參數(shù)資料
型號： KSZ8873FLLI
廠商： Micrel Inc
文件頁數(shù)： 9/115頁
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
其它名稱： 576-3632
KSZ8873FLLI-ND
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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