THREE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER XRT72L53 PRELIMINARY REV" />
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� XRT72L53IB-F
寤犲晢锛� Exar Corporation
鏂囦欢闋�(y猫)鏁�(sh霉)锛� 42/467闋�(y猫)
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC FRAMER DS3/E3 3CH 272PBGA
鐢�(ch菐n)鍝佽畩鍖栭€氬憡锛� XRT72Lx Series Obsolescence 02/May/2012
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 40
鎺у埗鍣ㄩ鍨嬶細 DS3/E3 瑾�(di脿o)骞€鍣�
闆绘簮闆诲锛� 3.3V
闆绘祦 - 闆绘簮锛� 190mA
宸ヤ綔婧害锛� -40°C ~ 85°C
瀹夎椤炲瀷锛� 琛ㄩ潰璨艰
灏佽/澶栨锛� 272-BBGA
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 272-PBGA锛�27x27锛�
鍖呰锛� 鎵樼洡
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�(y猫)绗�465闋�(y猫)绗�466闋�(y猫)绗�467闋�(y猫)
THREE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER XRT72L53
PRELIMINARY
REV. P1.1.7
136
Once the Microprocessor/Microcontroller has read
the register that corresponds to the interrupting
source within the Framer, the following things will
happen.
1. The Asserted Interrupt Status bit-fields within this
register will be reset upon read.
2. The Asserted bit-field, within the Block Interrupt
Status register will be reset.
3. The Framer device will negate the INT (Interrupt
Request) output pin, by driving this output pin
"High鈥�.
2.7.1
Automatic Reset of Interrupt Enable Bits
Occasionally, the user鈥檚 system (which includes the
Framer) may experience a fault condition, such that a
Framer Interrupt Condition will continuously exist. If
this particular interrupt condition has been enabled
(within the Framer IC) then the Framer will generate
an interrupt request to the MIcroprocessor/Microcon-
troller. Afterwards, the Microprocessor/Microcontroller
will attempt to service this interrupt by reading the
Block Interrupt Status register and the subsequent
source level interrupt status registers. Additionally,
the Microprocessor/Microcontroller will attempt to
perform some system-related tasks in order to try to
resolve those conditions causing the interrupt. After
the Microprocessor/Microcontroller has attempted all
of these things, the Framer IC will negate the INT out-
put pin. However, because the system fault still re-
mains, the conditions causing the Framer to issue this
interrupt request, also still exists. Consequently, the
Framer will generate another interrupt request, which
forces the Microprocessor/Microcontroller to once
again attempt to service this interrupt. This phenome-
TABLE 10: INTERRUPT SERVICE ROUTINE GUIDE (FOR DS3 APPLICATIONS)
INTERRUPTING
FUNCTIONAL BLOCK
THE NEXT REGISTERS TO BE READ DURING THE INTERRUPT SERVICE
ROUTINE
REGISTER ADDRESS
Receive Section
RxDS3 Interrupt Status Register
0 x 013
RxDS3 FEAC Interrupt Enable/Status Register
0 x 17
RxDS3 LAPD Control Register
0 x 18
Transmit Section
TxDS3 FEAC Configuration and Status Register
0 x 31
TxDS3 LAPD Status/Interrupt Register
0 x 34
TABLE 11: INTERRUPT SERVICE ROUTINE GUIDE (FOR E3, ITU-T G.832 APPLICATIONS)
INTERRUPTING
FUNCTIONAL BLOCK
THE NEXT REGISTERS TO BE READ DURING THE INTERRUPT SERVICE
ROUTINE
REGISTER ADDRESS
Receive Section
RxE3 Interrupt Status Register - 1
0 x 014
RxE3 Interrupt Status Register - 2
0 x 15
RxE3 LAPD Control Register
0 x 18
Transmit Section
TxE3 LAPD Status and Interrupt Register
0 x 34
TABLE 12: INTERRUPT SERVICE ROUTINE GUIDE (FOR E3, ITU-T G.751 APPLICATIONS)
INTERRUPTING
FUNCTIONAL BLOCK
THE NEXT REGISTERS TO BE READ DURING THE INTERRUPT SERVICE
ROUTINE
REGISTER ADDRESS
Receive Section
RxE3 Interrupt Status Register - 1
0 x 014
RxE3 Interrupt Status Register - 2
0 x 15
RxE3 LAPD Control Register
0 x 18
Transmit Section
TxE3 LAPD Status and Interrupt Register
0 x 34
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
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XRT72L54 鍒堕€犲晢:EXAR 鍒堕€犲晢鍏ㄧū:EXAR 鍔熻兘鎻忚堪:FOUR CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
XRT72L54ES-PCI 鍔熻兘鎻忚堪:缍�(w菐ng)绲�(lu貌)鎺у埗鍣ㄨ垏铏曠悊鍣� IC with T73LC04A+T71D04 RoHS:鍚� 鍒堕€犲晢:Micrel 鐢�(ch菐n)鍝�:Controller Area Network (CAN) 鏀剁櫦(f膩)鍣ㄦ暩(sh霉)閲�: 鏁�(sh霉)鎿�(j霉)閫熺巼: 闆绘簮闆绘祦锛堟渶澶у€硷級:595 mA 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:PBGA-400 灏佽:Tray
XRT72L54IB 鍔熻兘鎻忚堪:缍�(w菐ng)绲�(lu貌)鎺у埗鍣ㄨ垏铏曠悊鍣� IC RoHS:鍚� 鍒堕€犲晢:Micrel 鐢�(ch菐n)鍝�:Controller Area Network (CAN) 鏀剁櫦(f膩)鍣ㄦ暩(sh霉)閲�: 鏁�(sh霉)鎿�(j霉)閫熺巼: 闆绘簮闆绘祦锛堟渶澶у€硷級:595 mA 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:PBGA-400 灏佽:Tray
XRT72L56 鍒堕€犲晢:EXAR 鍒堕€犲晢鍏ㄧū:EXAR 鍔熻兘鎻忚堪:SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
XRT72L56ES-PCI 鍔熻兘鎻忚堪:缍�(w菐ng)绲�(lu貌)鎺у埗鍣ㄨ垏铏曠悊鍣� IC RoHS:鍚� 鍒堕€犲晢:Micrel 鐢�(ch菐n)鍝�:Controller Area Network (CAN) 鏀剁櫦(f膩)鍣ㄦ暩(sh霉)閲�: 鏁�(sh霉)鎿�(j霉)閫熺巼: 闆绘簮闆绘祦锛堟渶澶у€硷級:595 mA 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:PBGA-400 灏佽:Tray