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| 型號： | PM5352-B1 |
| 英文描述： | Interface IC |
| 中文描述： | 接口IC |
| 文件頁數(shù)： | 22/77頁 |
| 文件大小： | 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
18
Pin Name
Type
Pin
No.
Function
TENB
Input
(POS)
J22
POS-PHY Transmit Multi-PHY Write Enable (TENB)
signal.
The S/UNI-STAR supports both byte-level and
packet-level transfer. Packet-level transfer operates
in a similar fashion to Utopia, with a selection phase
when TENB is deasserted and a transfer phase
when TENB is asserted. While TENB is asserted,
TADR[2:0] is used for polling PTPA and the
currently selected PHY status is provided on STPA.
Byte level transfer works on a cycle basis. When
TENB is asserted, data is transferred to the
selected PHY. Nothing happens when TENB is
deasserted. Polling is not available and packet
availability is indicated by DTPA.
TENB is sampled on the rising edge of TFCLK.
Transmit Address (TADR[2:0]). The TADR[2:0] bus
is used for device selection and device polling in
accordance with the Utopia Level 2 standard.
When TADR[2:0] is set to the same value as the
PHY_ADR[2:0] inputs than the transmit interface of
this S/UNI-STAR is either being selected or polled.
Note that the null-phy address 0x7 is an invalid
Address and cannot be used to select the S/UNI-
STAR.
TADR[2:0] is sampled on the rising edge of TFCLK.
POS-PHY Transmit Write Address (TADR[2:0])
signals.
The TADR[2:0] bus is used to select the FIFO (and
hence port) that is written to using the TENB signal.
In packet level transfer mode, TADR[2:0] is also
used for polling on PTPA.
Note that address 0x7 is the null-PHY address and
cannot be used to select theS/UNI-STAR.
TADR[2:0] is sampled on the rising edge of TFCLK.
TADR[2]
TADR[1]
TADR[0]
Input
(ATM)
G21
H20
G22
TADR[2]
TADR[1]
TADR[0]
Input
(POS)
G21
H20
G22
This Material Copyrighted by Its Respective Manufacturer
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