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Intel IXF1104 User Manual

Page 46

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Intel

®

IXF1104 4-Port Gigabit Ethernet Media Access Controller

Datasheet

46

Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005

REOP_0

REOP_0
REOP_1
REOP_2
REOP_3

C16
D18
C23

J19

Output

3.3 V

LVTTL

Receive End of Packet.

REOP indicates the end of a packet when
asserted with RVAL.

32-bit Multi-PHY mode: REOP_0 covers
all 32 bits.

4 x 8 Single-PHY mode: The REOP_0:3
bits correspond to the RDAT[7:0]_n
channels.

RMOD1
RMOD0

NA

G13
G14

Output

3.3 V

LVTTL

Receive Word Modulo:

32-bit Multi-PHY mode: RMOD[1:0]
indicates the valid bytes of data in
RDAT[31:0]. During transmission, RMOD is
always “00”, except when the last double-
word is transferred on RDAT[31:0].
RMOD[1:0] specifies the valid packet data
bytes on RDAT[31:0] when REOP is
asserted.

RMOD[1:0]

Valid Bytes of RDAT

00 = 4 bytes [31:0]

01 = 3 bytes [31:8]

10 = 2 bytes [31:16]

11 = 1 byte [31:24]

4 x 8 Single-PHY mode: RMOD[1:0] is not
required.

RMOD is considered valid only when RVAL
is simultaneously asserted.

RENB must be asserted for RMOD[1:0] to
be valid.

RSX

NA

E13

Output

3.3 V

LVTTL

Receive Start of Transfer.

32-bit Multi-PHY mode: RSX indicates
when the in-band port address is present on
the RDAT bus. When RSX is High and
RVAL = 0, the value of RDAT[7:0] is the
address of the receive FIFO to be selected.
Subsequent data transfers on RDAT are
from the FIFO specified by this in-band
address. Values of 0, 1, 2, and 3 select the
corresponding port. RSX is ignored when
RVAL is de-asserted.

4 x 8 Single-PHY mode: RSX is ignored.

Table 3. SPI3 Interface Signal Descriptions (Sheet 8 of 8)

Signal Name

Ball

Designator

Type

Standard

Description

MPHY

SPHY