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參數(shù)資料
| 型號： | CY28317PVXC-2T |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 19/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLK FTG VIA PL/E133T 48SSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 時鐘/頻率發(fā)生器 |
| PLL： | 是 |
| 輸入： | 晶體 |
| 輸出： | HCSL，LVCMOS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:20 |
| 差分 - 輸入:輸出： | 無/是 |
| 頻率 - 最大： | 248MHz |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-BSSOP（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 48-SSOP |
| 包裝： | 帶卷 (TR) |
CY28317-2
....................... Document #: 38-07094 Rev. *B Page 8 of 20
Bit 5
WD_TIMER4
1
These bits store the time-out value of the Watchdog Timer. The scale of the
timer is determined by the prescaler.
The timer can support a value of 150 ms to 4.8 sec when the prescaler is set
to 150 ms. If the prescaler is set to 2.5 sec, it can support a value from 2.5 sec
to 80 sec.
When the Watchdog Timer reaches “0,” it will set the WD_TO_STATUS bit and
generate Reset if RST_EN_WD is enabled.
Bit 4
WD_TIMER3
1
Bit 3
WD_TIMER2
1
Bit 2
WD_TIMER1
1
Bit 1
WD_TIMER0
1
Bit 0
WD_PRE_SC
ALER
0
0 = 150 ms
1 = 2.5 sec
Byte 6: Watchdog Timer Register (continued)
Bit
Name
Default
Pin Description
Byte 7: Control Register 7
Bit
Pin#
Name
Default
Pin Description
Bit 7
–
Reserved
0
Reserved
Bit 6
25
24_48MHz_DRV
1
0 = Norm, 1 = High Drive
Bit 5
26
48MHz_DRV
1
0 = Norm, 1 = High Drive
Bit 4
–
Reserved
0
Reserved
Bit 3
–
Reserved
0
Reserved
Bit 2
–
Reserved
0
Reserved
Bit 1
–
Reserved
0
Reserved
Bit 0
–
Reserved
0
Reserved
Byte 8: Vendor ID and Revision ID Register (Read Only)
Bit
Name
Default
Pin Description
Bit 7
Revision_ID3
0
Revision ID bit[3]
Bit 6
Revision_ID2
0
Revision ID bit[2]
Bit 5
Revision_ID1
0
Revision ID bit[1]
Bit 4
Revision_ID0
0
Revision ID bit[0]
Bit 3
Vendor_ID3
1
Bit[3] of Cypress Semiconductor’s Vendor ID. This bit is read-only.
Bit 2
Vendor_ID2
0
Bit[2] of Cypress Semiconductor’s Vendor ID. This bit is read-only.
Bit 1
Vendor _ID1
0
Bit[1] of Cypress Semiconductor’s Vendor ID. This bit is read-only.
Bit 0
Vendor _ID0
0
Bit[0] of Cypress Semiconductor’s Vendor ID. This bit is read-only.
Byte 9: System RESET and Watchdog Timer Register
Bit
Name
Default
Pin Description
Bit 7
SDRAM_DRV
0
SDRAM clock output drive strength
0 = Normal
1 = High Drive
Bit 6
PCI_DRV
0
PCI clock output drive strength
0 = Normal
1 = High Drive
Bit 5
Reserved
0
Reserved
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
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