SH7619 Datasheet, PDF (819/836 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Item
19.6 Usage Notes
Figure 22.4 MDIO Timing and
Frame Structure (READ Cycle)
Page Revision (See Manual for Details)
581 Added
3. Since the HIFMD pin is not initially set to function as
a general port pin, it must be pulled up or down
externally to fix its state.
4. When using a multiplexed pin with a function not
selected with its initial value (for example, using the
PB12/CS3 pin, the initial function of which is PB12,
as the CS3 pin), the pin must be pulled up or down
externally at least after a reset until its pin function is
selected by software to fix its state.
626 Amended
Output on the rising edge
Latch on the rising edge
...
R2 R1 R0
Figure 22.5 MDIO Timing and 626 Amended
Frame Structure (WRITE Cycle)
ter Address
D15 D14
Turn
Around
...
Data
D1 D0
Output on the rising edge
Latch on the rising edge
...
R2 R1 R0
... ^{D15 D14}
D1 D0
22.4.1 Serial Management
Interface (SMI)
ter Address
Turn
Around
Data
626 Added
to _{Shown below is an example of coding for MDC cycles}
631 _{implemented by software loops.}
Note: CO_MDIO_DIR in figures 22.4 and 22.5 above
has a reverse polarity in relation to the MMD bit
in the PIR register.
(Example code listing added below.)
Rev. 5.00 Mar. 15, 2007 Page 781 of 794
REJ09B0237-0500