SI5376 Datasheet, PDF (32/66 Pages) Silicon Laboratories – 4-PLL ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR

Si5376
Register 21.
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
Write 0
Write 0
CK1_ACTV_PIN CKSEL_ PIN
Type
W
W
R
R
R
R
R/W
R/W
Reset value = 1111 1111
Bit
Name
Function
7:6
Write 0
Write zero.
5:2
Reserved
1 CK1_ACTV_PIN CK1_ACTV_PIN.
The CK1_ACTV_REG status bit can be reflected to the CS_CA output pin using the
CK1_ACTV_PIN enable function. CK1_ACTV_PIN is of consequence only when pin
controlled clock selection is being used.
0: CS_CA output pin tristated.
1: Clock Active status reflected to output pin.
0
CKSEL_PIN CKSEL_PIN.
If manual clock selection is used, clock selection can be controlled via the
CKSEL_REG[1:0] register bits or the CS_CA input pin. This bit is only active when
AUTOSEL_REG = Manual.
0: CS_CA pin ignored. CKSEL_REG[1:0] register bits control clock selection.
1: CS_CA input pin controls clock selection.
32
Rev. 1.0