IBM3009K2672
IBM SONET/SDH Framer
APS Interface Pin Descriptions
Pin Name
Pin No.
I/O
Type
Pin Description
TXAPSDAT(8)
TXAPSDAT(7)
TXAPSDAT(6)
TXAPSDAT(5)
TXAPSDAT(4)
TXAPSDAT(3)
TXAPSDAT(2)
TXAPSDAT(1)
TXAPSDAT(0)
R13
R15
P12
P13
P14
N11
N13
N15
M12
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
Transmit APS Data: Bit 0 is the LSB. This is a bidirectional port. When the
SONET/SDH framer is configured to output data on the transmit APS inter-
face, these pins are outputs. When the SONET/SDH framer is configured to
accept data from the transmit APS interface, these pins are inputs. This
data bus is used to pass transmit C-4 (VC-4) data from one SONET/SDH
framer to another.
LVTTL-5sd
Transmit APS Parity: This is a bidirectional pin. When the SONET/SDH
framer is configured to output data on the transmit APS interface, this pin is
an output and provides parity for the TXAPSDAT(8:0) bus. When the
SONET/SDH framer is configured to accept data from the transmit APS
interface, this pin is an input and accepts parity from the SONET/SDH
framer that is driving the transmit APS interface.
TXAPSPAR
M13
I/O (T)
LVTTL-5sd
Transmit APS Provided Data Valid: This is a bidirectional pin. When the
SONET/SDH framer is configured to output data on the transmit APS inter-
face, this pin is an output and indicates when data on the TXAPSDAT(8:0)
bus is valid. A high means that data is valid on the considered clock edge. A
TXAPSDAVA
M14
I/O (T)
LVTTL-5sd low means that data is not valid. When the SONET/SDH framer is config-
ured to accept data from the transmit APS interface, this pin is an input and
tells the SONET/SDH framer if the data being received on the TXAPS-
DAT(8:0) bus is valid or not. A high means that data is valid on the consid-
ered clock edge. A low means that data is not valid.
Transmit APS Data Request: This is a bidirectional pin. When the
SONET/SDH framer is configured to output data on the Transmit APS inter-
face, this pin is an input and tells the SONET/SDH framer that one of the
other connected SONET/SDH framers is requesting data. A high means
LVTTL-5sd that data is being requested. A low means that no data is requested. When
the SONET/SDH framer is configured to accept data from the transmit APS
interface, this pin is an output and indicates that this SONET/SDH framer is
requesting data. A high means that data is being requested. A low means
that no data is requested.
TXAPSDARQ
L11
I/O (T)
RXAPSDAT(8)
RXAPSDAT(7)
RXAPSDAT(6)
RXAPSDAT(5)
RXAPSDAT(4)
RXAPSDAT(3)
RXAPSDAT(2)
RXAPSDAT(1)
RXAPSDAT(0)
L13
L15
K11
K12
K13
K14
J13
J15
H14
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
I/O (T)
Receive APS Data: Bit 0 is the LSB. This is a bidirectional port. When the
SONET/SDH framer is configured to output data on the receive APS inter-
face, these pins are outputs. When the SONET/SDH framer is configured to
accept data from the receive APS interface, these pins are inputs. This data
bus is used to pass receive C-4 (VC-4) data from one SONET/SDH framer
to another.
LVTTL-5sd
Receive APS Parity: This is a bidirectional pin. When the SONET/SDH
framer is configured to output data on the receive APS interface, this pin is
an output and provides parity for the RXAPSDAT(8:0) bus. When the
SONET/SDH framer is configured to accept data from the receive APS
RXAPSPAR
H15
I/O (T)
LVTTL-5sd
interface, this pin is an input and accepts parity from the SONET/SDH
framer that is driving the receive APS interface.
Receive APS Provided Data Valid: This is a bidirectional pin. When the
SONET/SDH framer is configured to output data on the receive APS inter-
face, this pin is an output and indicates when data on the RXAPSDAT(8:0)
bus is valid. A high means that data is valid on the considered clock edge. A
LVTTL-5sd low means that data is not valid. When the SONET/SDH framer is config-
ured to accept data from the receive APS interface, this pin is an input and
tells the SONET/SDH framer if the data being received on the RXAPS-
DAT(8:0) bus is valid or not. A high means that data is valid on the consid-
ered clock edge. A low means that data is not valid.
RXAPSDAVA
G15
I/O (T)
Pin Information
ssframer.01
8/27/99
Page 46 of 279
IBM [ IBM ]
