Glueless Read Fifo Interface; Fifo Read Mode - Read Timing (Glueless Case) - Texas Instruments TMS320C6201 Reference Manual

8.4.2.2 Read FIFO Interface
Figure 8–10. Glueless Read FIFO Interface
Figure 8–11.FIFO Read Mode – Read Timing (glueless case)
XFCLK
XCE3
XOE
XD[31:0]
The read FIFO interface can be accomplished gluelessly in XCE3 space or
with a small amount of glue in any XCE space. If a glueless read FIFO interface
is used (specified by boot configuration selection), the XOE signal is only en-
abled in XCE3 space, and is dedicated to use for the FIFO interface. If this
mode is selected at boot, the XOE signal is disabled in all other XCE spaces .
In this mode, XCE3 is used as the read enable signal and XOE is used as the
output enable signal of the FIFO. Figure 8–10 shows this interface
(Figure 8–11 shows the timing diagram for this interface). If the glueless read
FIFO mode is not chosen, then a minimal amount of glue can be used in any
XCE space specified as a FIFO interface. Figure 8–8 shows the required glue.
Figure 8–12 shows the timing diagram for the case when glue logic is used to
read from FIFO.
Expansion
bus
'C6000 sample1
D1
XFCLK
XCE3
XOE
XWE
XRE
EXT_INTx
XD[31:0]
Sample2
D2
Expansion Bus I/O Port Operation
RCLK WCLK
REN WEN
OE
Synchronous
FIFO
EF
FF
HF
Q[31:0] D[31:0]
Sample3
Sample4
Sample5
D3 D4 D5
Expansion Bus 8-17