参数资料
型号: PSD511B1
英文描述: Field Programmable Microcontroller Peripherals(可编程逻辑,16K位SRAM,40个可编程I/O,通用PLD有61个输入)
中文描述: 现场可编程微控制器外围设备(可编程逻辑,16K的位的SRAM,40余个可编程输入/输出,通用PLD的有61个输入)
文件页数: 18/130页
文件大小: 704K
代理商: PSD511B1
PSD5XX Famly
6-18
Port B Macrocell Structure
Figure 7 shows the PB Macrocell block, which consists of 8 identical macrocells. Each
macrocell output can be connected to its own I/O pin on Port B. The two inputs, CLKIN and
MACRO-RST, are used as clock and clear inputs to all the macrocells. The CLKIN comes
directly from the CLKIN input pin. The MACRO-RST is the same as the Reset input pin
except it is user configurable.
The circuit of a PB Macrocell is shown in Figure 8. There are 10 product terms from the
GPLD’s AND ARRAY as inputs to the macrocell. Users can select the polarity of the output,
and configure the macrocell to operate as:
J
Registered Output
Select output from D flip flop.
J
Combinatorial Output
Select output from OR gate.
J
GPLD Input
Use Port B pin as dedicated input.
J
GPLD Output
Use Port B pin as dedicated output.
J
GPLD I/O
Use Port B pin as bidirectional pin.
J
Macrocell Feedback
Register feedback for state machine implementations or expander feedback
from the combinatorial output, to possibly expand the number of product terms
available to another macrocell.
In case of "Buried Feedback", where the output of the macrocell is not
connected to a Port B pin, Port B can be configured to perform other user
defined I/O functions.
Each D flip flop in the macrocells has its own dedicated asynchronous clear, preset and
clock input. The signals are defined as follow:
J
PRESET
Active only if defined by a product term (PBx.PR)
J
CLEAR
Two selectable inputs: Reset input or user defined product term (PBx.RE)
J
CLK
Two selectable inputs – CLKIN input or user defined product term (PBx.CLK).
The macrocell is operated in Synchronous Mode if the clock input is CLKIN, and is in
Asynchronous Mode if the clock is a product-term clock defined by the user.
ZPLDBlock
(Cont.)
相关PDF资料
PDF描述
PSD502B1 Field Programmable Microcontroller Peripherals(可编程逻辑,16K位SRAM,40个可编程I/O,通用PLD有61个输入)
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相关代理商/技术参数
参数描述
PSD511B1-12J 制造商:未知厂家 制造商全称:未知厂家 功能描述:Field-Programmable Peripheral
PSD511B1-12JI 制造商:未知厂家 制造商全称:未知厂家 功能描述:Field-Programmable Peripheral
PSD511B1-12LI 制造商:未知厂家 制造商全称:未知厂家 功能描述:Field-Programmable Peripheral
PSD511B1-12U 制造商:未知厂家 制造商全称:未知厂家 功能描述:Field-Programmable Peripheral
PSD511B1-12UI 制造商:未知厂家 制造商全称:未知厂家 功能描述:Field-Programmable Peripheral