参数资料
| 型号： | CYW305OXCT |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK W305 SOLANO 56SSOP |
| 标准包装： | 1,000 |
| 类型： | 时钟/频率发生器 |
| PLL： | 是 |
| 主要目的： | Intel CPU 服务器 |
| 输入： | 晶体 |
| 输出： | 时钟 |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:15 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 200MHz |
| 电源电压： | 2.375 V ~ 3.465 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-BSSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 56-SSOP |
| 包装： | 带卷 (TR) |
W305B
...................... Document #: 38-07262 Rev. *B Page 10 of 20
Bit 4
RST_EN_WD
0
This bit will enable the generation of a Reset pulse when a watchdog timer
time-out occurs.
0 = Disabled
1 = Enabled
Bit 3
RST_EN_FC
0
This bit will enable the generation of a Reset pulse after a frequency change
occurs.
0 = Disabled
1 = Enabled
Bit 2
WD_TO_STATUS
0
Watchdog Timer Time-out Status bit
0 = No time-out occurs (READ); Ignore (WRITE)
1 = time-out occurred (READ); Clear WD_TO_STATUS (WRITE)
Bit 1
WD_EN
0
0 = Stop and re-load Watchdog timer. Unlock W305B from recovery frequency
mode.
1 = Enable Watchdog timer. It will start counting down after a frequency change
occurs.
Note: W305B will generate system reset, re-load a recovery frequency, and
lock itself into a recovery frequency mode after a Watchdog timer time-out
occurs. Under recovery frequency mode, W305B will not respond to any attempt
to change output frequency via the SMBus control bytes. System software can
unlock W305B from its recovery frequency mode by clearing the WD_EN bit.
Bit 0
Reserved
0
Reserved
Byte 10: Skew Control Register
Bit
Name
Default
Description
Bit 7
CPU_Skew2
0
CPU skew control
000 = Normal
001 = –150 ps
010 = –300 ps
011 = –450 ps
100 = +150 ps
101 = +300 ps
110 = +450 ps
111 = +600 ps
Bit 6
CPU_Skew1
0
Bit 5
CPU_Skew0
0
Bit 4
SDRAM_Skew2
0
SDRAM skew control
000 = Normal
001 = –150 ps
010 = –300 ps
011 = –450 ps
100 = +150 ps
101 = +300 ps
110 = +450 ps
111 = +600 ps
Bit 3
SDRAM_Skew1
0
Bit 2
SDRAM_Skew0
0
Bit 1
AGP_Skew1
0
AGP skew control
00 = Normal
01 = –150ps
10 = +150ps
11 = +300ps
Bit 0
AGP_Skew0
0
Byte 9: System RESET and Watchdog Timer Register (continued)
Bit
Name
Default
Pin Description
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