- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384068 > μPD98402A (NEC Corp.) Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 PDF資料下載
參數(shù)資料
| 型號： | μPD98402A |
| 廠商： | NEC Corp. |
| 元件分類： | 通信及網(wǎng)絡 |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 文件頁數(shù)： | 10/26頁 |
| 文件大?。?/td> | 178K |
| 代理商： | ΜPD98402A |
μ
PD98402A
10
Management Interface
Symbol
Pin No.
I/O
I/O Level
Function
D0-D7
104-106
108-112
I/O
CMOS
8-bit data bus for data transfer between the control processor
and the internal register of the
μ
PD98402A.
A0-A5
114-119
I
TTL
Address bus. Used for setting the internal register address of
the
μ
PD98402A.
R/W
123
I
TTL
Read/write control signal.
Low level: Write cycle
High level: Read cycle
CE
126
I
TTL
Chip enable signal.
At low level, internal register access is to be enable.
ACK
124
O
CMOS
Read/write cycle receive acknowledge or ready signal.
After reset, this signal indicates inactive level.
PHINT
127
O
CMOS
Signal which indicates the interrupt cause occurrence to the
processor.
After reset, this signal indicates inactive level.
OE
125
I
TTL
Output enable. When this signal is set to low level, the
μ
PD98402A outputs data to the control bus. Even if the CE
signal is inactive, when this signal is at low level, the
μ
PD98402A drives the control bus.
OAM Interface
Symbol
Pin No.
I/O
I/O Level
Function
LOS
9
O
CMOS
Loss of signal detection. Output high level when receive serial
data input is "0" for 50
μ
s continuously or optical input stop
signal (RAL) is input. When 2 consecutive frames of valid
synchronous pattern is detected, or when input of the optical
input stop signal is released, low level is output. To be
inactive after reset.
OOF
10
O
CMOS
Out of frame detection. When 4 consecutive frames of wrong
synchronous pattern are detected, high level is output. When
2 consecutive frames of normal synchronous pattern are
detected, low level is output. To be inactive after reset.
RAL
7
I
TTL
Receive alarm. Inputs receiver-side optical input stop signal
by the optical module.
Low level: Normal
High level: Optical input stopped.
TAL
8
I
TTL
Transmit alarm. Inputs transmit-side optical output stop signal
output by the optical module.
Low level: Normal
High level: Optical output stopped.
相關PDF資料 |
PDF描述 |
|---|---|
| μPD98402 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| μPD98404 | High-performance ATM controller(高性能異步傳輸模式控制器) |
| μPD98405 | 155M ATM Integrated SAR Controller(155M ATM SAR集成控制器) |
| μPD98408 | ATM Physical Interface(ATM 物理接口) |
| μPD98411 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PD98CNT30QMU | 制造商:Carlo Gavazzi 功能描述:PHOTO TS PL 30M AC/DC NO+NC |
| PD9909-59 | 制造商:Philco/Philips 功能描述: |
| PD9930-51 | 制造商:Philco/Philips 功能描述: |
| PD9933-59 | 制造商:Philco/Philips 功能描述: |
| PD9941-59 | 制造商:Philco/Philips 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。