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参数资料
| 型号： | CY28317PVXC-2T |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 17/20页 |
| 文件大小： | 0K |
| 描述： | IC CLK FTG VIA PL/E133T 48SSOP |
| 标准包装： | 1,000 |
| 类型： | 时钟/频率发生器 |
| PLL： | 是 |
| 输入： | 晶体 |
| 输出： | HCSL，LVCMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:20 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 248MHz |
| 电源电压： | 3.135 V ~ 3.465 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-BSSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 48-SSOP |
| 包装： | 带卷 (TR) |
CY28317-2
....................... Document #: 38-07094 Rev. *B Page 6 of 20
CY28317-2 Serial Configuration Map
1. The serial bits will be read by the clock driver in the following
order:
Byte 0 – Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte 1 – Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte N – Bits 7, 6, 5, 4, 3, 2, 1, 0
2. All unused register bits (reserved and N/A) should be
written to a “0” level.
3. All register bits labeled “Write with 1" must be written to one
during initialization.
Byte 0: Control Register 0
Bit
Pin#
Name
Default
Description
Bit 7
–
Spread Select1
0
See definition in Bit[0]
Bit 6
–
SEL2
0
See Table 6
Bit 5
–
SEL1
0
See Table 6
Bit 4
–
SEL0
0
See Table 6
Bit 3
–
FS_Override
0
0 = Select operating frequency by FS[4:0] input pins
1 = Select operating frequency by SEL[4:0] settings
Bit 2
–
SEL4
0
See Table 6
Bit 1
–
SEL3
0
See Table 6
Bit 0
–
Spread Select0
0
‘00’ = OFF
‘01’ = –0.5%
‘10’ = ±0.5%
‘11’ = ±0.25%
Byte 1: Control Register 1
Bit
Pin#
Name
Default
Description
Bit 7
10
Latched FS4 input
X
Latched FS[4:0] inputs. These bits are read-only.
Bit 6
11
Latched FS3 input
X
Bit 5
2
Latched FS2 input
X
Bit 4
26
Latched FS1 input
X
Bit 3
27
Latched FS0 input
X
Bit 2
48
CPU0
1
(Active/Inactive)
Bit 1
47
CPU1
1
(Active/Inactive)
Bit 0
44, 43
CPUT, CPUC
1
(Active/Inactive)
Byte 2: Control Register 2
Bit
Pin#
Name
Default
Description
Bit 7
39
SDRAM6
1
(Active/Inactive)
Bit 6
10
PCI0_F
1
(Active/Inactive)
Bit 5
17
PCI6
1
(Active/Inactive)
Bit 4
16
PCI5
1
(Active/Inactive)
Bit 3
15
PCI4
1
(Active/Inactive)
Bit 2
14
PCI3
1
(Active/Inactive)
Bit 1
13
PCI2
1
(Active/Inactive)
Bit 0
11
PCI1
1
(Active/Inactive)
Byte 3: Control Register 3
Bit
Pin#
Name
Default
Description
Bit 7
–
Reserved
1
Reserved
Bit 6
–
SEL_48MHz
0
0 = 24 MHz
1 = 48 MHz
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