Intel IXF1104 Datasheet page 44

Table 3. SPI3 Interface Signal Descriptions (Sheet 6 of 8)
Signal Name
MPHY
RDAT7
RDAT6
RDAT5
RDAT4
RDAT3
RDAT2
RDAT1
RDAT0
RFCLK
RPRTY_0
RENB_0
Datasheet
Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
®
Intel IXF1104 4-Port Gigabit Ethernet Media Access Controller
Ball
Type
Designator
SPHY
RDAT7_0 F14
RDAT6_0 E14
RDAT5_0 D14
RDAT4_0 C13
Output
RDAT3_0 C14
RDAT2_0 B14
RDAT1_0 A14
RDAT0_0 A15
RFCLK A19 Input
RPRTY_0 E15
RPRTY_1 G16
Output
RPRTY_2 E20
RPRTY_3 F20
RENB_0 A13
RENB_1 A18
Input
RENB_2 C19
RENB_3 E24
Standard Description
Receive Data Bus.
RDAT carries payload data and in-band
addresses from the IXF1104 MAC.
3.3 V
LVTTL
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Receive Clock.
RFCLK is the clock associated with all
3.3 V
receive signals. Data and controls are
LVTTL
driven on the rising edge of RFCLK
(frequency operation range 90 - 133 MHz).
Receive Parity.
RPRTY indicates odd parity for the RDAT
bus. RPRTY is valid only when a channel
asserts RENB or RSX. Odd parity is the
default configuration; however, even parity
can be selected (see
3.3 V
page 215).
LVTTL
32-bit Multi-PHY mode: RPRTY_0 is the
parity bit for all 32 bits.
4 x 8 Single-PHY mode: Each bit of
RPRTY_0:3 corresponds to the respective
RDAT[3:0]_n channel.
Receive Read Enable.
The RENB signal controls the flow of data
from the receive FIFOs. During data
transfer, RVAL must be monitored as it
indicates if the RDAT[31:0], RPRTY,
RMOD[1:0], RSOP, REOP, RERR, and RSX
are valid. The system may de-assert RENB
at any time if it is unable to accept data from
the IXF1104 MAC. When RENB is sampled
Low, a read is performed from the receive
FIFO and the RDAT[31:0], RPRTY,
RMOD[1:0], RSOP, REOP, RERR, RSX and
3.3 V
RVAL signals are updated on the following
LVTTL
rising edge of RFCLK.
When RENB is sampled High by the PHY
device, a read is not performed, and the
RDAT[31:0], RPRTY, RMOD[1:0], RSOP,
REOP, RERR, RSX, and RVAL signals
remain unchanged on the following rising
edge of RFCLK.
32-bit Multi-PHY Mode: RENB_0 covers all
receive bits.
4 x 8 Single-PHY Mode: The RENB_0:3
bits correspond to the per-port data and
control signals.
Bits
[7:0]
[7:0] for port 0
Table 147 on
44