Control

Control

Camera Command Status Register

This camera complies with IIDC 1394-based Digital Camera Specification, Version 1.31 (hereinafter referred to as IIDC v1.31).

The standards document can be purchased from 1394TA (the 1394 Trade Association). Because it is very helpful in understanding the explanations in this Technical Manual, we recommend that you purchase a copy of IIDC v1.31.

Memory Map

1394 devices have a 64-bit address space. The upper 10 bits show the bus ID (0~1023), and the next six bits show the node ID (0~63). The IIDC standards require the next 20 bits to be 1.

---BusID---

NodeID

--------(Must be 1)--------

--------(Address used by the camera)

bbbbbbbb bbnnnnnn 11111111 11111111 11110000 11110000 00000000 00000000

The remaining 28 bits can be allocated to the camera as addresses, but in reality, the first 2 bits are fixed at 0, so the largest number of bits that can be allocated to the camera as address space is 24 bits. The bus and node IDs may be changed if the topology is restructured because of bus reset, so only the least significant 32 address bits are shown in this User’s Guide.

Address

Register

 

 

F0000000

Base address

 

 

F0000400

ConfigROM area

 

 

F0F00000

Base addresses for camera commands

 

 

F0F00000

CameraInitialize

 

 

F0F00100

Video Format Inq

 

 

F0F00180

Video Mode Inq

 

 

F0F00200

Frame Rate Inq

 

 

F0F00400

Basic Func Inq

 

 

F0F00500

Feature Element Inq

 

 

F0F00600

Isochronous Control register

 

 

F0F00800

FeatureControl

 

 

XCD-V50CR

9

XCD-V50