PM7312 pmc-sierra, PM7312 Datasheet - Page 42

• Manufacturer Part Number: PM7312
• Description: Freedm 32a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021833, Issue 2
Table 5 Context Memory Synchronous SSRAM Interface (57 Signals)
Pin Name
CCDAT[0]
CCDAT[1]
CCDAT[2]
CCDAT[3]
CCDAT[4]
CCDAT[5]
CCDAT[6]
CCDAT[7]
CCDAT[8]
CCDAT[9]
CCDAT[10]
CCDAT[11]
CCDAT[12]
CCDAT[13]
CCDAT[14]
CCDAT[15]
CCDAT[16]
CCDAT[17]
CCDAT[18]
CCDAT[19]
CCDAT[20]
CCDAT[21]
CCDAT[22]
CCDAT[23]
CCDAT[24]
CCDAT[25]
CCDAT[26]
CCDAT[27]
CCDAT[28]
CCDAT[29]
CCDAT[30]
CCDAT[31]
CCDAT[32]
CCDAT[33]
CCDAT[34]
CCDAT[35]
CCADD[0]
CCADD[1]
CCADD[2]
CCADD[3]
CCADD[4]
CCADD[5]
CCADD[6]
CCADD[7]
CCADD[8]
CCADD[9]
CCADD[10]
CCADD[11]
CCADD[12]
CCADD[13]
CCADD[14]
CCADD[15]
CCADD[16]
CCADD[17]
CCWEB
Type
I/O
Output
Output
Pin No.
A20
B20
C20
D20
E20
B21
C21
D21
A22
B22
C22
D22
A23
E22
B23
C23
D23
A24
E23
D24
A25
E24
C25
D25
B26
E25
C26
A27
D26
B27
E26
C27
B28
D27
E28
D30
J31
K27
J28
H31
J27
H30
H29
H28
G31
G30
G29
G28
F30
G27
F29
E31
F28
E30
F27
FREEDM 32A1024L ASSP Telecom Standard Product Data Sheet
Function
Context Memory SSRAM Data. The bi-directional SSRAM data bus
pins interface directly with the synchronous SSRAM data ports.
The FREEDM 32A1024L presents valid data on the CCDAT[35:0]
pins upon the rising edge of SYSCLK during write cycles. CCDAT
[35:0] is tristated on the rising edge of SYSCLK for read cycles.
CCDAT [35:0] is sampled/updated/tristated on the rising edge of
SYSCLK.
Context Memory SSRAM Address. The SSRAM address outputs
identify the SSRAM locations accessed.
CCADD[17:0] is updated on the rising edge of SYSCLK.
Context Memory SSRAM Write Bar. CCWEB determines the cycle
type when CCSELB is asserted low. When CCWEB is asserted
high, the cycle type is a read. When CCWEB is asserted low, the
Released
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