PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
Register 0x202:RIPP Indirect Memory Access Control
Bit
Type
Function
Default
15
14
13
12:10
9:0
RO
R/W
R/W
MEM_BUSY
MEM_RWB
MEM_SEL
Reserved
0
0
0
R/W
MEM_ADDR
0
This register controls the indirect access to the internal memory area. There are
two separate RAMs used by RIPP. One is the configuration memory, which holds
the configuration information for all groups and links programmed by the
microprocessor; the other is the context memory, which stores the state context
used as the working space for the RIPP internal state machine. Each of them is
32-bits wide and contains 1024 words.
MEM_ADDR:
The indirect memory address (MEM_ADDR [9:0]) indicates the memory word
address to be read or written.
The memory-address organization of the internal RAMs is shown in Table 6 and
Table 7.
Table 6 Configuration Memory Address Space
Address space
0x000 – 0x03F
0x040 – 0x29F
0x2A0 – 0x2A7
0x2A8 – 0x34F
0x350 – 0x357
0x358 – 0x3FF
Description
Group configuration record area.
Reserved
TX link configuration record area.
Reserved
RIPP RX Link Configuration Record area.
Reserved
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
150
PMC [ PMC-SIERRA, INC ]
