zl50051gag2 Zarlink Semiconductor, zl50051gag2 Datasheet - Page 10

• Manufacturer Part Number: zl50051gag2
• Description: 8 K Channel Digital Switch With High Jitter Tolerance, Single Rate 8 Or 16 Mbps And 64 Input And 64 Output Streams
• Manufacturer: Zarlink Semiconductor

Pin Description
Device Timing
Pin Name
FP8o
C16o
FP8i
C8o
C8i
Coordinates
ZL50053
Package
(256 pin
LQFP)
NA
37
43
41
42
Coordinates
ZL50051
Package
(256 ball
PBGA)
R11
R10
P10
T10
T11
Zarlink Semiconductor Inc.
ZL50051/3
Master Clock (5 V Tolerant Schmitt-Triggered Input)
This pin accepts an 8.192 MHz clock. The internal frame
boundary is aligned with the clock falling or rising edge, as
controlled by the C8IPOL bit in the Control Register. Input data
on both the Backplane and Local sides (BSTi0-31 and
LSTi0-31) must be aligned to this clock and the accompanying
input frame pulse, FP8i.
Frame Pulse Input (5 V Tolerant Schmitt-Triggered Input)
When the Frame Pulse Width bit (FPW) of the Control
Register is LOW (default), this pin accepts a 122 ns-wide
frame pulse. When the FPW bit is HIGH, this pin accepts a
244 ns-wide frame pulse. The device will automatically detect
whether an ST-BUS or GCI-Bus style frame pulse is applied.
Input data on both the Backplane and Local sides (BSTi0-31
and LSTi0-31) must be aligned to this frame pulse and the
accompanying input clock, C8i.
C8o Output Clock (5 V Tolerant Three-state Output)
This pin outputs an 8.192 MHz clock generated within the
device. The clock falling edge or rising edge is aligned with the
output frame boundary presented on FP8o; this edge polarity
alignment is controlled by the COPOL bit of the Control
Register. Output data on both the Backplane and Local sides
(BSTo0-31 and LSTo0-31) will be aligned to this clock and the
accompanying output frame pulse, FP8o.
Frame Pulse Output (5 V Tolerant Three-state Output)
When the Frame Pulse Width bit (FPW) of the Control
Register is LOW (default), this pin outputs a 122 ns-wide
frame pulse. When the FPW bit is HIGH, this pin outputs a
244 ns-wide frame pulse. The frame pulse, running at 8 kHz
rate, will have the same format (ST-BUS or GCI-Bus) as the
input frame pulse (FP8i). Output data on both the Backplane
and Local sides (BSTo0-31 and LSTo0-31) will be aligned to
this frame pulse and the accompanying output clock, C8o.
C16o Output Clock (5 V Tolerant Three-state Output)
This pin outputs a 16.384 MHz clock generated within the
device. The clock falling edge or rising edge is aligned with the
output frame boundary presented on FP16o; this edge polarity
alignment is controlled by the COPOL bit of the Control
Register. Output data on both the Backplane and Local sides
(BSTo0-31 and LSTo0-31) will be aligned to this clock and the
accompanying output frame pulse, FP16o.
10
Description
Data Sheet