tdat04622 ETC-unknow, tdat04622 Datasheet - Page 53

• Manufacturer Part Number: tdat04622
• Description: Tdat Sonet/sdh 155/622/2488 Mbits/s Data Interfaces
• Manufacturer: ETC-unknow

Data Sheet
May 2001
Agere Systems Inc.
Pin Information
Table 3. Pin Descriptions—Line Interface Signals (continued)
Unused LVPECL outputs should not be terminated to minimize power consumption. Unused inputs are internally
disabled whenever core registers 0x0010 and 0x0011 are properly provisioned. The unused inputs can be consid-
ered to be NC (no connect).
* I
u
Pin
U4
U5
U3
U1
U2
R3
R2
R4
R5
T2
T4
T3
= I
d
= 50 kΩ, where I
TxFSYNCN
TxFSYNCP
TxD[0]P/
TxD[0]N/
TxD[1]P/
TxD[1]N/
TxD[2]P/
TxD[2]N/
TxD[3]P/
TxD[3]N/
TxD[D]P
TxD[D]N
TxD[C]P
TxD[C]N
TxD[B]N
TxD[A]N
TxD[B]P
TxD[A]P
Symbol
TxCKP
TxCKN
u
= internal pull-up resistance and I
(continued)
LVPECL
LVPECL
LVPECL
LVPECL
LVPECL
LVPECL
Type
I/O*
I
I
O
O
O
O
I
d
u
Transmit Line Clock. When in STS-48/STM-16 mode, this clock
is a 155.52 MHz input and clocks out TxD[15:0]P/N or TxD[D:A].
When in STS-12/STM-4 mode, this clock is a 622.08 MHz input
and clocks out TxD[D:A]P/N.
When in STS-3/STM-1 mode, this clock is a 155.52 MHz input
and clocks out TxD[D:A]P/N.
Transmit Line Frame Sync. This input is the external 8 kHz
transmit line frame sync. Driving this input is optional. If undriven
from an external source, these pins must be no connects. When
this input is used, it must be (1) synchronized to TxCKP/N, and (2)
at least one TxCKP/N cycle wide, up to a maximum of 1 frame
period minus 2 TxCKP/N cycles wide.
Transmit Line Data Output [0]/Transmit Line Data Output
Channel D. In STS-48/STM-16 mode, the pins function as trans-
mit line data output [0] at 155.52 Mbits/s.
In STS-3/STM-1 or STS-12/STM-4 mode, the pins function as
transmit data output channel D at either 155.52 Mbits/s or
622.08 Mbits/s.
This buffer is internally disabled through proper provisioning when
the input is not active.
Transmit Line Data Output [1]/Transmit Line Data Output
Channel C. In STS-48/STM-16 mode, the pins function as trans-
mit line data output [1] at 155.52 Mbits/s.
In STS-3/STM-1 or STS-12/STM-4 mode, the pins function as
transmit data output channel C at either 155.52 Mbits/s or
622.08 Mbits/s.
This buffer is internally disabled through proper provisioning when
the input is not active.
Transmit Line Data Output [2]/Transmit Line Data Output
Channel B. In STS-48/STM-16 mode, the pins function as trans-
mit line data output [2] at 155.52 Mbits/s.
In STS-3/STM-1 or STS-12/STM-4 mode, the pins function as
transmit data output channel B at either 155.52 Mbits/s or
622.08 Mbits/s.
This buffer is internally disabled through proper provisioning when
the input is not active.
Transmit Line Data Output [3]/Transmit Line Data Output
Channel A. In STS-48/STM-16 mode, the pins function as trans-
mit line data output [3] at 155.52 Mbits/s.
In STS-3/STM-1 or STS-12/STM-4 mode, the pins function as
transmit data output channel A at either 155.52 Mbits/s or
622.08 Mbits/s.
This buffer is internally disabled through proper provisioning when
the input is not active.
d
= internal pull-down resistance.
Name/Description
155/622/2488 Mbits/s Data Interface
TDAT042G5 SONET/SDH
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