COLD S" />
參數(shù)資料
型號(hào)： XR17V252IM-0A-EVB
廠商： Exar Corporation
文件頁數(shù)： 3/69頁
文件大?。?/td> 0K
描述： EVAL BOARD FOR XR17V252 100TQFP
標(biāo)準(zhǔn)包裝： 1
系列： *
XR17V252
11
REV. 1.0.2
66 MHZ PCI BUS DUAL UART WITH POWER MANAGEMENT SUPPORT
D3
COLD STATE
The V252 enters the state when power is removed from the device. All context is lost in this state and the V252
does not support PME# in this state. When power is restored, PCI RST# must be asserted and the V252 will
return to the D0 Uninitialized state with a full PCI 3.0 compliant power-on reset sequence. The V252 will set all
its registers and outputs to the power-on defaults just as at initial power up. The system software must then
fully initialize and re-configure the V252 to place it in the D0 Active state.
1.3
Special Read/Write Register to store User Information
This 32-bit register can be used to store user information and is writable only via the EEPROM. This is
implemented at an offset of 0x48 in the PCI Configuration Space immediately following the Power
Management Registers. This register can be used to store application-specific information which may be used
by the device driver to initialize the device appropriately.
NOTE: EWR=Read/Write from external EEPROM.
FIGURE 4. POWER STATE TRANSITIONS OF THE XR17V252
TABLE 3: SPECIAL READ/WRITE REGISTER
ADDRESS
OFFSET
BITS
TYPE
DESCRIPTION
RESET VALUE
(HEX)
0x48
31:0
EWR
User Information Writable only through EEPROM
0x00000000
D0
Uninitialized
D3
hot
D3
cold
D0
Active
Power on +
PCI RST#
Power on +
PCI RST#
VCC Removed
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17V252IM-F 功能描述:UART 接口集成電路 66MHz Dual PCI UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR17V252IMTR-F 制造商:Exar Corporation 功能描述:UART 2-CH 64Byte FIFO 3.3V 100-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XR17V252IMTR-F
XR17V254 制造商:EXAR 制造商全稱:EXAR 功能描述:66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT
XR17V254_08 制造商:EXAR 制造商全稱:EXAR 功能描述:66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT
XR17V254IV 制造商:EXAR 制造商全稱:EXAR 功能描述:66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT
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