參數(shù)資料
型號(hào): DS2149QN+
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 5/32頁(yè)
文件大?。?/td> 0K
描述: IC LIU T1/J1 5V 28-PLCC
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 37
類型: 線路接口裝置(LIU)
規(guī)程: T1/J1
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 28-LCC(J 形引線)
供應(yīng)商設(shè)備封裝: 28-PLCC(11.51x11.51)
包裝: 管件
DS2149
13 of 32
SR (B010101): Status Register
MSb
LSb
DFMO
QRSS
AIS
NLOOP
RCL
SYMBOL
POSITION
FUNCTION
SR.7
SR.6
DFMO
SR.5
Set when transmitter detects open circuit.
SR.4
QRSS
SR.3
Set when the QRSS pattern is present at the receiver.
AIS
SR.2
Set when the AIS pattern is present at the receiver.
NLOOP
SR.1
Set when the in-band loop-up code is present at the receiver.
RCL
SR.0
Set when receiver has detected consecutive s set forth by CR4.2.
Cleared when the receiver detects 14 1s in a window of 112 clock
cycles.
IR (B010110): Information Register
MSb
LSb
RL3
RL2
RL1
RL0
LUP
LDN
TSCD
LOTC
SYMBOL
POSITION
FUNCTION
RL3
IR.7
RL2
IR.6
RL1
IR.5
RL0
IR.4
LUP
IR.3
Set when in-band loop-up code is being received.
LDN
IR.2
Set when in-band loop-down code is being received.
TSCD
IR.1
Set when transmitter detects a short circuit.
LOTC
IR.0
Set when TCLK has not transitioned for approximately 5
ms.
Receive Level Indication: RL0 is the LSB and RL3 is the MSB of a 4-bit nibble that is used to indicate the inbound
signal strength. Convert the binary to decimal and multiply by -2.5dB. The result indicates the approximate
attenuation seen at the receiver inputs.
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