PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 406

• Manufacturer Part Number: PM5381-BI
• Description: ATM UNI, Single Channel ATM PHY Interface for 2488.32Mbps
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000489, Issue 4
Register 0778H: TXSDQ FIFO Indirect Address
This is an indirect register that is used to specify the address of the FIFO for which the user is
setting up or reading the setup. This register is the common address used for the three indirect
setup registers: 0779H FIFO Indirect Configuration, 077AH FIFO Indirect Buffer and 077BH
Data Available Thresholds plus the 077CH FIFO Indirect Cells and Packets Count. See also
section 13.19: Accessing Indirect Registers.
A FIFO needs to be configured according to a set of rules defined in the Operation section. In
order to change the current setup of a FIFO, it is recommended that the user reads the existing
setup information first, makes any modifications as required, and writes back the information.
PHYID[5:0]
EMPTY
Bit
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
This field should be set to all zeros.
This read-only indirect-access register bit indicates if the requested FIFO is empty. When
this bit is read as 1, the FIFO number specified in PHYID[5:0] in this register is empty.
Before reconfiguring a disabled FIFO, this bit needs to be sampled at logic 1 indicating that
the FIFO is empty. Note that a read to this register bit must be preceded by a write to this
register with RWB (bit 14) set to logic 1, and the PHYID set to all-zeros. Then the register
may be read and the EMPTY bit checked. See Section 13.19 for the procedure to access
indirect register bits.
R
Type
R/W
W
R
R/W
R/W
R/W
R/W
R/W
R/W
BUSY
RWB
FLUSH
EMPTY
Unused
Unused
PHYID[5]
PHYID[4]
PHYID[3]
PHYID[2]
PHYID[1]
PHYID[0]
Function
Unused
Unused
Unused
Unused
S/UNI-2488 Telecom Standard Product Datasheet
Default
0
0
0
1
X
X
X
X
X
X
0
0
0
0
0
0
Released
406