參數(shù)資料
型號(hào): MK50H27Q25
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 1 CHANNEL(S), 51M bps, SERIAL COMM CONTROLLER, PQCC52
封裝: PLASTIC, LCC-52
文件頁(yè)數(shù): 25/58頁(yè)
文件大?。?/td> 621K
代理商: MK50H27Q25
4.2.4 Receive Descriptor Ring Pointer
BIT
NAME
DESCRIPTION
15
0
Reserved, must be written as a zero.
14:12
RLEN
RECEIVE RING LENGTH is the number of entries in the Receive
Descriptor Ring expressed as a power of two.
RLEN
Number of Entries
01
12
24
38
416
532
664
7
128
11:08
0
Reserved, must be written as zeroes.
07:00/15:00
RDRA
RECEIVE DESCRIPTOR RING ADDRESS is the base address
(lowest address) of the Receive Descriptor Ring. The Receive De-
scriptor Address must begin on a word boundary.
4.2.5 Transmit Descriptor Ring Pointer
1
5
1
4
1
3
0
7
0
8
1
0
1
2
0
1
0
2
0
3
0
4
0
5
0
9
0
6
IADR + 36
IADR + 38
RDRA<15:00>
0
RLEN
0000
RDRA<23:16>
1
5
1
4
1
3
0
7
0
8
1
0
1
2
0
1
0
2
0
3
0
4
0
5
0
9
0
6
IADR + 40
IADR + 42
TDRA<15:00>
0
TLEN
0000
TDRA<23:16>
MK50H27
31/56
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