Expansion Bus Signals - Texas Instruments TMS320C6201 Reference Manual

8.2 Expansion Bus Signals

Table 8–1. Expansion Bus Signals
Expansion
(I/O/Z)
Bus Signal
XD[31:0] I/O/Z
XFCLK
XCLKIN
XCE0 O
XCE1 O
XCE2 O
XCE3 O
XBE0 / XA2 O/Z
XBE1 / XA3 O/Z
XBE2 / XA4 O/Z
XBE3 / XA5 O/Z
XOE O
XRE O
XWE O
XAS
XRDY I
XW / R
XBLAST
XHOLD I/O/Z
XHOLDA I/O/Z
XCNTL
XBOFF
XCS
Table 8–1 lists the expansion bus signals and their functionality in each mode.
I/O Port Mode
(Non-Exclusive)
Async Sync FIFO
Signal (I/O/Z)
D[31:0] I/O/Z
O
CS O RE/WE/CS
CS O RE/WE/CS
CS O RE/WE/CS
CS O RE/WE/CS
XA2 O/Z
XA3 O/Z
XA4 O/Z
XA5 O/Z
OE O
RE O
WE O
XRDY
HOLD I/O/Z
HOLDA I/O/Z
Signal (I/O/Z)
D[31:0] I/O/Z D[31:0]
XFCLK
I
XA2 I/O/Z
XA3 I/O/Z
XA4 I/O/Z
XA5 I/O/Z
OE
RE
WE O
I/O/Z
I/O/Z READY
I/O/Z
I/O/Z
HOLD I/O/Z
HOLDA I/O/Z HOLDA
I
I
I
Expansion Bus Signals
Mutually Exclusive
Host Port Modes
Sync
Mode (I/O/Z) Async Mode
I/O/Z
CLK
BE0 I
BE1 I
BE2 I
BE3 I
WAIT
AS
O/Z
W/R I
BLAST
HOLD I/O/Z
I/O/Z
CNTL I
BOFF
CS I
Expansion Bus
D[31:0]
BE0
BE1
BE2
BE3
READY
W/R
HOLD
HOLDA
CNTL
CS
8-5