Visible to Intel only — GUID: rwc1640173736723
Ixiasoft
Visible to Intel only — GUID: rwc1640173736723
Ixiasoft
37.4. Mixer IP Registers
Address | Register | Access | Description | |
---|---|---|---|---|
0x0000 | VID_PID | RO | Read this register to retrieve mixer product ID. This register always returns 0x6FA7_0233 |
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0x0004 | VERSION | RO | Read this register to retrieve the IP version information. |
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0x0008 | LITE_MODE | RO | Read this register to determine if you turn on lite mode. This register returns 0 when you turn off lite and 1 when you turn on lite. | |
0x000C | DEBUG_ENABLED | RO | Read this register to determine if Debug features is on. This register returns 1 if reads to other registers designated as RW return the last value you write to the register, or an undefined value. | |
0x0010 | PIXELS_IN_PARALLEL | RO | Read this register to determine if the IP supports 4:4:4 chroma sampling at the output | |
0x0014 | NUM_LAYERS | RO | Read this register to determine if the IP supports 4:2:2 chroma sampling at the output | |
0x0018 + (n-1)*8
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LAYER_n_SUPPORTED_BLEND_MODES | RO | Read return values | |
0x001C+ (n-1)*8 | LAYER_n_RESTRICTED_OFFSETS | RO | Read this register to determine if restricted offsets is on for layer n (1 <= X <= 7). Returns 1 if restricted offsets is on and 0 otherwise | |
0x0060 to 0x011F | - | - | Unused. |
Address | Register | Access | Description | |
---|---|---|---|---|
Lite | Full | |||
0x0120 | IMG_INFO_WIDTH | RW | RO | When you turn on lite, use this register to set the expected width of incoming video fields. When you turn off lite and turn on Debug features, this register returns the width that the mixer derives from information in the image information packet. |
0x0124 | IMG_INFO_HEIGHT | RW | RO | When you turn on lite, use this register to set the expected height of incoming video fields. When you turn off lite and turn on Debug features, this register returns the height that the mixer derives from information in the image information packet. |
0x0128 | IMG_INFO_INTERLACE | -
|
RO | When you turn off lite and turn on Debug features, this register returns the interlace nibble that the mixer derives from information in the image information packet. Not in lite mode. |
0x012C | Reserved | - | - | Reserved. |
0x0130 | IMG_INFO_COLORSPACE | - | RO | When you turn off lite and turn on Debug features, this register returns the color space that the mixer derives from information in the image information packet. Not in lite mode. |
0x0134 | IMG_INFO_SUBSAMPLING | RW | RO | When you turn on lite, use this register to set the expected chroma sampling of incoming video fields. When you turn off lite and turn on Debug features, this register returns the subsampling that the mixer derives from information in the image information packet. Not in lite mode. |
0x0138 | IMG_INFO_COSITING | - | RO | When you turn off lite and turn on Debug features, this register returns the cositing that the mixer derives from information in the image information packet. Not in lite mode. |
0x013C | IMG_INFO_FIELD_COUNT | - | RO | When you turn off lite and turn on Debug features, this register returns the field count that the mixer derives from information in the image information packet. Not in lite mode. |
0x012C to 0x013C | - | - | - | Unused. |
0x0140 | STATUS | RO | Bit 0: Status bit. 1 = mixer is processing a video field, 0 otherwise.
When you turn off Lite mode: Bit 1: Pending register updates bit. Any writes to the output sampling register (0x0148) causes the IP to raise the pending register updates bit, to indicate outstanding changes to the resampling settings. The IP lowers this bit at the next field boundary after a write to the COMMIT register.
Bits [14:8]: Layer running bits. 1 bit per overlay layer (layers 1 and up). Bit n+7 returns 1 if the IP displays or consumes layer n for the current base layer frame. |
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0x0144 | COMMIT | RW | Only when you turn off lite mode. Any changes to the mixer settings via the register map are held pending until a write is issued to this register. The value you write is unimportant. | |
0x0148 + (n-1)*0x1C | LAYERn_MODE | RW | Write to this register to set the layer enable mode for layer n. | |
0x014C + (n-1)*0x1C | LAYERn_BLEND_MODE | RW | Write to this register to set the blend mode for layer n. | |
0x0150 + (n-1)*0x1C | LAYERn_STATIC_ALPHA
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RW | Write to this register to set the static alpha value for layer n. | |
0x0154 + (n-1)*0x1C | LAYERn_H_OFFSET
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RW | Write to this register to set the horizontal offset for layer n. | |
0x0158 + (n-1)*0x1C | LAYERn_V_OFFSET | RW | Write to this register to set the vertical offset for layer n. | |
0x015C + (n-1)*0x1C | LAYERn_WIDTH |
RW | Write to this register to set the field width for layer n. Only when you turn on lite mode. | |
0x0160 + (n-1)*0x1C | LAYERn_HEIGHT | RW | Write to this register to set the field height for layer n. Only when you turn on lite mode. |
Register Bit Descriptions
Name | Bits | Description |
Mixer version ID and product ID | 31:0 | This register always returns 0x6AF7_0233.
|
Name | Bits | Description |
Register map version | 7:0 | Register map version. |
IP patch revision | 15:8 | - |
IP update revision | 23:16 | Updated when the IP version changes. |
IP major revision | 31:24 | Updated when the IP version changes. |
Name | Bits | Description |
Lite mode parameterization bit | 31:0 | Returns 1 if you turn on lite mode and 0 otherwise. |
Name | Bits | Description |
Debug features parameterization bit | 31:0 | Returns 1 if you turn on debug features and 0 otherwise. |
Name | Bits | Description |
Pixels in parallel | 31:0 | Returns the number of pixels processed per clock cycle. |
Name | Bits | Description |
Number of layers | 31:0 | Returns the number of mixer layers (including the base layer). |
Name | Bits | Description |
Layer n supported blend modes | 31:0 | Returns 0 for no blending (opaque overlay only), 1 for blending with static alpha, 2 for per-pixel blending using in-stream alpha values, and 3 for runtime switching between static alpha and per-pixel alpha. |
Name | Bits | Description |
Layer n restricted offsets | 31:0 | Returns 1 if horizontal offsets for layer n should be limited to integer multiples of pixels in parallel and 0 otherwise. |
Name | Bits | Description |
Width bits | 15:0 | If you turn on lite mode, write to this register to set the expected width of the incoming video fields. If you turn off lite mode and turn on debug features, this register returns the width-1 field from the most recently received image information packet and adds 1 to return a value for width. |
unused | 31:16 | unused |
Name | Bits | Description |
Height bits | 15:0 | If you turn on lite mode, write to this register to set the expected height of the incoming video fields. If you turn off lite mode and turn on debug features, this register reads the height-1 field from the most recently received image information packet and adds 1 to return a value for height. |
unused | 31:16 | unused |
Name | Bits | Description |
IntlaceNibble bits | 3:0 | If you turn on lite mode, this register has no function. If you turn off lite mode and turn on debug features, this register returns the intlaceNibble field from the most recently received image information packet . |
unused | 31:4 | unused |
Name | Bits | Description |
CSP code bits | 6:0 | If you turn on lite mode, this register has no function. If you turn off lite mode and turn on debug features, this register returns the 7 bit CSP field from the most recently received image information packet . |
unused | 31:7 | Unused. |
Name | Bits | Description |
SubSa code bits | 1:0 | If you turn on lite mode, write to this register to set the expected chroma sampling of the incoming video fields. If you turn off lite mode and turn on debug features, this register returns the SUBSA field from the most recently received image information packet. |
unused | 31:2 | Unused. |
Name | Bits | Description |
Cosite code bits | 1:0 | If you turn on lite mode, this register has no function. If you turn off lite mode and turn on debug features, this register returns the COSITE field from the most recently received image information packet. |
unused | 31:2 | Unused. |
Name | Bits | Description |
Count bits | 6:0 | If you turn on lite mode, this register has no function. If you turn off lite mode and turn on debug features, this register returns the 7 bit FIELD_COUNT field from the most recently received image information packet. |
unused | 31:7 | Unused. |
Name | Bits | Description |
Status bit | 0 | 1 means mixer is processing a video field, 0 otherwise. |
Pending register updates bit | 1 | 1 means mixer has pending updates, 0 otherwise (full mode only). |
unused | 7:2 | Unused. |
Layer running bits | 14:8 | Bit 7+n = 1 if you turn on layer n for display or consume for this field of the base layer. |
unused | 31:15 | Unused. |
Name | Bits | Description |
unused | 31:0 | Unused. |
Name | Bits | Description |
Layer n enable bit | 0 | Host enable bit for layer n (1 <= n <=7). Set to 0 to disable input for layer n. The IP holds TREADY signal for layer n low and accepts no data. Set to 1 to enable input for layer n, subject to the consume and soft start settings in bits 1 and 2. |
Layer n consume bit | 1 | Set to 0 if input from layer n should display in the overlayed output video. Set to 1 to consume the input video from layer n without displaying it. The IP only considers the value of this bit if bit 0 is set to 1. |
Layer n soft start bit | 2 | Set to 0 if the internal mixer logic should wait for valid data on layer n before starting the current frame. Set to 1 if the internal mixer logic is free to disregard layer n if no video data is pending at the start of each output field. When the IP accepts one field from layer n since the last update to this register, it ignores the soft start bit. The internal mixer logic always waits for data to be available on layer n before proceeding with each output field. The IP only considers this value if bit 0 is set to 1. |
unused | 31:3 | Unused. |
Name | Bits | Description |
Layer n blend mode | 1:0 | Blend mode for layer n. Write 0 to not display layer n, 1 for overlay without blending, 2 for blending using static alpha from register map and 3 for per-pixel blending using in-band alpha values. Blend modes must be enabled in the hardware parameter set to be selectable at runtime. |
unused | 31:2 | Unused. |
Name | Bits | Description |
Layer n static alpha | Bits per color-1:0 | Static alpha value for layer n. |
unused | 31:bits per color | Unused. |
Name | Bits | Description |
Layer n horizontal offset | 15:0 | Horizontal offset for layer n |
unused | 31:16 | Unused. |
Name | Bits | Description |
Layer n vertical offset | 15:0 | Vertical offset for layer n. |
unused | 31:16 | Unused. |
Name | Bits | Description |
Layer n field width | 15:0 | Field width for layer n. Only in lite mode |
unused | 31:16 | Unused. |
Name | Bits | Description |
Layer n field width | 15:0 | Field height for layer n. Only in lite mode. |
unused | 31:16 | Unused. |