PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
Register 399H: EXSBI Link Enable Busy
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Unused
Unused
Unused
Unused
Unused
Unused
Unused
BUSY
X
X
X
X
X
X
X
0
R
BUSY:
A write to the EXSBI Link Enable Register sets BUSY to ‘1’. BUSY is cleared to ‘0’
approximately three REFCLK cycles later after the register contents have been synchronized
to REFCLK.
The user must check that BUSY is ‘0’ before writing to the EXSBI Link Enable Register.
Following a reset, BUSY will be ‘1’ until startup circuitry has finished automatically initializing
certain RAMs within EXSBI.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
104
PMC [ PMC-SIERRA, INC ]
