XRT94L43
219
SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
REV. 1.0.2
RXSTS-1 TOH/POH INTERFACE
PIN #
SIGNAL NAME
I/O
SIGNAL
TYPE
DESCRIPTION
A14
F20
K25
AD18
E16
H22
AA25
AC15
E19
K22
AD23
AA12
RxSTS1OHSel_0
RxSTS1OHSel_1
RxSTS1OHSel_2
RxSTS1OHSel_3
RxSTS1OHSel_4
RxSTS1OHSel_5
RxSTS1OHSel_6
RxSTS1OHSel_7
RxSTS1OHSel_8
RxSTS1OHSel_9
RxSTS1OHSel_10
RxSTS1OHSel_11
O
CMOS
Receive STS-1 TOH and POH Output Port - POH Data Indicator:
These output pins, along with RxSTS1OHClk_n,
RxSTS1OHFrame_n and RxSTS1OH_n function as the Receive
STS-1 TOH and POH Output Port.
These output pins indicate whether POH or TOH data is being output
via the RxSTS1OH_n output pins.
These output pins will toggle "High" coincident with the POH data as
it is being output via the RxSTS1OH_n output pins. Conversely,
these output pins will toggle "Low" coincident with the TOH data as it
is being output via the RxSTS1OH_n output pins.
NOTE:
These output pins are updated upon the falling edge of
RxSTS1OHClk_n. As a consequence, external circuitry,
receiving this data, should sample this data upon the rising
edge of RxSTS1OHClk_n.
D11
G22
U23
AD20
B15
J21
AA26
AF15
E17
K23
AF26
AD11
RxSTS1OH_0
RxSTS1OH_1
RxSTS1OH_2
RxSTS1OH_3
RxSTS1OH_4
RxSTS1OH_5
RxSTS1OH_6
RxSTS1OH_7
RxSTS1OH_8
RxSTS1OH_9
RxSTS1OH_10
RxSTS1OH_11
O
CMOS
Receive STS-1 TOH and POH Output Port - Output pin:
These output pins, along with RxSTS1OHSel_n, RxSTS1OHClk_n
and RxSTS1OHFrame_n function as the Receive STS-1 TOH and
POH Output Port.
Each bit, within the TOH and POH bytes (within the incoming STS-1
data stream) is updated upon the falling edge of RxSTS1OHClk_n.
As a consequence, external circuitry receiving this data, should sam-
ple this data upon the rising edge of RxSTS1OHClk_n.
NOTES:
1.
The external circuitry can determine whether or not it is
receiving POH or TOH data via this output pin. The
RxSTS1OHSel_n output pin will be "High" anytime POH
data is being output via these output pins. Conversely, the
RxSTS1OHSel_n output pin will be "Low" anytime TOH
data is being output via these output pins.
2.
TOH and POH data, associated with Receive STS-1 TOH
and POH Processor Block - Channel 0 will be output via the
RxSTS1OH_0, and so on.