TXC-03453BROG Transwitch Corporation, TXC-03453BROG Datasheet - Page 21

• Manufacturer Part Number: TXC-03453BROG
• Manufacturer: Transwitch Corporation

Specifications of TXC-03453BROG

• Screening Level: Industrial
• Package Type: BGA
• Lead Free Status / Rohs Status: Compliant

OVERHEAD COMMUNICATIONS CHANNEL (O-BIT) INTERFACE
Where n represents the channel number, channels 1 through 3.
Symbol
Symbol
R1OCD
R2OCD
R3OCD
R1OCC
R2OCC
R3OCC
R1NRC
R2NRC
R3NRC
T1OCD
T2OCD
T3OCD
T1OCC
T2OCC
T3OCC
Proprietary TranSwitch Corporation Information for use Solely by its Customers
Lead No.
Lead No.
AB21
C12
A16
A19
B12
B15
B18
F20
F19
A4
B7
A9
C5
A6
B9
I/O/P*
O (T)
I/O/P
O
O
O
I
LVCMOS
LVCMOS
LVCMOS
LVCMOS
LVTTL
Type
Type
4mA
4mA
4mA
4mA
DATA SHEET
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Monitor Transmit Line Clock: Data (RnNRD) for the
performance monitoring circuits is clocked out on rising
edges of the corresponding clock. This lead is forced to a
high impedance state when
Receive Overhead Communications Channel Data:
Unaligned data output for the overhead communications
channel (O-bits) defined in the DS3 format and two
reserved bits defined in the E3 format are provided. The
O-bits for channel n are clocked out on falling edges of
the RnOCC clock signal.
Receive Overhead Communications Channel Clock:
A gapped 720 kHz output clock that has an average fre-
quency of 144 kHz, that is used for clocking out the
received overhead communications channel bits
(RnOCD) to external circuitry.
Transmit Overhead Communications Channel Data:
Data input for transmitting the overhead communications
channel in the DS3 format, and two defined reserved bits
in the E3 format. This input is enabled when a 1 is written
to control bit EXOO (bit 7 in XC4H) for the corresponding
channel. Data is clocked in on rising edges of the TnOCC
clock signal. The bits are transmitted unaligned regarding
bit position and subframe number within the payload.
Transmit Overhead Communications Channel Clock:
A gapped 720 kHz output clock that has an average fre-
quency of 144 kHz, which is used for clocking in the
transmit overhead communications channel bits
(TnOCD) from external circuitry when enabled.
- Control bit L3EN (bit 0 in 0C2H) is set to 0
- Control bit L3OEN (bit 0 in XC2H) is set to 0 for the
- Hardware reset (lead RESET) or software reset
- RESETn (bits 1-3 in 0C7H) is set to 1 for the corre-
corresponding channel
(RESETS, bit 0 in 0C7H) occurs
sponding
channel.
Name/Function
Name/Function
PRELIMINARY TXC-03453B-MB, Ed. 3
TXC-03453B
September 2003
TL3M