TABLE
參數(shù)資料
型號: XRT91L31IQTR-F
廠商: Exar Corporation
文件頁數(shù): 38/41頁
文件大?。?/td> 0K
描述: IC TXRX SONET/SDH 8BIT 64QFP
標(biāo)準(zhǔn)包裝: 1,000
類型: 收發(fā)器,多路復(fù)用器
PLL:
主要目的: 以太網(wǎng),SONET/SDH
輸入: LVCMOS,LVPECL,LVTTL
輸出: LVCMOS,LVPECL,LVTTL
電路數(shù): 1
差分 - 輸入:輸出: 是/是
頻率 - 最大: 622.08MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-FQFP
供應(yīng)商設(shè)備封裝: 64-PQFP(10x10)
包裝: 帶卷 (TR)
XRT91L31
6
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
REV. 1.0.2
PIN DESCRIPTIONS
TABLE 2: HARDWARE CONTROL
PIN DESCRIPTION
NAME
LEVEL
TYPE
PIN
DESCRIPTION
RESET
LVTTL,
LVCMOS
I
1
Master Reset Input
Active "High." When this pin is pulled "High" , the internal state
machines are set to their default state.
"Low" = Normal Operation
"High" = Master Hardware Reset
STS12/STS3
LVTTL,
LVCMOS
I
59
Data Rate Selection
Selects SONET/SDH transmission and reception speed rate
"Low" = STS-3/STM-1 155.52 Mbps
"High" = STS-12/STM-4 622.08 Mbps
CMUFREQSEL
LVTTL,
LVCMOS
I
3
Clock Multiplier Unit Reference Frequency Select
This pin is used to select the frequency of the REFCLKP/N or
TTLREFCLK input to the CMU.
"Low" = 77.76 MHz reference clock
"High" = 19.44 MHz reference
clock
NOTE: REFCLKP/N or TTLREFCLK input should be generated
from an LVPECL/LVTTL crystal oscillator which has a
frequency accuracy better than 20ppm in order for the
transmitted data rate frequency to have the necessary
accuracy required for SONET systems..
CDR_BW/VDD
LVTTL,
LVCMOS
I
15
CDR Bandwidth Select
This pin is used to select the CDR Bandwidth
"Low" = Narrow BW, (Meets SONET jitter transfer requirement)
"High" (VDD) = Wide Band Width.
CMU-
FREQSEL
STS12/
STS3
REFCLKP/N OR
TTLREFCLK
REFERENCE
FREQUENCY
DATA RATE
00
77.76 MHz
STS-3/STM-1
155.52 Mbps
0
1
77.76 MHz
STS-12/STM-4
622.08 Mbps
10
19.44 MHz
STS-3/STM-1
155.52 Mbps
1
19.44 MHz
STS-12/STM-4
622.08 Mbps
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