參數(shù)資料
型號(hào): TMS320LC31-40
元件分類: 數(shù)字信號(hào)處理
英文描述: Digital Signal Processor
中文描述: 數(shù)字信號(hào)處理器
文件頁數(shù): 42/48頁
文件大小: 636K
代理商: TMS320LC31-40
TMS320C31, TMS320LC31
DIGITAL SIGNAL PROCESSORS
SPRS035B – MARCH 1996 – REVISED JANUARY 1999
42
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
changing the peripheral pin I/O modes
The following tables show the timing parameters for changing the peripheral pin from a general-purpose output
pin to a general-purpose input pin and vice versa. The numbers shown in Figure 29 and Figure 30 correspond
to those shown in the NO. column of the tables below.
timing parameters for peripheral pin changing from general-purpose output to input mode
(see Note 8 and Figure 29)
NO.
’LC31-33
’C31-40
’LC31-40
’C31-50
’C31-60
’C31-80
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
84
th(H1H)
Hold time, peripheral pin after
H1 high
15
13
10
8
6
ns
85
tsu(GPIO-H1L)
Setup time, peripheral pin
before H1 low
10
9
9
8
7
ns
86
th(H1L-GPIO)
Hold time, peripheral pin after
H1 low
0
0
0
0
0
ns
NOTE 8: Peripheral pins include CLKX0, CLKR0, DX0, DR0, FSX0, FSR0, and TCLK0/1. The modes of these pins are defined by the contents
of internal-control registers associated with each peripheral.
86
85
84
Value on Pin
Seen in
Peripheral-
Control
Register
Synchronizer Delay
Buffers Go
From
Output to
Input
Execution
of Store of
Peripheral-
Control
Register
Data Bit
Peripheral
Pin
(see Note A)
I/O
Control Bit
H1
H3
Output
Data
Seen
Data
Sampled
NOTE A: Peripheral pins include CLKX0, CLKR0, DX0, DR0, FSX0, FSR0, and TCLK0/1.
Figure 29. Timing for Change of Peripheral Pin From General-Purpose Output to Input Mode
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