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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)： | 33/77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
29
Pin Name
Type
Pin
No.
Function
RADR[2]
RADR[1]
RADR[0]
Input
(POS)
R23
P20
R22
POS-PHY Receive Read Address (RADR).
The RADR signal is used to select the FIFO (and
hence port) that is read from using the RENB
signal.
The RADR bus is used to select the FIFO (and
hence port) that is written to using the TENB signal
and the FIFO's whose packet available signal is
visible on the PRPA polling output.
Note that address 0x7H is the null-PHY address
and will not be identified with the S/UNI-STAR.
RADR is sampled on the rising edge of RFCLK.
UTOPIA Receive multi-PHY Cell Available (RCA).
RCA indicates when a cell is available in the receive
FIFO ( when the STAR is selected by RADR[2:0]).
RCA can be configured to be de-asserted when
either zero or four bytes remain in the
selected/addressed FIFO. RCA will thus transition
low on the rising edge of RFCLK after Payload word
24 (RCALEVEL0=1) or 19 (RCALEVEL0=0) is
output if the PHY being polled is the same as the
PHY in use.
RCA is tristated when either the null-PHY address
(0x7H) or an address not matching the device
address is latched from the RADR[2:0] inputs when
RENB is high.
RCA is updated on the rising edge of RFCLK.
RCA
Output
(ATM)
N20
This Material Copyrighted by Its Respective Manufacturer
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