AMD SC2200 manual F4BAR2+Memory Offset VIP Configuration Registers, VIP Support Registers F4BAR2

15:2

1:0

Video Processor Module - Video Processor Registers - Function 4	32580B
7.3.2.2 VIP Support Registers - F4BAR2
F4 Index 18h, Base Address Register 2 (F4BAR2) points to	are located. Table 7-8shows the memory mapped VIP sup-
the base address of where the VIP Configuration registers	port registers accessed through F4BAR2.

Table 7-8. F4BAR2+Memory Offset: VIP Configuration Registers

Bit	Description
Offset 00h-03h		Video Interface Port Configuration Register (R/W)	Reset Value: 00000000h
31:23	Reserved. Must be set to 0.
22	VIP FIFO Bus Request Threshold. VIP FIFO issues a bus request when it is filled with 32 or 64 bytes.
	0:	64 bytes.
	1:	32 bytes

21VBI Task B Store to Memory. When this bit is enabled, raw VBI Task B data is stored to memory.

0:Disable.

1:Enable.

This bit is relevant only if bit 18 (VBI Configuration Override) = 1 (enabled).

20VBI Task A Store to Memory. When this bit is enabled, raw VBI Task A data is stored to memory.

0:Disable.

1:Enable.

This bit is relevant only if bit 18 (VBI Configuration Override) = 1 (enabled).

19VBI Ancillary Store to Memory. When this bit is enabled, raw VBI Ancillary data is stored to memory.

0:Disable.

1:Enable.

This bit is relevant only if bit 18 (VBI Configuration Override) = 1 (enabled).

18VBI Configuration Override. When this bit is enabled, bits [21:19] override the setup specified in bits 17 and 16.

0:Disable.

1:Enable.

17VBI Data Task. Specifies the CCIR656 video stream task used to store VBI data to memory.

0:Task B.

1:Task A.

This bit is relevant only if bit 16 (VBI Mode for CCIR656) = 1 and bit 18 (VBI Configuration Override) = 0 (disabled).

16VBI Mode for CCIR656. Specifies the mode in which to store VBI data to memory.

0:Use CCIR656 ancillary data to store VBI data to memory.

1:Use CCIR656 video task A or B to store VBI data to memory, depending on the value of bit 17 (VBI Task).

This bit is only used if bit 18 (VBI Configuration Override) = 0 (disabled).

Reserved. Set to 0.

Video Input Port Mode. Selects VIP operating mode. 10: CCIR656 mode.

All other decodes: Reserved.

Offset 04h-07h		Video Interface Control Register (R/W)	Reset Value: 00000000h
31:18	Reserved. Must be set to 0.

17Line Interrupt. When asserted, allows interrupt (INTC#) generation when the Video Current Line register (F4BAR2+ Mem- ory Offset 10h) contents equal the Video Line Target Register (F4BAR2+ Memory Offset 14h) contents.

0:Disable.

1:Enable.

16Field Interrupt. When asserted, allows interrupt (INTC#) generation at the end of a field (i.e., the end of active video for the current field). Interrupt generation can be enabled regardless of whether or not video capture (store to memory) is enabled.

0:Disable.

1:Enable.

15:11 Reserved. Must be set to 0.

AMD Geode™ SC2200 Processor Data Book 357