zl50060gag2 Zarlink Semiconductor, zl50060gag2 Datasheet - Page 33
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zl50060gag2
Manufacturer Part Number
zl50060gag2
Description
16 K Channel Digital Switch With High Jitter Tolerance, Per Stream Rate Conversion 2, 4, 8, 16 Or 32 Mbps , 64 Input And 64 Output Streams Pin Compatible With Mt90869
Manufacturer
Zarlink Semiconductor
Datasheet
1.ZL50060GAG2.pdf
(99 pages)
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4.0
The input pins, LORS and BORS, select whether the Local (LSTo0-31) and Backplane (BSTo0-31) output streams,
respectively, are set to high impedance at the output of the device itself, or are always driven (active HIGH or active
LOW). In the latter case (i.e., always driven), a high impedance state, if required on a per-channel basis, is invoked
through an external interface circuit controlled by the LCSTo0-3/BCSTo0-3 signals.
Setting LORS/BORS to a LOW state will configure the output streams, LSTo0-31/BSTo0-31, to transmit bi-state
channel data with per-channel high impedance determined by external circuits under the control of the
LCSTo0-3/BCSTo0-3 outputs.
Setting LORS/BORS to a HIGH state will configure the output streams, LSTo0-31/BSTo0-31, of the device to
invoke a high impedance output on a per-channel basis when required as controlled by the LE/BE bit.
The state of the LORS/BORS pin is detected and the device configured accordingly during a RESET operation,
e.g. following power-up. The LORS/BORS pin is an asynchronous input and is expected to be hard-wired for a
particular system application, although it may be driven under logic control if preferred.
The Local/Backplane output enable control in order of highest priority is: RESET, ODE, OSB, LE/BE.
Bit Advancement = -2
Bit Advancement = -4
Bit Advancement = -6
Bit Advancement = 0
Figure 12 - Local and Backplane Output Advancement Timing Diagram for Data Rate of 16 Mbps
(input pin)
Port high impedance Control
BSTo/LSTo0-31
BSTo/LSTo0-31
BSTo/LSTo0-31
BSTo/LSTo0-31
RESET
System Clock
131.072 MHz
0
0
1
1
1
1
1
(Default)
FP8o
(input pin)
Table 2 - Local and Backplane Output Enable Control Priority
ODE
Bit 1
X
X
0
0
1
1
1
Bit 1
Bit 1
Ch255
Bit 1
Register bit)
Ch255
(Control
Bit 0
OSB
Ch255
X
X
X
X
0
0
1
Bit 0
Ch255
Bit 0
Zarlink Semiconductor Inc.
Memory bit)
ZL50060/1
Connection
Backplane
Bit 0
(Local /
LE/BE
X
X
X
X
X
X
Bit 7
0
33
Bit 7
Bit Advancement, 0
Bit Advancement, -2
Bit Advancement, -4
Bit Advancement, -6
Bit 7
LORS/BORS
(input pin)
Bit 7
0
1
0
1
0
1
0
Bit 6
Bit 6
Ch0
Bit 6
LSTo0-31/
BSTo0-31
Ch0
HIGH
HIGH
HIGH
HIGH
HI-Z
HI-Z
HI-Z
Bit 6
Ch0
Bit 5
Ch0
Bit 5
Bit 5
LCSTo0-3/
BCSTo0-3
LOW
LOW
LOW
LOW
LOW
LOW
LOW
Data Sheet
Bit 5
Bit 4
Bit 4
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