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IXF1104 4-Port Gigabit Ethernet Media Access Controller
42 Datasheet
Document Number: 278757
Revision Number: 007
Revision Date: March 25, 2004
PTPA PTPA B11 Output
3.3 V
LVTTL
Polled-PHY Transmit Packet Available.
PTPA allows the polling of the port selected
by the TADR address bus.
When High, PTPA indicates that the amount
of data in the TX FIFO is below the TX FIFO
High watermark. When the High watermark
is crossed, PTPA transitions Low to indicate
that the TX FIFO is almost full. It stays Low
until the amount data in the TX FIFO goes
back below the TX FIFO Low watermark. At
this point, PTPA transitions High to indicate
that the programmed number of bytes are
now available for data transfers.
NOTE: For more information, see
Table 132 “TX FIFO High
Watermark Ports 0 - 3 ($0x600 –
0x603)” on page 202 and Table 133
“TX FIFO Low Watermark Register
Ports 0 - 3 ($0x60A – 0x60D)” on
page 203.
The port reported by PTPA is updated on
the following rising edge of TFCLK after the
port address on TADR is sampled by the
PHY device.
PTPA is updated on the rising edge of
TFCLK.
RDAT31
RDAT30
RDAT29
RDAT28
RDAT27
RDAT26
RDAT25
RDAT24
RDAT7_3
RDAT6_3
RDAT5_3
RDAT4_3
RDAT3_3
RDAT2_3
RDAT1_3
RDAT0_3
F24
G24
G23
G22
G21
G20
G19
G18
Output
3.3 V
LVTTL
Receive Data Bus.
RDAT carries payload data and in-band
addresses from the IXF1104.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[31:24]
[7:0] for port 3
RDAT23
RDAT22
RDAT21
RDAT20
RDAT19
RDAT18
RDAT17
RDAT16
RDAT7_2
RDAT6_2
RDAT5_2
RDAT4_2
RDAT3_2
RDAT2_2
RDAT1_2
RDAT0_2
E21
E22
D22
C22
C21
C20
B22
B20
Output
3.3 V
LVTTL
Receive Data Bus.
RDAT carries payload data and in-band
addresses from the IXF1104.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[23:16]
[7:0] for port 2
RDAT15
RDAT14
RDAT13
RDAT12
RDAT11
RDAT10
RDAT9
RDAT8
RDAT7_1
RDAT6_1
RDAT5_1
RDAT4_1
RDAT3_1
RDAT2_1
RDAT1_1
RDAT0_1
F18
E18
E17
F16
E16
D16
C17
A17
Output
3.3 V
LVTTL
Receive Data Bus.
RDAT carries payload data and in-band
addresses from the IXF1104.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[15:8]
[7:0] for port 1
Table 3. SPI3 Interface Signal Descriptions (Sheet 5 of 8)
Signal Name
Ball
Designator
Type Standard Description
MPHY SPHY