參數(shù)資料
型號(hào)： SMJ320C40TABM40/10
廠商： TEXAS INSTRUMENTS INC
元件分類： 數(shù)字信號(hào)處理
英文描述： 32-BIT, 40 MHz, OTHER DSP, UUC325
封裝： TAB-325
文件頁數(shù)： 34/64頁
文件大?。?/td> 1155K
代理商： SMJ320C40TABM40/10
SMJ320C40, TMP320C40
DIGITAL SIGNAL PROCESSORS
SGUS017H OCTOBER 1993 REVISED OCTOBER 2001
4
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
communication ports
(continued)
D Separate 8-word-deep input and output FIFO buffers for processor-to-processor communication and I/O
D Automatic arbitration and handshaking for direct processor-to-processor connection
communication-port software reset (C40 silicon revision
≥ 5.0)
The input and output FIFO levels for a communication port can be flushed by writing at least two back-to-back
values to its communication-port software-reset address as specified in Table 1. This feature is not present in
C40 silicon revision < 5.0. This software reset flushes any word or byte already present in the FIFOs but it does
not
affect
the
status
of
the
communication-port
pins.
Figure
1
shows
an
example
of
communication-port-software reset.
Table 1. Communication-Port Software-Reset Address
0
0x0100043
1
0x0100053
2
0x0100063
3
0x0100073
4
0x0100083
5
0x0100093
; -;
; RESET1:Flush’s FIFO data for communication port 1;
; -;
RESET1 push
AR0
; Save registers
push
R0
;
push
RC
;
ldhi
010h,AR0
; Set AR0 to base address of COM 1
or
050h,AR0
;
flush: rpts
1
; Flush FIFO data with back-to-back write
sti
R0,*+AR0(3)
;
rpts
10
; Wait
nop
;
ldi
*+AR0(0),R0
; Check for new data from other port
and
01FE0h,R0
;
bnz
flush
;
pop
RC
; Restore registers
pop
R0
;
pop
AR0
;
rets
; Return
Figure 1. Example of Communication-Port-Software Reset
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