Serial ID Data and Descriptions on page 22. Operation of the serial ID function is
described in Serial Module Definition Protocol (Serial ID) on page 10. Signal timings necessary for proper
operation of the serial ID function are shown in Serial ID Timing Specifications on page 21.
The serial ID module requires both serial clock
(SCL) and serial data I/O (SDA) connections. These
signals are required to have pull up resistors (4.7k
is the recommended value; however, a smaller
value may be needed in order to meet the serial ID
’
s
rise and fall time requirements). The following list
and figure show the necessary connections from an
interface to a GBIC to ensure the capability of read-
ing the serial ID data.
MOD_DEF(0): Logic Low
MOD_DEF(1): SCL
MOD_DEF(2): SDA
The serial clock (SCL) and the serial data (SDA)
lines appear as NC to the host system upon initial
power up.
Module Pin Definitions
Mode_Def (0)
Pin 4
Mod_Def (1)
Pin 5
Mod_Def (2)
Pin 6
Interpretation by Host
0
0
0
GBIC-1250N
0
1
0
GBIC-1063N
0
0
1
GBIC-1250N-LW
1
0
0
GBIC-1063N-LW
0
1
1
GBIC-1063NS, GBIC-1063NS-LW,
GBIC-1250NS, or GBIC-1250NS-LW
with Serial ID
Expected Connections to GBIC MOD_DEF Pins
Interface
MOD_DEF(0)
MOD_DEF(1)
MOD_DEF(2)
SCL
SDA
Host
GBIC
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