參數(shù)資料
型號: TMS320AV120
英文描述: Digital Audio Decoder & Support
中文描述: 數(shù)字音頻解碼器
文件頁數(shù): 58/132頁
文件大小: 1707K
代理商: TMS320AV120
SPRS145G
JULY 2000
REVISED FEBRUARY 2002
58
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
1443
serial peripheral interface (SPI) module (continued)
Figure 14 is a block diagram of the SPI in slave mode.
S
S
Clock
Polarity
SPICCR.6
Talk
Internal
Clock
4
5
6
0
1
2
SPI Bit Rate
State Control
SPIRXBUF
Buffer Register
16
Clock
Phase
SPICTL.3
1
2
3
0
Receiver
Overrun Flag
SPICTL.4
Overrun
INT ENA
SPICCR.3
0
SPIBRR.6
0
SPIRXBUF.15
0
SPIDAT.15
0
SPICTL.1
M
S
M
Master/Slave
SPI INT FLAG
SPICTL.0
SPI INT
ENA
SPISTS.7
SPIDAT
Data Register
SPISTS.6
M
S
SPICTL.2
SPI Char
External
Connections
SPISIMO
SPISOMI
SPISTE
SPICLK
SW2
S
M
M
S
SW3
To CPU
M
SW1
SPIPRI.6
SPI Priority
Level 1
INT
Level 5
INT
1
0
SPITXBUF.15
0
3
16
SPITXBUF
Buffer Register
NOTE A: The diagram is shown in the slave mode.
The SPISTE pin is driven low externally. Note that SW1, SW2, and SW3 are closed in this configuration. Refer to the following erratas for
restrictions on using the SPISTE pin:
TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A DSP Controllers Silicon Errata
(literature number SPRZ002)
TMS320LC2406A, TMS320LC2404A, TMS320LC2402A DSP Controllers Silicon Errata
(literature number SPRZ185)
Figure 14. Four-Pin Serial Peripheral Interface Module Block Diagram
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