FRMPTR_STS (MM2S and S2MM Current Frame Pointer Status – Offset 24h) - 6.3 English

AXI Video Direct Memory Access v6.3 Product Guide (PG020)

Document ID
PG020
Release Date
2022-06-08
Version
6.3 English

This register provides the current operating frame pointer status of both MM2S and S2MM channels. This helps in tracking frame pointers when they are operating in different Genlock modes.

Table 4-3:       FRMPTR_STS Register Details

Bits

Field Name

Default Value

Access Type

Description

31 downto 29

Reserved

0

RO

Writing to these bits has no effect, and they are always read as zeros.

28 downto 24

S2MMFrmPtrIn

0

RO

S2MM Frame Pointer Input

Reserved if S2MM channel is Genlock Master

Indicates Genlock Master frame pointer value if S2MM channel is Genlock Slave

Indicates Dynamic Genlock Slave frame pointer value if S2MM channel is Dynamic Genlock Master

Indicates Dynamic Genlock Master frame pointer value if S2MM channel is Dynamic Genlock Slave

23 downto 21

Reserved

0

RO

Writing to these bits has no effect, and they are always read as zeros.

20 downto 16

S2MMFrmPtrOut

0

RO

Indicates current working frame of S2MM channel.

15 downto 13

Reserved

0

RO

Writing to these bits has no effect, and they are always read as zeros.

12 downto 8

MM2SFrmPtrIn

0

RO

MM2S Frame Pointer Input

Reserved if MM2S channel is Genlock Master

Indicates Genlock Master frame pointer value if MM2S channel is Genlock Slave

Indicates Dynamic Genlock Slave frame pointer value if MM2S channel is Dynamic Genlock Master

Indicates Dynamic Genlock Master frame pointer value if MM2S channel is Dynamic Genlock Slave

7 downto 5

Reserved

0

RO

Writing to these bits has no effect, and they are always read as zeros.

4 downto 0

MM2SFrmPtrOut

0

RO

Indicates current working frame of MM2S channel.