參數(shù)資料
型號: SAB82525N
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 2 CHANNEL(S), 4M bps, MULTI PROTOCOL CONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 125/126頁
文件大?。?/td> 730K
代理商: SAB82525N
Semiconductor Group
98
SAB 82525
SAB 82526
SAF 82525
SAF 82526
Receive HDLC Control Register (READ)
RHCR
(29/69)
70
RHCR
Value of the HDLC control field corresponds to the last received frame.
RHCR is duplicated into RFIFO for every frame.
Note:
Mode
Auto-mode,1-byte address
(U-frames) (Note 1)
Auto-mode, 2-byte address
(U-frames) (Note 1)
Auto-mode, 1-byte address
(I-frames) (Note 1)
Auto-mode, 2-byte address
(I-frames) (Note 1)
Modulo 8 (MCS = 0)
Control field
Modulo 128 (MCS = 1)
Control field
(Note 2)
Control field
(Note 2)
Control field in
compressed form (Note 3)
Control field in
compressed form (Note 3)
Contents of RHCR
Non-auto mode,
1-byte address
Non-auto mode,
2-byte address
Transparent
mode 1
Transparent
mode 0
2nd byte after flag
3rd byte after flag
2nd byte after flag
S-frames are handled automatically and are not transferred to the microprocessor.
Note 1:
For I-frames (bit 0 of RHCR = 0) the compressed control field has the same format
as in the modulo 8 case, but only the three LSB’s of the receive and transmit
counters are visible:
Note 3:
For U-frames (bit 0 of RHCR = 1) the control field is as in the modulo 8 case.
Note 2:
N(R)
P
N(S)
0
bit
7
6
5
4
3210
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