参数资料
型号: KSZ8864RMN
厂商: Micrel Inc
文件页数: 42/111页
文件大小: 0K
描述: IC ETHERNET SW 4PORT 64QFN
标准包装: 348
控制器类型: 以太网开关控制器
接口: MII,RMII
电源电压: 1.8V,2.5V,3.3V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 64-VFQFN 裸露焊盘
供应商设备封装: 64-QFN(8x8)
包装: 托盘
配用: 576-3869-ND - BOARD EVALUATION FOR KSZ8864RMN
其它名称: 576-3787
KSZ8864RMN-ND
PIC16C9XX
DS30444E - page 36
1997 Microchip Technology Inc.
5.4
PORTD and TRISD Registers
PORTD is an 8-bit port with Schmitt Trigger input buff-
ers. The rst ve pins are congurable as general pur-
pose I/O pins or LCD segment drivers. Pins RD5, RD6
and RD7 can be digital inputs or LCD segment or com-
mon drivers.
TRISD controls the direction of pins RD0 through RD4
when PORTD is congured as a digital port.
EXAMPLE 5-4:
INITIALIZING PORTD
BCF
STATUS,RP0
;Select Bank2
BSF
STATUS,RP1
;
BCF
LCDSE,SE29
;Make RD<7:5> digital
BCF
LCDSE,SE0
;Make RD<4:0> digital
BSF
STATUS,RP0
;Select Bank1
BCF
STATUS,RP1
;
MOVLW 0x07
;Make RD<4:0> outputs
MOVWF TRISD
;Make RD<7:5> inputs
Note:
On a Power-on Reset these pins are con-
gured as LCD segment drivers.
Note:
To congure the pins as a digital port, the
corresponding bits in the LCDSE register
must be cleared. Any bit set in the LCDSE
register overrides any bit settings in the
corresponding TRIS register.
FIGURE 5-6:
PORTD<4:0> BLOCK
DIAGRAM
Data Bus
WR
RD
Data Latch
TRIS Latch
Schmitt
Trigger
input
buffer
Q
D
CK
Q
D
CK
EN
Q
D
EN
I/O pin
RD TRIS
LCDSE<n>
LCD
LCD Segment
Segment Data
Output Enable
PORT
TRIS
PORT
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