HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 439

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

SCR1—Serial control register 1
Bit
Initial value
Read/Write
Operation mode select
0
1
TAIL MARK control
0
1
0
1
0 TAIL MARK is not output (synchronous mode)
1 TAIL MARK is output (SSB mode)
SNC1
R/W
8-bit synchronous transfer mode
16-bit synchronous transfer mode
Continuous clock output mode
Reserved
7
0
LATCH TAIL select
0 HOLD TAIL is output
1 LATCH TAIL is output
Clock source select (CKS3)
0 Clock source is prescaler S, and pin SCK is output pin
1 Clock source is external clock, and pin SCK is input pin
SNC0
R/W
6
0
Clock select (CKS2 to CKS0)
CKS2 CKS1 CKS0
Bit 2
MRKON
0
1
R/W
5
0
Bit 1
0
1
0
1
LTCH
R/W
4
0
Bit 0
0
1
0
1
0
1
0
1
Prescaler
Division
ø/1024
ø/256
ø/64
ø/32
ø/16
ø/8
ø/4
ø/2
CKS3
R/W
3
0
H'FFA0
CKS2
R/W
ø = 5 MHz
204.8 s
51.2 s
12.8 s
6.4 s
3.2 s
1.6 s
0.8 s
—
2
0
1
Serial Clock Cycle
1
Synchronous
CKS1
R/W
1
0
ø = 2.5 MHz
409.6 s
102.4 s
25.6 s
12.8 s
6.4 s
3.2 s
1.6 s
0.8 s
CKS0
R/W
0
0
SCI1
435