參數(shù)資料
型號： DS21FT42
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù)： 46/145頁
文件大?。?/td> 466K
代理商： DS21FT42
DALLAS SEMICONDUCTOR
DS21FF42/DS21FT42
101899
/1236
The interrupts caused by alarms in SR1 (namely RYEL, RCL, RBL, RLOS and LOTC) act
differently than the interrupts caused by events in SR1 and SR2 (namely LUP, LDN,
RSLIP, RMF, TMF, SEC, RFDL, TFDL, RMTCH, RAF, and RSC) and HIMR. The
alarm caused interrupts will force the INT* pin low whenever the alarm changes state (i.e.,
the alarm goes active or inactive according to the set/clear criteria in Table 11-1). The INT*
pin will be allowed to return high (if no other interrupts are present) when the user reads the
alarm bit that caused the interrupt to occur even if the alarm is still present.
The event caused interrupts will force the INT* pin low when the event occurs. The INT*
pin will be allowed to return high (if no other interrupts are present) when the user reads the
event bit that caused the interrupt to occur.
ISR: INTERRUPT STATUS REGISTER
(Any address from A0H to FFH)
(MSB)
F3HDLC
(LSB)
F0SR
F3SR
F2HDLC
F2SR
F1HDLC
F1SR
F0HDLC
SYMBOL
POSITION
NAME AND DESCRIPTION
F3HDLC
ISR.7
FRAMER 3 HDLC CONTROLLER INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
FRAMER 3 SR1 or SR2 INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
FRAMER 2 HDLC CONTROLLER INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
FRAMER 2 SR1 or SR2 INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
FRAMER 1 HDLC CONTROLLER INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
FRAMER 1 SR1 or SR2 INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
FRAMER 0 HDLC CONTROLLER INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
FRAMER 0 SR1 or SR2 INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
F3SR
ISR.6
F2HDLC
ISR.5
F2SR
ISR.4
F1HDLC
ISR.3
F1SR
ISR.2
F0HDLC
ISR.1
F0SR
ISR.0
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