HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 690

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

24.2.8
HIZCRA is a 16-bit readable/writable register that controls Hi-Z and pull-up for pins for every
function unit*.
Note: * Even if the output Hi-Z state is specified in the HIZCRA, the pull-up MOS remains
Rev. 1.00, 02/04, page 652 of 804
Bit
15 to 9 
8
7
6
5
Bit Name
HIZA8
HIZA7
HIZA6
HIZA5
I/O Buffer Hi-Z Control Register A (HIZCRA)
turned on when port input (pull-up MOS: On) is selected in the PnCR.
Initial
Value*
All 0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R
Description
Reserved
These bits are always read as 0. The write value should
always be 0. When writing 1, the operation of this LSI is
not guaranteed.
Controls high impedance for pins multiplexed with SIOF
related signals
(SIOF_RXD(MISO)/SIOF_TXD(MOSI)/SIOF_SYNC(SIOF
_SS0)/SIOF_SS1/SIOF_SS2).
0 : I/O buffer enters normal operation mode
1 : Input buffer is an OFF state, and I/O buffer enters
Controls high impedance for pins multiplexed with SIOF
related signals (SIOF_MCLK/SIOF_SCK(SCK))
0 : I/O buffer enters normal operation mode
1 : Input buffer is an OFF state, and I/O buffer enters
Controls high impedance for pins multiplexed with SCIF0
related
signals(SCIF0_RxD/SCIF0_TxD/SCIF0_RTS/SCIF0_CTS)
0 : I/O buffer enters normal operation mode
1 : Input buffer is an OFF state, and I/O buffer enters
Controls high impedance for pins multiplexed with SCIF0
related signals (SCIF0_SCK)
0 : I/O buffer enters normal operation mode
1 : Input buffer is an OFF state, and I/O buffer enters
output Hi-Z state.
output Hi-Z state.
output Hi-Z state.
output Hi-Z state.