2-7. Link Controller Address Locations
U3-1021 2-32 2/99
Westinghouse Proprietary Class 2C
Bit 0: After module reset, the Controller must write to the module’s configuration
register and set bit 0. Then the Controller can access other Serial Link module
registers with offsets less than 12. If the Controller has not set bit 0, any Controller
attempts to access address offsets less than 12 will yield an Attention status.
Bit 1: If the Controller sets this bit, any Controller attempts to access address offsets
less than 12 will yield an Attention status.
Bits 2 in the status register is reset if the internal application program is not present
or is not operating properly. It is set if an internal application program is present and
active.
Bits 3 through 15 are not defined in the Configuration register.
Bit 6 in the Status register is asserted by the FLC board’s processor when it wants
to illuminate the LLC board’s Internal Error LED.
Bit 7 in the Status register is asserted by the FLC board’s processor when it wants
to illuminate the LLC board’s External Error LED.
12 Not defined Not defined
13 Not defined Not defined
14 Not defined Not defined
15 Not defined Not defined
Table 2-8. Link Controller Configuration Register (Address 13 or D in Hex)
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