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參數(shù)資料
| 型號： | PM5352-B1 |
| 英文描述： | Interface IC |
| 中文描述： | 接口IC |
| 文件頁數(shù)： | 23/77頁 |
| 文件大?。?/td> | 901K |
| 代理商： | PM5352-B1 |
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PM5352 S/UNI STAR
DATA SHEET
PMC-1990421
ISSUE 2
SATURN USER NETWORK INTERFACE 155 (STAR)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
19
Pin Name
Type
Pin
No.
Function
TCA
Output
(ATM)
J23
UTOPIA Transmit multi-PHY Cell Available (TCA)
The TCA signal indicates when a cell is available in
the transmit FIFO for the port polled by TADR[2:0]
when TENB is asserted. When high, TCA indicates
that the transmit FIFO is not full and a complete cell
may be written. When TCA goes low, it can be
configured to indicate either that the transmit FIFO
is near full or that the transmit FIFO is full. TCA will
transition low on the rising edge of TFCLK after the
Payload word 19 (TCALEVEL0=0) or 23
(TCALEVEL0=1) is sampled if the PHY being polled
is the same as the PHY in use. To reduce FIFO
latency, the FIFO depth at which TCA indicates
"full" can be set to one, two, three or four cells.
Note that regardless of what fill level TCA is set to
indicate "full" at, the transmit cell processor can
store 4 complete cells.
TCA is tri-stated when either the null-PHY address
(0x7) or an address not matching the address set
by PHY_ADR[2:0] is latched from the TADR[2:0]
inputs when TENB is high.
TCA is updated on the rising edge of TFCLK.
This Material Copyrighted by Its Respective Manufacturer
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相關(guān)代理商/技術(shù)參數(shù) |
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| PM5352-BI | 制造商:PMC 制造商全稱:PMC 功能描述:SATURN USER NETWORK INTERFACE 155 (STAR) |
| PM5355 | 制造商:PMC 制造商全稱:PMC 功能描述:SATURN USER NETWORK INTERFACE (622-Mb) |
| PM5355-SGI | 制造商:PMC Sierra from Components Direct 功能描述:PM5355-SGI - Trays 制造商:PMC-Sierra 功能描述:PMC-Sierra PM5355-SGI ATM UNI |
| PM5355-SI | 制造商:PMC Sierra from Components Direct 功能描述:PM5355-SI - Trays 制造商:PMC-Sierra 功能描述:PMC-Sierra PM5355-SI ATM UNI |
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