HD6433644R datasheet(300/549 Pages) RENESAS

300 / 549 page

Section 10 Serial Communication Interface

Rev. 6.00 Sep 12, 2006 page 280 of 526

REJ09B0326-0600

Bits 7 and 6



Operation Mode Select 1, 0 (SNC1, SNC0): Bits 7 and 6 select the operation

mode.

Bit 7: SNC1

Bit 6: SNC0

Description

8-bit synchronous transfer mode

(initial value)

16-bit synchronous transfer mode

Continuous clock output mode*

Reserved*

Notes: 1. Pins SI1 and SO1 should be used as general input or output ports.

2. Don’t set bits SNC1 and SNC0 to 11.

Bits 5



TAIL MARK Control (MRKON): Bit 5 controls TAIL MARK output after an 8- or 16-

bit data transfer.

Bit 5: MRKON

Description

TAIL MARK is not output (synchronous mode)

(initial value)

TAIL MARK is output (SSB mode)

Bits 4



LATCH TAIL Select (LTCH): Bit 4 selects whether LATCH TAIL or HOLD TAIL is

output as TAIL MARK when bit MRKON is set to 1 (SSB mode).

Bit 4: LTCH

Description

HOLD TAIL is output

(initial value)

LATCH TAIL is output

Bit 3



Clock Source Select (CKS3): Bit 3 selects the clock source and sets pin SCK1 as an input

or output pin.

Bit 3: CKS3

Description

Clock source is prescaler S, and pin SCK1 is output pin

(initial value)

Clock source is external clock, and pin SCK1 is input pin

HD6433644R Datasheet(PDF) 300 Page - Renesas Technology Corp

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