ZL50022GAC ZARLINK [Zarlink Semiconductor Inc], ZL50022GAC Datasheet - Page 17
ZL50022GAC
Manufacturer Part Number
ZL50022GAC
Description
Enhanced 4 K Digital Switch with Stratum 4E DPLL
Manufacturer
ZARLINK [Zarlink Semiconductor Inc]
Datasheet
1.ZL50022GAC.pdf
(121 pages)
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PBGA Pin
Number
B10
B11
LQFP Pin
Number
155
154
Pin Name
CKi
FPi
Zarlink Semiconductor Inc.
ST-BUS/GCI-Bus
Schmitt-Triggered Input)
This pin accepts the frame pulse which stays active for 61 ns,
122 ns or 244 ns at the frame boundary. The frame pulse
frequency is 8 kHz. The frame pulse associated with the highest
input or output data rate must be applied to this pin when the
device is operating in Divided Slave mode or Master mode. The
exception is if the device is operating in Master mode with
loopback (i.e., CKi_LP is set in the Control Register). In that case,
this input must be tied high or low externally. When the device is
operating in Multiplied Slave mode, the frame pulse associated
with the highest input data rate must be applied to this pin. For all
modes (except Master mode with loopback), if the data rate is
16.384 Mbps, a 61 ns wide frame pulse must be used. By default,
the device accepts a negative frame pulse in ST-BUS format, but it
can accept a positive frame pulse instead if the FPINP bit is set
high in the Control Register (CR). It can accept a GCI-formatted
frame pulse by programming the FPINPOS bit in the Control
Register (CR) to high.
ST-BUS/GCI-Bus Clock Input (5 V-Tolerant Schmitt Triggered
The Input)
This pin accepts a 4.096 MHz, 8.192 MHz or 16.384 MHz clock.
The clock frequency associated with twice the highest input or
output data rate must be applied to this pin when the device is
operating in either Divided Slave mode or Master mode. The
exception is if the device is operating in Master mode with
loopback (i.e., CKi_LP is set in the Control Register). In that case,
this input must be tied high or low externally. The clock frequency
associated with twice the highest input data rate must be applied
to this pin when the device is operating in Multiplied Slave mode.
In all modes of operation (except Master mode with loopback),
when data is running at 16.384 Mbps, a 16.384 MHz clock must be
used. By default, the clock falling edge defines the input frame
boundary, but the device allows the clock rising edge to define the
frame boundary by programming the CKINP bit in the Control
Register (CR).
ZL50022
17
Frame
Description
Pulse
Input
(5 V-Tolerant
Data Sheet
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