PM5364 pmc-sierra, PM5364 Datasheet - Page 205

• Manufacturer Part Number: PM5364
• Description: Tupp 2488 Assp Telecom Standard
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
To perform an indirect read/write to the Switch Control RAM, the following steps must be
followed.
Poll BUSY bit
If BUSY bit is low, write to REG offset 03H
Write to REG 02H.
The MSU-Lite has the ability of overwrite its outputs when an invalid address is programmed
into the Switch RAM. When a location in the Switch RAM is programmed with bits [13:12] =
‘b11, the value output on the MSU-Lite output signals will be as shown in Table 38. Note that
V5 and TPL are unused in the egress path
Table 38 IN_BYTE Format
Table 39 Overwrite Function Lookup Table
IN_BYTE
[13]
1
[12]
1
[11]
MODE[2]
[10]
MODE[1]
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
[9]
MODE[0]
Reserved
[8]
[7:0]
ODATA[7:0]
Released
205