參數(shù)資料
型號: AD9548BCPZ
廠商: Analog Devices Inc
文件頁數(shù): 81/112頁
文件大?。?/td> 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
AD9548
Data Sheet
Rev. E | Page 70 of 112
REGISTER MAP BIT DESCRIPTIONS
SERIAL PORT CONFIGURATION (REGISTER 0x0000 TO REGISTER 0x0005)
Table 37. Serial Configuration
Address
Bits
Bit Name
Description
0x0000
[7]
Unidirectional
Select SPI port SDO pin operating mode.
0 (default) = 3-wire.
1 = 4-wire (SDO pin enabled).
[6]
LSB first
Bit order for SPI port.
0 (default) = most significant bit and byte first.
1 = least significant bit and byte first.
[5]
Soft reset
Device reset (invokes an EEPROM download if M[7:3] ≠ 0).
0 (default) = normal operation.
1 = reset.
[4]
Long instruction
16-bit mode (the only mode supported by the device). This bit is read only and reads back as Logic
1.
[0]
Unused
Table 38. Reserved Register
Address
Bits
Bit Name
Description
0x0001
[7:0]
Unused
Table 39. Silicon Revision Level (Read Only)
Address
Bits
Bit Name
Description
0x0002
[7:0]
Reserved
Default = 0xC6 = 0b11000110
Table 40. Device ID (Read Only)
Address
Bits
Bit Name
Description
0x0003
[7:0]
Reserved
Default = 0x48 = 0b01001000
Table 41. Register Readback Control
Address
Bits
Bit Name
Description
0x0004
[7:1]
Unused
0
Read buffer register
For buffered registers, serial port readback reads from actual (active) registers instead
of from the buffer.
0 (default) = reads values currently applied to the internal logic of the device.
1 = reads buffered values that take effect on the next assertion of the I/O update.
Table 42. Soft I/O Update
Address
Bits
Bit Name
Description
0x0005
[7:1]
Unused
0
I/O update
Writing a 1 to this bit transfers the data in the serial I/O buffer registers to the
internal control registers of the device. This is an autoclearing bit.
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