STCD2400 Datasheet, PDF (8/39 Pages) STMicroelectronics – Multichannel clock distribution circuit

Device overview
STCD22x0, STCD23x0, STCD24x0
Figure 4.
Hardware hookup (master clock enable active high)
V_CC
Enable
C
control
C
C
XO ^{VDD EN}
BYP
VTCXO
EN4
CLK4
STCD24x0
EN3
CLK3
MC_REQ
MCLK
V_CC
OPT1
OPT2
EN2
CLK2
EN1
CLK1
Clock #4 output
Clock #3 output
Clock #2 output
Clock #1 output
Figure 5. Connections diagram Flip Chip 12-bump (STCD22x0, 2-channel)
ai14028b
3
CLK1
EN1
EN2
CLK2
3
CLK2
EN2
EN1
CLK1
2
BYP
GND
MCREQ
OPT1
2
OPT1
MCREQ
GND
BYP
1
Note:
VCC
VTCXO
MCLK
OPT2
1
OPT2
Top view
MCLK
VTCXO
VCC
Bottom view
A
B
C
D
D
C
B
A
ai14017
OPT1 is used to configure EN1 polarity. Connect OPT1 to V_CC to configure EN1 active high
or connect OPT1 to GND to configure EN1 active low. In the same way OPT2 is used to
configure EN2.
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Doc ID 15400 Rev 2