HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 471

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

15.5
1. The transitions to the software standby mode and module standby mode should not be made by
2. The SIOFTXD pin in SIOF is output pin even when the TXE bit is cleared. The SIOFRXD pin
3. The SIOF has some 32-bit registers that handle two pieces of independent 16-bit data. Note
4. When the SIOF is set as a transfer destination or transfer source, a transfer is carried out only
setting the module standby bit of the SIOF during data reception and transmission. The
transitions to software standby mode and module standby mode should be made after both
TXE and RXE bits in the SICTR register have been cleared (transmission/reception disabled).
is in the input enabled state even when the RXE bit is cleared. In software standby mode, the
SIOFTXD pin is high-impedance and the SIOFRXD pin is fixed to input disable state. Note
that the SIOFTXD pin is multiplexed with the port PTA1 and its initial settings after a power-
on reset are an input pin and the pull-up MOS is on. The SIOFRXD pin is multiplexed with the
port PTA2, and the initial settings after a power-on reset are an input pin and the pull-up MOS
is on. Care is required on dealing the signal lines that are connected to the SIOFTXD and
SIOFRXD pins.
that the order of upper word and lower word on the memory may be switched within the
register in a data transfer with above registers when switching the big endian and little endian
by using the MD5 pin.
in longword units.
Usage Notes
Rev. 1.00, 02/04, page 433 of 804