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參數(shù)資料
| 型號(hào)： | TNETA1610 |
| 廠(chǎng)商： | Texas Instruments, Inc. |
| 英文描述： | STS-12c/STM-4 Receiver/Transmitter with Clock Recovery/Generation(STS-12C/STM-4接收/傳送器) |
| 中文描述： | STS-12c/STM-4接收器/發(fā)射器的時(shí)鐘恢復(fù)/代（STS-12C/STM-4接收/傳送器） |
| 文件頁(yè)數(shù)： | 3/10頁(yè) |
| 文件大?。?/td> | 215K |
| 代理商： | TNETA1610 |
TNETA1610
STS-12c/STM-4 RECEIVER/TRANSMITTER
WITH CLOCK RECOVERY/GENERATION
SDNS037 – SEPTEMBER 1995 – REVISED MARCH 1996
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
(Continued)
receive-parallel interface
TERMINAL
I/O
DESCRIPTION
NAME
NO.
OOF
I
(TTL)
Out of frame. OOF is generated by subsequent processing elements to control bit
alignment in the TNETA1610. When OOF goes high, the TNETA1610 begins a
search of the received data for a string of twelve consecutive A1 bytes (i.e., twelve
F6s). Once this sequence is found, the TNETA1610 aligns the byte-wide output
data with the A1-byte boundaries. The TNETA1610 does not realign the output
when OOF is low.
RPCK
O
(TTL)
Receive parallel clock. RPCK accompanies the data on RPD0–RPD7 for timing
purposes.
RPD0–RPD7
O
(TTL)
Receive parallel (byte-wide) data. RPD0–RPD7 are valid on the rising edge of
RPCK.
transmit-parallel interface
TERMINAL
I/O
DESCRIPTION
NAME
NO.
RTNCK
I
(TTL)
Return clock. RTNCK accompanies data on TPD0–TPD7 such that the data is read
into the TNETA1610 on low-to-high transitions of RTNCK. RTNCK can be tied to
TPCK if timing requirements between TPCK and TPD0–TPD7 can be met.
TPCK
O
(TTL)
Transmit clock. TPCK is an output to subsequent processing elements that
coordinates data transfers on TPD0–TPD7.
TPD0–TPD7
I
(TTL)
Transmit parallel (byte-wide) data. TPD0–TPD7 are read into the TNETA1610 on
low-to-high transitions of RTNCK.
miscellaneous signals
TERMINAL
I/O
DESCRIPTION
NAME
NO.
CRCAP
Capacitor connection for clock-recovery PLL filter.
FLAGT/FLAGC
I
(PECL)
Loss-of-optical-carrier alarm (true and complement). This differential input is
connected to a fiber-optic receiver loss-of-optical-carrier output to provide a
TTL-level signal (LOPC) indicating when the incoming optical signal is lost.
GND1
Ground. GND1 is the 0-V reference for TTL circuits.
GND2
Ground. GND2 is the 0-V reference for PECL circuits.
LOPC
O
(TTL)
Loss-of-optical-carrier. LOPC is a TTL version of FLAGT/FLAGC. LOPC is high
when FLAGT/FLAGC are at a high level.
NC
No connection. Leave open.
TEST
Manufacturing test. Leave open.
THGND
Thermal ground. THGND terminals are used as thermal connections to the board
ground plane. There is no electrical connection in the TNETA1610.
Supply voltage. VCC1 is the 5 V
±
5 % supply for TTL circuits.
Supply voltage. VCC2 is the 5 V
±
5 % supply for PECL circuits.
VCC1
VCC2
P
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