HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 447

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

Note:
Bit
5
4
3, 2
1
0
*
Bit Name
—
SSAST1
SSAST0
FLD1
FLD0
The SS0E, SS1E, and SS2E bits must not be simultaneously set to 1.
Initial
Value
0
0
All 0
0
0
R/W
R/W
R/W
R
R/W
R/W
Description
Setting of SS Assert
Set the setup timing of the SS for the SCK.
•
•
Reserved
These bits are always read as 0. The write value should
always be 0. If 1 is written to these bits, correct operation
cannot be guaranteed.
Frame Delay
Specify the minimum time of the idle state between
frames in terms of the clock number of the SCK.
00: No delay.
01: Delay for 1 clock of the SCK.
10: Delay for 2 clocks of the SCK.
11: Delay for 3 clocks of the SCK.
SSAST[1:0]
00
01
10
11
SSAST[1:0]
00
01
10
11
The continuous communication of the SPI is
performed when the SS pin asserts low continuously.
CPHA = 0
CPHA = 1
SS Setup
0.5 clock
1 clock
1.5 clock
2 clock
SS Setup
0 clock
0.5 clock
1 clock
1.5 clock
Rev. 1.00, 02/04, page 409 of 804
(Unit: SCK clock)
(Unit: SCK clock)
SS Hold
0 clock
0.5 clock
1 clock
1.5 clock
SS Hold
0.5 clock
1 clock
1.5 clock
2 clock