SH7619_09 Datasheet, PDF (711/860 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 22 Ethernet Physical Layer Transceiver (PHY)
• How to Use (Example)
Write to the SIM registers in the following sequence.
Step
Register to Value for
be Written Writing
Description
1
0
H'2100
Select Tx100 mode. (This operation can be omitted if
Tx100 full-duplex or Tx100 half-duplex mode has been
selected by auto-negotiation,)*
2
20
H'0000
Start register write mode setting.
3
20
H'0000
Register write mode setting (continued)
4
20
H'0400
Register write mode setting (continued)
5
20
H'0000
Register write mode setting (continued)
6
20
H'0400
Finish register write mode setting.
7
23
H'xxxx
Write the setting value. (The initial value of this register is
H'81C8. Change the setting as necessary.)
8
20
H'4416
Validate the setting value (always write this value).
9
20
H'0000
Terminate the register write mode (return to normal
mode).
Note:
The setting of this register is initialized during the auto-negotiation process or when the
PHY module is reset (including a system reset of the LSI). Accordingly, when waveform
adjustment is to be performed by this register, the above steps must be carried out every
time the register is initialized.
Rev. 6.00 Jul. 15, 2009 Page 671 of 816
REJ09B0237-0600