MK50H25(1994) 데이터 시트보기 (PDF) - STMicroelectronics

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MK50H25
(Rev.:1994)

HIGH SPEED LINK LEVEL CONTROLLER

STMicroelectronics 

Figure 3: MK50H25 Memory Management Structure

CSR 2, CSR3

POINTER TO

INITIALIZATI ON BLOCK

INITIALIZATI ON BLOCK

MODE

FRAME ADDRESS

FIELDS

TIMER VALUES

RX DESCRIPTOR

POINTER

TX DESCRIPTOR

POINT ER

XID/TEST TRANSMIT

DESCRIPTOR POINTER

XID/TEST RECEIVE

DESCRIPTOR POINTER

ST ATUS

BUFFER ADDRESS

ERROR COUNTERS

STATUS BUFFER

XID/T EST

RECEIVE BUFFER

XID /TEST

TRANSMIT BUFFER

RECEIVER DESCRIPTOR RINGS

DESCRIPTOR 0

BUFFER STAT US

BUFFER ADDRESS

BUFF ER SIZE

BUFFER MSG COUNT

DESCRIPTOR 1

DESCRIPTOR M

TRANSMIT DESCRIPTOR RINGS

DESCRIPTOR 0

BUFFER STATUS

BUFFER ADDRESS

BUFF ER SIZE

BUFFER MSG COUNT

DESCRIPTOR 1

DESCRIPTOR N

MK50H25

RECEIVE BUFFER

BUFFER

0

BUFFER

1

BUFFER

M

TRAN SMIT BUFFER

BUFFER

0

BUFFER

1

BUFFER

N

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