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DSP56857 데이터시트(PDF) 240 Page - Freescale Semiconductor, Inc

부품명 DSP56857
상세설명  Digitial Signal Controller
PDF  662 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

DSP56857 데이터시트(HTML) 240 Page - Freescale Semiconductor, Inc

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Block Diagram
5685X Digital Signal Controller User Manual, Rev. 4
10-4
Freescale Semiconductor
10.3 Block Diagram
Figure 10-1. SCI Block Diagram
10.4 External Pin Descriptions
10.4.1 Transmit Data (TXD) Pin
The Transmit Data (TXD) pin is the SCI transmitter pin. TXD is available for general- purpose
I/O when it is not configured for transmitter operation, such as TE = 0.
10.4.2 Receiver Data (RXD) Pin
The Receiver Data (RXD) pin is the SCI receiver pin. RXD is available for general- purpose I/O
when it is not configured for receiver operation, such as RE = 0.
Data in Table 10-1 are external I/O signals for the chip interface.
Table 10-1. External I/O Signals
Signal Name
I/O Type
Description
Reset State
TXD
Output
Transmit Data Pin
1
RXD
Input
Receiver Data Pin
—
SCI Data
Receive
Shift Register
SCI Data
Register
Transmit
Shift Register
Register
Baud Rate
Generator
SBR12–SBR0
RXD
TXD
Module
Transmit
Control
÷16
Receive
and Wake up
Data Format
Control
Control
PF
FE
NF
OR
RERR
RDRF
TIIE
TIDLE
RIDLE
RAF
LOOP
RWU
RE
PE
POL
PT
WAKE
M
Clock
RERR
REIE
TIDLE
INTERRUPT
INTERRUPT
Pin
RSRC
SBK
LOOP
TE
RSRC
REQUEST
REQUEST
RIIE
RIDLE
INTERRUPT
REQUEST
TEIE
TDRE
TDRE
INTERRUPT
REQUEST
TDE
REQUEST
TDMA
RDMA
RFIE
REQUEST
RDRF/OR
INTERRUPT
REQUEST
RDME
Pin



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