參數(shù)資料
型號： SAF-XC2287M-72F80LAA
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： RISC MICROCONTROLLER, PQFP144
封裝： 0.50 mm pitch, GREEN, PLASTIC, LQFP-144
文件頁數(shù)： 117/142頁
文件大小： 1112K
代理商： SAF-XC2287M-72F80LAA
XC2287M, XC2286M, XC2285M
XC2000 Family Derivatives / Base Line
Functional Description
Data Sheet
76
V2.0, 2009-03
3.13
Universal Serial Interface Channel Modules (USIC)
The XC228xM features several USIC modules (USIC0, USIC1, USIC2, USIC3), each
providing two serial communication channels.
The Universal Serial Interface Channel (USIC) module is based on a generic data shift
and data storage structure which is identical for all supported serial communication
protocols. Each channel supports complete full-duplex operation with a basic data buffer
structure (one transmit buffer and two receive buffer stages). In addition, the data
handling software can use FIFOs.
The protocol part (generation of shift clock/data/control signals) is independent of the
general part and is handled by protocol-specific preprocessors (PPPs).
The USIC’s input/output lines are connected to pins by a pin routing unit. The inputs and
outputs of each USIC channel can be assigned to different interface pins, providing great
flexibility to the application software. All assignments can be made during runtime.
Figure 10
General Structure of a USIC Module
The regular structure of the USIC module brings the following advantages:
Higher flexibility through configuration with same look-and-feel for data management
Reduced complexity for low-level drivers serving different protocols
Wide range of protocols with improved performances (baud rate, buffer handling)
USIC_basic.vsd
Bu
sI
n
te
rf
ac
e
DBU
0
DBU
1
Control 0
Control 1
DSU
0
DSU
1
PPP_A
PPP_B
PPP_C
PPP_D
PPP_A
PPP_B
PPP_C
PPP_D
P
in
R
o
ut
in
g
S
h
e
ll
Buffer & Shift Structure Protocol Preprocessors
Pins
Bus
fsys
Fractional
Dividers
Baud rate
Generators
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