max2986cxv Maxim Integrated Products, Inc., max2986cxv Datasheet - Page 10

• Manufacturer Part Number: max2986cxv
• Description: Integrated Powerline Digital Transceiver Integrated Products
• Manufacturer: Maxim Integrated Products, Inc.

Integrated Powerline Digital Transceiver
When a frame in the external host is ready to transmit
and MIICRS is not high (the previous transmission has
finished), the external host asserts MIITXEN, while data
is ready on MIIDAT[3:0]. In response, the MAX2986
asserts MIICRS.
Figure 5. Transmission Behavior of the MII Interface
Figure 6. MII Interface—Detailed Transmit Timing
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MIITXEN
MIICLK
MIIDAT
MII Signal Timing—Transmitting
MIITXEN
MIICLK
MIICRS
MIIDAT
t
IS
t
IH
DATA
DATA
While the external host keeps MIITXEN high, data is
sampled synchronously with respect to MIICLK into the
MAX2986 through MIIDAT.
After transmission of the last byte of data and before
the next positive edge of the MIICLK, MIITXEN is reset
by the external host.
The transmission timing of the MII interface is illustrated
in Figure 5, with details in Figure 6 and Table 3.
Table 3. MII Interface—Detailed Transmit
Timing*
* Per IEEE 802.3u standard.
PARAMETER
DATA
t
t
IS
IH
DATA
Setup prior to positive
edge of MIICLK
Hold after positive edge
of MIICLK
DESCRIPTION
MIN
2.5
2.5
UNITS
ns
ns