參數(shù)資料
型號: AD9548BCPZ
廠商: Analog Devices Inc
文件頁數(shù): 84/112頁
文件大小: 0K
描述: IC CLOCK GEN/SYNCHRONIZR 88LFCSP
產(chǎn)品變化通告: AD9548 Mask Change 20/Oct/2010
標(biāo)準(zhǔn)包裝: 1
類型: 時鐘/頻率發(fā)生器,同步器
PLL:
主要目的: 以太網(wǎng),SONET/SDH,Stratum
輸入: CMOS,LVDS,LVPECL
輸出: CMOS,LVDS,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 是/是
頻率 - 最大: 750kHz
電源電壓: 1.71 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 88-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 88-LFCSP-VQ(12x12)
包裝: 托盤
Data Sheet
AD9548
Rev. E | Page 73 of 112
Register 0x0209 to Register 0x0210—IRQ Mask
The IRQ mask register bits form a one-to-one correspondence with the bits of the IRQ monitor register (Address 0x0D02 to
Address 0x0D09). When set to Logic 1, the IRQ mask bits enable the corresponding IRQ monitor bits to indicate an IRQ event. The
default for all IRQ mask bits is Logic 0, which prevents the IRQ monitor from detecting any internal interrupts.
Table 50. IRQ Mask for SYSCLK
Address
Bits
Bit Name
Description
0x0209
[7:6]
Unused
[5]
SYSCLK unlocked
Enables IRQ for indicating a SYSCLK PLL state transition from locked to unlocked
[4]
SYSCLK locked
Enables IRQ for indicating a SYSCLK PLL state transition from unlocked to locked
[3:2]
Unused
[1]
SYSCLK Cal complete
Enables IRQ for indicating that SYSCLK calibration has completed
[0]
SYSCLK Cal started
Enables IRQ for indicating that SYSCLK calibration has begun
Table 51. IRQ Mask for Distribution Sync, Watchdog Timer, and EEPROM
Address
Bits
Bit Name
Description
0x020A
[7:4]
Unused
[3]
Distribution sync
Enables IRQ for indicating a distribution sync event
[2]
Watchdog timer
Enables IRQ for indicating expiration of the watchdog timer
[1]
EEPROM fault
Enables IRQ for indicating a fault during an EEPROM load or save operation
[0]
EEPROM complete
Enables IRQ for indicating successful completion of an EEPROM load or save
operation
Table 52. IRQ Mask for the Digital PLL
Address
Bits
Bit Name
Description
0x020B
[7]
Switching
Enables IRQ for indicating that the DPLL is switching to a new reference
[6]
Closed
Enables IRQ for indicating that the DPLL has entered closed-loop operation
[5]
Freerun
Enables IRQ for indicating that the DPLL has entered free-run mode
[4]
Holdover
Enables IRQ for indicating that the DPLL has entered holdover mode
[3]
Freq unlocked
Enables IRQ for indicating that the DPLL lost frequency lock
[2]
Freq locked
Enables IRQ for indicating that the DPLL has acquired frequency lock
[1]
Phase unlocked
Enables IRQ for indicating that the DPLL lost phase lock
[0]
Phase locked
Enables IRQ for indicating that the DPLL has acquired phase lock
Table 53. IRQ Mask for History Update, Frequency Limit, and Phase Slew Limit
Address
Bits
Bit Name
Description
0x020C
[7:5]
Unused
[4]
History updated
Enables IRQ for indicating the occurrence of a tuning word history update
[3]
Frequency unclamped
Enables IRQ for indicating a state transition frequency limiter from clamped to
unclamped
[2]
Frequency clamped
Enables IRQ for indicating a state transition of the frequency limiter from
unclamped to clamped
[1]
Phase slew unlimited
Enables IRQ for indicating a state transition of the phase slew limiter from slew
limiting to not slew limiting
[0]
Phase slew limited
Enables IRQ for indicating a state transition of the phase slew limiter from not slew
limiting to slew limiting
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