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RTL8029AS 数据表(PDF) 8 Page - List of Unclassifed Manufacturers

部件名 RTL8029AS
功能描述  Realtek PCI Full-Duplex Ethernet Controller with built-in SRAM
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制造商  ETC2 [List of Unclassifed Manufacturers]
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标志 ETC2 - List of Unclassifed Manufacturers

RTL8029AS 数据表(HTML) 8 Page - List of Unclassifed Manufacturers

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LS009.0
1997.01.16
RTL8029AS Preliminary
8
18
PAR
T/S
Parity is even parity across AD31-0 and CBE3-0B. PAR is
stable and valid one clock after the address phase. For data
phases PAR is stable and valid one clock after either
IRDYB is asserted on a write transaction or TRDYB is
asserted on a read transaction.
13
FRAMEB
S/T/S
Cycle Frame is driven by the current master to indicate the
beginning and duration of an access. FRAMEB is asserted
to indicate a bus transaction is beginning. While FRAMEB
is asserted, data transfers continue. When FRAMEB is
deasserted, the transaction is in the final data phase.
14
IRDYB
S/T/S
Initiator Ready indicates the initiating agent's ability to
complete the current data phase of the transaction. IRDYB
is used in conjunction with TRDYB.
A data phase is
completed on any clock when both IRDYB and TRDYB are
asserted. During a write, IRDYB indicates that valid data is
present on AD31-0. During a read, it indicates the master is
prepare to accept data. Wait cycles are inserted until both
IRDYB and TRDYB are asserted simultaneously.
15
TRDYB
S/T/S
Target Ready indicates the target's agent's ability to
complete the current data phase of the transaction. TRDYB
is used in conjunction with IRDYB. A data phase is
completed on any clock when both TRDYB and IRDYB are
asserted. During a read, TRDYB indicates that valid data is
present on AD31-0. During a write, it indicates the target is
prepare to accept data. Wait cycles are inserted until both
IRDYB and TRDYB are asserted simultaneously.
16
DEVSELB
S/T/S
Device Select, when actively driven, indicates the driving
device has decoded its address as the target of the current
access. As an input, DEVSELB indicates whether any
device on the bus has been selected.
2
IDSEL
I
Initialization Device Select is used as a chip select for
RTL8029AS controller during configuration read and write
transaction.
89
RSTB
I
When RSTB is asserted low, the RTL8029AS performs an
internal system hardware reset. RSTB must be held for a
minimum of 120 ns periods. RSTB may be asynchronous to
CLK when asserted or deasserted. It is recommended that
the deassertion be synchronous to guarantee clean and
bounce free edge.
88
INTAB
O/D
Interrupt A is an asynchronous attention signal which is
used to request an interrupt.
4.4. Memory Interface Pins (including BROM, EEPROM)
No.
Name
Type
Description
49
BOEB
O
Boot ROM chip select. Active low signal, asserted when
Boot ROM is read.
50
NC
-
Unused
53
EECS
O
9346 chip select. Active high signal, asserted when 9346 is
read/write.
51, 67-54
MA14-0
O
Boot ROM address bus
[57]
[EESK]
O
9346 serial data clock


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