s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 310

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

HDLC CONTROLLERS
HDLC SPECIAL REGISTERS
The HDLC special registers are defined as read-only or write-only registers according to the direction of
information flow. The addresses of these registers are shown in Table 8-4 and 8-5.
The transmitter FIFO register can be accessed using two different addresses, the frame terminate address and
the frame continue address. The functions of these addresses are discussed in detail in the FIFO section below.
8-24
HMODE
HCON
HSTAT
HINTEN
HTxFIFOC
(Frame Continue)
HTxFIFOT
(Frame
Terminate)
HRxFIFO
HBRGTC
HPRMB
HSAR0
HSAR1
HSAR2
HSAR3
HMASK
HDMATxPTR
HDMARxPTR
HMFLR
HRBSR
Registers
0 7000
0 7004
0 7008
0 700c
0 7010
0 7014
0 7018
0 701c
0 7020
0 7024
0 7028
0 702c
0 7030
0 7034
0 7038
0 703c
0 7040
0 7044
Offset
Table 8-4. HDLC Channel A Special Registers
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
W
R
HDLC mode register
HDLC control register
HDLC status register
HDLC interrupt enable register
HTxFIFO frame continue register
HTxFIFO frame terminate register
HRxFIFO entry register
HDLC BRG time constant register
HDLC preamble register
HDLC station address 0
HDLC station address 1
HDLC station address 2
HDLC station address 3
HDLC mask register
DMA Tx buffer descriptor pointer
DMA Rx buffer descriptor pointer
Maximum frame length register
Receive buffer size register
Description
0 00000000
0 00000000
0 00000000
0 00000000
0 00000000
0 00000000
0 00000000
0 00000000
0 00000000
0 00000000
0 00000000
0 00000000
0 FFFFFFFF
0 FFFFFFFF
0 XXXX0000
0 XXXX0000
Reset Value
–
–
S3C4510B