mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 219

• Manufacturer Part Number: mc68hc908bd48
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

16.6.2 Sync Processor Input/Output Control Register (SPIOCR)
MC68HC908BD48
Freescale Semiconductor
—
Rev. 2.1
Figure 16-4. Sync Processor Input/Output Control Register (SPIOCR)
Address:
VPOL — Vsync Input Polarity
HPOL —þHsync Input Polarity
VSYNCS — VSYNC Input State
HSYNCS — HSYNC Input State
Reset:
Read: VSYNCS HSYNCS
Write:
This bit indicates the polarity of the VSYNC input, or the extracted
Vsync from a composite sync input (COMP=1). Reset clears this bit.
This bit indicates the polarity of the HSYNC input. This bit equals the
VPOL bit when the COMP bit is set. Reset clears this bit.
This read-only bit reflects the logical state of the VSYNC input.
This read-only bit reflects the logical state of the HSYNC input.
ATPOL
1 = Vsync is positive polarity
0 = Vsync is negative polarity
1 = Hsync is positive polarity
0 = Hsync is negative polarity
0
0
1
1
$0045
Bit 7
0
Table 16-5. ATPOL, VINVO, and HINVO setting
= Unimplemented
Sync Processor
6
0
VINVO / HINVO
COINV
0
1
0
1
5
0
R
4
0
Same polarity as sync input
Inverted polarity of sync input
Negative polarity sync output
Positive polarity sync output
SOGSEL
R
3
0
VSYNCO/HSYNCO
Sync Outputs:
CLAMPOE
= Reserved
2
0
BPOR
Sync Processor
1
0
Data Sheet
SOUT
Bit 0
0
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