HFC-4S Cologne Chip AG, HFC-4S Datasheet - Page 137

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

4.4.2 Read only registers
(See Table 4.3 for reset value.)
(See Table 4.3 for reset value.)
(See Table 4.3 for reset value.)
March 2003 (rev. A)
HFC-4S
HFC-8S
A_Z1L [FIFO]
FIFO input counter
This address can also be accessed with word and double word width to read the com-
plete
Before reading this array register the FIFO must be selected by the register R_FIFO.
7..0
A_Z1H [FIFO]
FIFO input counter
Before reading this array register the FIFO must be selected by the register R_FIFO.
7..0
A_Z1 [FIFO]
FIFO input counter
Before reading this array register the FIFO must be selected by the register R_FIFO.
15..0
Bits
Bits
Bits
½
-counter or
Value
Value
Value
Reset
Reset
Reset
V_Z1L
V_Z1H
V_Z1
Name
Name
Name
½
- and
½
½
½
, low byte
, high byte
FIFO handling and HDLC controller
¾
-counters together (see registers A_Z1 and A_Z12).
(read only)
(read only)
(read only)
Data Sheet
Description
Bits [7..0] counter value of ½
Description
Bits [15..8] counter value of ½
Description
Bits [15..0] counter value of ½
Cologne
Chip
137 of 273
0x04
0x05
0x04