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(2) Caution to AFE Interface
This module is the interface for the RSA Communication Inc. software modem.
(3) Standby mode
HD64465 supports several method to reduce power consumption.
Please select properly setting regarding your system design.
• Module standby mode
Set SMSCR for each functional module except USB-HOST to enter module standby.
Set HC Control Register to let USB-HOST enter module standby.
To stop internal bus for USB-HOST , use Clock Gating method.
• Clock Gating
Set SPCCR to gate clock or to stop oscilation.
• PLL stop
Set SPLLCR to disable PLL.
• I/O setting
Set SBCR properly to match your system design. Also check Pin Status List at each
state(Power On Reset / Active / Standby).
(4) Others
PCB layout information can be prepared as IBIS model file and Boundary Scan Description
Language file by Hitachi Ltd. without any kind of guarantee to work correctly.
Rev. 3.0, 03/01, page 380 of 390
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