DS730 Datasheet, PDF (5/46 Pages) Xilinx, Inc – LogiCORE IP Video Direct

LogiCORE IP Video Direct Memory Access v1.1
Page 2 of the Video DMA GUI (Figure 2) allows the specification of the core optional Gen-Lock capabilities.
X-Ref Target - Figure 2
Figure 2: Video DMA, Gen-Lock Options Screen
• Write Transfer Options: These parameters configure the Video DMA Gen-Lock when in operated in write
mode.
• Write Gen-Lock Mode: Specifies the operating mode of the Write Gen-Lock. The allowed selections are:
- Master: Master mode specifies that the Video DMA will operate as the Gen-Lock Master. Gen-Lock
Masters do not drop or repeat frames. See the "Gen-Lock Operation" section for more details.
- Slave: Slave mode specifies that the Video DMA will operate as a Gen-Lock Slave. Gen-Lock Slaves
automatically drop and repeat frames based on the master and slave frame rates. See the "Gen-Lock
Operation" section for more details.
• Write Number of Masters: Specifies the number of Masters to which the Slave can synchronize. The Video
DMA uses a register to dynamically specify which master is in control at any given time. The Write
Number of Masters parameter is available only if the Write Gen-Lock Mode is set to Slave.
• Read Transfer Options: These parameters configure the Video DMA Gen-Lock when in operated in read
mode.
• Read Gen-Lock Mode: Specifies the operating mode of the Read Gen-Lock. The allowed selections are:
- Master: Master mode specifies that the Video DMA will operate as the Gen-Lock Master. Gen-Lock
Masters do not drop or repeat frames. See the "Gen-Lock Operation" section for more details.
- Slave: Slave mode specifies that the Video DMA will operate as a Gen-Lock Slave. Gen-Lock Slaves
automatically drop and repeat frames based on the master and slave frame rates. See the "Gen-Lock
Operation" section for more details.
• Read Number of Masters: Specifies the number of Masters to which the Slave can synchronize. The Video
DMA uses a register to dynamically specify which master is in control at any given time. The Read
Number of Masters parameter is available only if the Read Gen-Lock Mode is set to Slave.
DS730 September 21, 2010
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