HFC-SP Cologne Chip AG, HFC-SP Datasheet - Page 12

• Manufacturer Part Number: HFC-SP
• Description: Isdn S/t HDLC Basic Rate Controller
• Manufacturer: Cologne Chip AG

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2.2
See also: 7.2 External transmitter circuitry.
2.3
See also: 7.1 External receiver circuitry.
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Pin No.
Pin No.
31
32
49
34
35
36
37
38
43
44
45
46
48
S/T interface transmit signals
S/T interface receive signals
BUSDIR
/INPACK
ALE
MODE
TX2_HI
/TX1_LO
/TX_EN
/TX2_LO
TX1_HI
R2
LEV_R2
LEV_R1
R1
ADJ_LEV
Pin Name
Pin Name
Output
Output
Input
Input
O
O
I
I
O
O
O
O
O
O
I
I
I
I
1,2,3,4,5
6
Transmit enable
Function
Transmit output 2
GND driver for transmitter 1
GND driver for transmitter 2
Transmit output 1
Receive data 2
Receive data 1
Level detect for R2
Level detect for R1
Levelgenerator
Mode
Function
Databus direction signal for external busdriver
'0'
Input port acknowledge (low active)
Address latch enable
ALE is also used for mode selection of the HFC-SP.
See Mode selection on page 8 for detailed
information.
Mode selection
See Mode selection on page 8 for detailed
information.
BD0-BD7 are outputs
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Cologne
Chip