PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Register 429H, 469H, 4A9H: RTTB, Indirect Tributary Select
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R/W
CPAGE
Unused
Unused
TUG2[2]
TUG2[1]
TUG2[0]
TU[1]
0
X
X
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
TU[0]
This register contains the identity of the tributary buffer to be accessed in an
indirect read or write operation.
TU[1:0]:
The tributary unit address bits (TU[1:0]) identifies the tributary within the
tributary unit group which is identified by the TUG2[2:0] bits. The combination
of TUG2[2:0] and TU[1:0] identifies the tributary buffer to be accessed
indirectly.
TUG2[2:0]:
The tributary unit group address bits (TUG2[2:0]) identifies the tributary unit
group. The combination of TUG2[2:0] and TU[1:0] identifies the tributary
buffer to be accessed indirectly.
CPAGE:
The capture page control bit (CPAGE) selects between accessing the capture
page and the expected page of the tributary buffer. When CPAGE is set high,
the indirect register access is targeted at the capture page. Reading from the
capture page returns the most recent tributary path trace message received
from the incoming stream. No de-bouncing is provided. When CPAGE is set
low, the indirect register access is targeted at the expected page. An expected
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
320
PMC [ PMC-SIERRA, INC ]
