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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)： | 24/77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
20
Pin Name
Type
Pin
No.
Function
PTPA
J23
POS-PHY Polled Transmit multi-PHY Packet
Available (PTPA).
PTPA transitions high when a programmable
minimum number of bytes is available in the polled
transmit FIFO (TPAHWM[7:0] register bits). Once
high, PTPA indicates that the transmit FIFO is not
full. When PTPA transitions low, it optionally
indicates that the transmit FIFO is full or near full
(TPALWM[7:0] register bits). PTPA allows to poll
the PHY address selected by TADR[2:0] when
TENB is asserted.
PTPA 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.
PTPA is only available in POS-PHY packet-level
transfer mode, as selected by the POS_PLVL
register bit. PTPA is tristated in byte-level transfer
mode. PTPA is updated on the rising edge of
TFCLK.
This Material Copyrighted by Its Respective Manufacturer
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