參數(shù)資料
型號： TMP320C40
廠商： Texas Instruments, Inc.
元件分類： 數(shù)字信號處理
英文描述： DIGITAL SIGNAL PROCESSORS
中文描述： 數(shù)字信號處理器
文件頁數(shù)： 4/62頁
文件大?。?/td> 1066K
代理商： TMP320C40
SGUS017H
–
OCTOBER 1993
–
REVISED OCTOBER 2001
4
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
–
1443
communication ports
(continued)
Separate 8-word-deep input and output FIFO buffers for processor-to-processor communication and I/O
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
push
R0
push
RC
ldhi
010h,AR0
or
050h,AR0
flush: rpts
1
sti
R0,*+AR0(3)
rpts
10
nop
ldi
*+AR0(0),R0
and
01FE0h,R0
bnz
flush
pop
RC
pop
R0
pop
AR0
rets
Figure 1. Example of Communication-Port-Software Reset
; Save registers
;
;
; Set AR0 to base address of COM 1
;
; Flush FIFO data with back-to-back write
;
; Wait
;
; Check for new data from other port
;
;
; Restore registers
;
;
; Return
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