HFC-4S Cologne Chip AG, HFC-4S Datasheet - Page 141

• Manufacturer Part Number: HFC-4S
• Description: Isdn HDLC Fifo Controller With 8 (4) Integrated S/t Interfaces
• Manufacturer: Cologne Chip AG

4.4.3 Read / write registers
March 2003 (rev. A)
HFC-4S
HFC-8S
A_FIFO_DATA0 [FIFO]
FIFO data register
This address can also be accessed with word and double word width to access two or
four data bytes (see registers A_FIFO_DATA1 and A_FIFO_DATA2).
Before writing or reading this array register the FIFO must be selected by the register
R_FIFO.
7..0
A_FIFO_DATA1 [FIFO]
FIFO data register
Before writing or reading this array register the FIFO must be selected by the register
R_FIFO.
15..0
Bits
Bits
0
0
Value
Value
Reset
Reset
V_FIFO_DATA0
V_FIFO_DATA1
Name
Name
FIFO handling and HDLC controller
(read / write)
(read / write)
Data Sheet
Data word
Description
Data byte
Read / write one byte from / to the FIFO selected in
the R_FIFO register and increment -counter by 1.
Description
Read / write one word from / to the FIFO selected in
the R_FIFO register and increment -counter by 2.
Cologne
Chip
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