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UPSD3312D Datasheet(PDF) 201 Page - STMicroelectronics

Part # UPSD3312D
Description  fast 8032 MCU with programmable logic
PDF  272 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3312D Datasheet(HTML) 201 Page - STMicroelectronics

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Obsolete
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UPSD33xx
PSD module
Doc ID 9685 Rev 7
201/272
Figure 65.
Detail of a Single OMC
27.4.29
OMC allocator
Outputs of the 16 OMCs can be routed to a combination of pins on Port A (80-pin devices
only), Port B, or Port C as shown in Figure 66. OMCs are routed to port pins automatically
after specifying pin numbers in PSDsoft Express. Routing can occur on a bit-by-bit basis,
spitting OMC assignment between the ports. However, one OMC can be routed to one only
port pin, not both ports.
27.4.30
Product term allocator
Each OMC has a Product Term Allocator as shown in Figure 65 on page 201. PSDsoft
Express uses PT Allocators to give and take product terms to and from other OMCs to fit a
logic design into the available silicon resources. This happens automatically in PSDsoft
Express, but understanding how PT allocation works will help the user if the logic design
does not “fit,” in which case the user may try selecting a different pin or different OMC for the
D
CLR
PRE
Q
MUX
MUX
M
U
X
M
U
X
PSDsoft
PSDsoft
OUTPUT MACROCELL (OMC)
PT PRESET (.PR)
FROM AND-OR ARRAY
BORROWED
PTs
PT CLEAR (.RE)
NODE FEEDBACK (.FB)
POLARITY
SELECT,
PSDsoft
PT ALLOCATOR,
DRAWS FROM LOCAL
AND GLOBAL UNUSED
PRODUCT TERMS.
PSDsoft DICTATES.
LENDED
PTs
DATA BIT FROM 8032
DATA BIT TO 8032
INDICATES MCU WRITE
TO PARTICULAR CSIO
OMC REGISTER
MCU OVERRIDES
PT PRESET AND
CLR DURING
MCU WRITE
MCU READ OF
PARTICULAR CSIOP
OMC REGISTER
OMC
OUTPUT
FROM AND-OR ARRAY
TO PLD INPUT BUS
FROM AND-OR ARRAY
NATIVE PTs
ALLOCATED PTs
PT CLOCK (.C)
FROM AND-OR ARRAY
GLOBAL CLOCK (CLKIN)
FROM PLD INPUT BUS
OMC
ALLO-
CATOR
O
U
T
PRODUCT TERMS
FROM OTHER
OMCs
AI06617A



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