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AD9557/PCBZ датащи(PDF) 69 Page - Analog Devices

номер детали AD9557/PCBZ
подробное описание детали  Dual Input Multiservice
PDF  92 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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AD9557/PCBZ датащи(HTML) 69 Page - Analog Devices

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Data Sheet
AD9557
Rev. A | Page 69 of 92
Table 52. IRQ Mask for Reference Inputs
Address
Bits
Bit Name
Description
7
Reserved
Reserved
6
REFB validated
Enables IRQ for indicating that REFB has been validated
5
REFB fault cleared
Enables IRQ for indicating that REFB has been cleared of a previous fault
4
REFB fault
Enables IRQ for indicating that REFB has been faulted
3
Reserved
Reserved
2
REFA validated
Enables IRQ for indicating that REFA has been validated
1
REFA fault cleared
Enables IRQ for indicating that REFA has been cleared of a previous fault
0x020E
0
REFA fault
Enables IRQ for indicating that REFA has been faulted
0x020F
[7:0]
Reserved
Reserved
Table 53. Watchdog Timer 11
Address
Bits
Bit Name
Description
0x0210
[7:0]
Watchdog timer bits[7:0] Default: 0x00
0x0211
[7:0]
Watchdog timer (ms)
Watchdog timer bits[15:8] Default: 0x00
1Note that the watchdog timer is expressed in units of milliseconds (ms). The default value is 0 (disabled).
DPLL CONFIGURATION (REGISTER 0x0300 TO REGISTER 0x032E)
Table 54. Free Run Frequency Tuning Word1
Address
Bits
Bit Name
Description
0x0300
[7:0]
Free run frequency tuning word bits[7:0]; default: 0x11
0x0301
[7:0]
30-bit free run frequency tuning word
Free run frequency tuning word bits[15:8]; default: 0x15
0x0302
[7:0]
Free run frequency tuning word bits[23:9]; default: 0x64
0x0303
[7:6]
Reserved
Reserved
[5:0]
30-bit free run frequency word
Free run frequency tuning word bits[29:24]: default: 0x1B
1 Note that the default free run tuning word is 0x1B641511, which is used for 8 kHz/19.44 MHz = 622.08 MHz translation.
Table 55. Digital Oscillator Control
Address
Bits
Bit Name
Description
[7:6]
Reserved
Default: 00b
5
DCO 4-level output
0 (default) = DCO 3-level output mode
1 = enables DCO 4-level output mode
4
Reserved
Reserved (must be set to 1b)
0x0304
[3:0]
Reserved
Reserved (default: 0x0)



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