参数资料
型号: MC68HC58DW
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 1 CHANNEL(S), LOCAL AREA NETWORK CONTROLLER, PDSO28
封装: SOIC-28
文件页数: 63/102页
文件大小: 700K
代理商: MC68HC58DW
MC68HC58
DATA LINK CONTROLLER OPERATION
MOTOROLA
TECHNICAL DATA
4-19
Figure 4-12 Host/DLC Serial Mode Receive Routine (Part 2 of 2)
LOAD “FLUSH BYTE” COMMAND BYTE
DLC HOST REC FLOW 2
YES
NO
DOES COMPLETION CODE
DISCARD MESSAGE DATA
C
BIT COMBINATION INTO SPI DATA
REGISTER, INITIATING SPI TRANSFER
IS SPI TRANSFER COMPLETE?
NO
YES
RETRIEVE COMPLETION CODE FROM
SPI DATA REGISTER
NEGATE DLC CS
INDICATE VALID DATA?
YES
NO
DOES COMPLETION CODE
B
INDICATE MORE DATA?
END RX DATA ROUTINE
F
D
ASSERT DLC CS
LOAD DUMMY DATA BYTE INTO SPI
DATA REGISTER, INITIATING SPI
TRANSFER
IS SPI TRANSFER COMPLETE?
NO
YES
E
ASSERT DLC CS
E
LOAD DUMMY DATA BYTE INTO SPI
DATA REGISTER, INITIATING SPI
TRANSFER
IS SPI TRANSFER COMPLETE?
NO
YES
RETRIEVE COMPLETION CODE
NEGATE DLC CS
FROM SPI DATA REGISTER
F
IS SPI TRANSFER COMPLETE?
NO
YES
LOAD “FLUSH MESSAGE” COMMAND
BYTE BIT COMBINATION INTO SPI
DATA REGISTER, INITIATING SPI
TRANSFER
NEGATE DLC CS
MINIMUM 2.5
S DELAY BETWEEN
NEGATION AND ASSERTION OF CS
IS SPI TRANSFER COMPLETE?
NO
YES
LOAD “FLUSH BYTE” COMMAND BYTE
BIT COMBINATION INTO SPI DATA
REGISTER, INITIATING SPI TRANSFER
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