service manual dvd recorder drx-2

DRX-2
32
DRX-2
Nucleus Name DS_DVIO_LinkCommunication
Nucleus Number 702
Description Check the accessibility of the 1394 Link layer IC by writing to and reading from a specific
address
Technical - Initialise the PIO pins of the chrysalis
- Write a pattern to the CYCTM register of the link chip
- Read back and verify the pattern
Execution Time Less than 1 second
User Input None
Error Number Description
70200 Communicating with the link layer IC succeeded
70201 Communicating with the link layer IC failed
70202 Result of nucleus not according to HW diversity string
Example DS:> 702
070200:
Test OK @
Nucleus Name DS_DVIO_PhyCommunication
Nucleus Number 703
Description Check the accessibility of the 1394 Physical layer IC by writing to and reading from a specific
address
Technical - Initialise the PIO pins of the chrysalis
- Initialise IIC
- Write the data to be written to the phy-chip to the link chip first
- Wait until the link chip indicates that the data has been written to the phy
- Write the phy-access register in the Link chip to indicate phy read access
- Wait until the link chip has obtained the value from the phy-chip
- Test whether the value read back equals the one previously written
Execution Time Less than 1 second
User Input None
Error Number Description
70300 Communicating with the physical layer IC succeeded
70301 The physical layer IC was not accessible
70302 Communicating with the physical layer IC failed
70303 Result of nucleus not according to HW diversity string
Example DS:> 703
070300:
Test OK @