PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
Pin Name
Type
Pin
No.
Function
CBA[11]
CBA[10]
CBA[9]
CBA[8]
CBA[7]
CBA[6]
CBA[5]
CBA[4]
CBA[3]
CBA[2]
CBA[1]
CBA[0]
Output
AA8 The Cell Buffer SDRAM Address (CBA[11:0])
W7
Y9
signals identify the row address (CBA[11:0]) and
column address (CBA[7:0]) for the locations
AA9 accessed.
AB9
The CBA[11:0] output is updated on the rising edge
W9
Y10
of SYSCLK.
AA10
AB10
W10
AB11
W11
CBBS[1]
CBBS[0]
Output W12 The Cell Buffer SDRAM Bank Select (CBBS[1:0])
AA12 signals determine which bank of a dual/quad bank
Cell Buffer SDRAM chip is active. CBBS is
generated along with the row address when
CBRASB is asserted low.
The CBBS[1:0] outputs are updated on the rising
edge of SYSCLK.
CBDQM
Output
Y12
The Cell Buffer SDRAM Input/Output Data Mask
(CBDQM) signal is held high until the SDRAM
initialization is complete and then set low for normal
operation.
The CBDQM output is updated on the rising edge of
SYSCLK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
29
PMC [ PMC-SIERRA, INC ]
