参数资料
型号: SI5367/68-EVB
厂商: Silicon Laboratories Inc
文件页数: 27/80页
文件大小: 0K
描述: BOARD EVAL FOR SI5367/68
标准包装: 1
主要目的: 计时,时钟发生器
已用 IC / 零件: SI5367,SI5368
已供物品: 板,线缆,CD,文档
Si5367
Rev. 0.5
33
Reset value = 1111 1111
Register 21.
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
CK4_ACTV_PIN*
CK3_ACTV_PIN*
CK2_ACTV_PIN*
CK1_ACTV_PIN*
CKSEL_ PIN*
Type
R
Force 1
R
R/W
Bit
Name
Function
7:5
Reserved
4
CK4_ACTV_PIN CK4_ACTV_PIN.
If the CKSEL[1]/CK4_ACTV pin is functioning as the CK4_ACTV output (see
CKSEL[1]/CK4_ACTV pin description on CK4_ACTV), the CK4_ACTV_REG status
bit can be reflected to the CK4_ACTV output pin using the CK4_ACTV_PIN enable
function.
0: CK4_ACTV output pin tristated
1: CK4_ACTV status reflected to output pin.
3
CK3_ACTV_PIN CK3_ACTV_PIN.
If the CKSEL[0]/CK3_ACTV pin is functioning as the CK3_ACTV output (see
CKSEL[0]/CK3_ACTV pin description on CK3_ACTV), the CK3_ACTV_REG status
bit can be reflected to the CK3_ACTV output pin using the CK3_ACTV_PIN enable
function.
0: CK3_ACTV output pin tristated.
1: CK3_ACTV status reflected to output pin.
2
CK2_ACTV_PIN CK2_ACTV_PIN.
The CK2_ACTV_REG status bit can be reflected to the CK2_ACTV output pin using
the
CK2_ACTV_PIN enable function.
0: CK2_ACTV output pin tristated.
1: CK2_ACTV status reflected to output pin.
1
CK1_ACTV_PIN CK1_ACTV_PIN.
The CK1_ACTV_REG status bit can be reflected to the CK1_ACTV output pin using
the CK1_ACTV_PIN enable function.
0: CK1_ACTV output pin tristated.
1: CK1_ACTV status reflected to output pin.
0
CKSEL_PIN
CKSEL_PIN.
If manual clock selection is being used, clock selection can be controlled via the
CKSEL_REG[1:0] register bits or the CKSEL[1:0] input pins.
0: CKSEL pins ignored. CKSEL_REG[1:0] register bits control clock selection.
1: CKSEL[1:0] input pins controls clock selection.
*Note: The CKx_ACTV_PIN bits in this register are of consequence only when CKSEL_PIN is 0.
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