HFC-S Cologne Chip AG, HFC-S Datasheet - Page 8

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

2.2
See also: 7.2 External transmitter circuitry .
2.3
See also: 7.1 External receiver circuitry
2.4
March 1997
Pin No.
34
35
36
37
38
43
44
45
46
48
53
54
55
56
57
58
59
60
63
64
65
66
67
68
69
70
71
72
S/T interface transmit signals
S/T interface receive signals
SRAM Interface
TX2_HI
/TX1_LO
/TX_EN
/TX2_LO
TX1_HI
R2
LEV_R2
LEV_R1
R1
ADJ_LEV
SRD0
SRD1
SRD2
SRD3
SRD4
SRD5
SRD6
SRD7
SRA0
SRA1
SRA2
SRA3
SRA4
SRA5
SRA6
SRA7
SRA8
SRA9
Pin Name
Tristate
Output
Input
OT
OT
OT
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
.
Function
Transmit output 2
GND driver for transmitter 1
Transmit enable
GND driver for transmitter 2
Transmit output 1
Receive data 2
Level detect for R2
Level detect for R1
Receive data 1
Levelgenerator
SRAM data bus
SRAM data bit 0 (LSB)
SRAM data bit 1
SRAM data bit 2
SRAM data bit 3
SRAM data bit 4
SRAM data bit 5
SRAM data bit 6
SRAM data bit 7 (MSB)
SRAM address bus
SRAM address bus bit 0 (LSB)
SRAM address bus bit 1
SRAM address bus bit 2
SRAM address bus bit 3
SRAM address bus bit 4
SRAM address bus bit 5
SRAM address bus bit 6
SRAM address bus bit 7
SRAM address bus bit 8
SRAM address bus bit 9
HFC-S
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