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| 型號(hào)： | PM5352-B1 |
| 英文描述： | Interface IC |
| 中文描述： | 接口IC |
| 文件頁(yè)數(shù)： | 31/77頁(yè) |
| 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
27
Pin Name
Type
Pin
No.
Function
RSOP
Output
(POS)
P23
POS-PHY Receive Start of Packet (RSOP).
RSOP marks the first word of a packet transfer.
RSOP is tristated when RENB is deasserted. RSOP
is also tristated when either the null-PHY address
(0x7H) or an address not matching the address
space is latched from the RADR[2:0] inputs.
RSOP/RSOP is sampled on the rising edge of
RFCLK
UTOPIA Receive multi-PHY Read Enable (RENB).
The RENB signal is used to initiate reads from the
receive FIFO’s. RENB works as follows. When
RENB is sampled high, no read is performed and
RDAT[15:0], RPRTY and RSOC are tristated, and
the address on RADR[2:0] is latched to select the
device or port for the next FIFO access. When
RENB is sampled low, the word on the RDAT bus is
read from the selected receive FIFO.
RENB must operate in conjunction with RFCLK to
access the FIFO’s at a high enough rate to prevent
FIFO overflows. The system may de-assert RENB
at anytime it is unable to accept another byte.
RENB is sampled on the rising edge of RFCLK.
RENB
Input
(ATM)
P22
This Material Copyrighted by Its Respective Manufacturer
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