參數(shù)資料
型號(hào): KSZ8873FLLI
廠商: Micrel Inc
文件頁(yè)數(shù): 9/115頁(yè)
文件大?。?/td> 0K
描述: IC ETHERNET SWITCH 3PORT 64LQFP
產(chǎn)品培訓(xùn)模塊: KSZ8873 Ethernet Switches
標(biāo)準(zhǔn)包裝: 160
控制器類型: 以太網(wǎng)開(kāi)關(guān)控制器
接口: MII
電源電壓: 1.8V,2.5V,3.3V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-LQFP(10x10)
包裝: 托盤(pán)
其它名稱: 576-3632
KSZ8873FLLI-ND
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PIC16(L)F1508/9
DS41609A-page 106
Preliminary
2011 Microchip Technology Inc.
10.4
User ID, Device ID and
Configuration Word Access
Instead of accessing program memory, the User ID’s,
Device ID/Revision ID and Configuration Words can be
accessed when CFGS = 1 in the PMCON1 register.
This is the region that would be pointed to by
PC<15> = 1, but not all addresses are accessible.
Different access may exist for reads and writes. Refer
When read access is initiated on an address outside
the
parameters
listed
in
the
PMDATH:PMDATL register pair is cleared, reading
back ‘0’s.
TABLE 10-2:
USER ID, DEVICE ID AND CONFIGURATION WORD ACCESS (CFGS = 1)
EXAMPLE 10-4:
CONFIGURATION WORD AND DEVICE ID ACCESS
Address
Function
Read Access
Write Access
8000h-8003h
User IDs
Yes
8006h
Device ID/Revision ID
Yes
No
8007h-8008h
Configuration Words 1 and 2
Yes
No
* This code block will read 1 word of program memory at the memory address:
*
PROG_ADDR_LO (must be 00h-08h) data will be returned in the variables;
*
PROG_DATA_HI, PROG_DATA_LO
BANKSEL
PMADRL
; Select correct Bank
MOVLW
PROG_ADDR_LO
;
MOVWF
PMADRL
; Store LSB of address
CLRF
PMADRH
; Clear MSB of address
BSF
PMCON1,CFGS
; Select Configuration Space
BCF
INTCON,GIE
; Disable interrupts
BSF
PMCON1,RD
; Initiate read
NOP
; Executed (See Figure 10-2)
NOP
; Ignored (See Figure 10-2)
BSF
INTCON,GIE
; Restore interrupts
MOVF
PMDATL,W
; Get LSB of word
MOVWF
PROG_DATA_LO
; Store in user location
MOVF
PMDATH,W
; Get MSB of word
MOVWF
PROG_DATA_HI
; Store in user location
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