HFC-SUSB Cologne Chip AG, HFC-SUSB Datasheet - Page 70

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

863 C EC2
7.4
Figure 13: EEPROM circuitry
The external EEPROM is optional. To use the USB configuration data from the internal ROM EE_SCL
must be connected to GND like shown in the circuitry below.
Figure 14: Circuitry to use USB configuration data from internal ROM
JP1 must be closed to select generic descriptors; JP2 must be closed to select communication class
descriptors (see also: USB configuration data on page 18).
' _V ("
G N D
V C C
G N D
1
1
J P 1
J U MP E R
J P 2
J U MP E R
EEPROM circuitry
1
2
3
7
2
2
U 1
A 0
A 1
A 2
TE S T
X24C 16
G N D
V C C
S D A
S C L
8
5
6
45
46
V C C
U 1
E E _S D A
E E _S C L
H F C -S U S B
R 1
10k
R 2
10k
45
46
U 2
E E _S D A
E E _S C L
H F C -S U S B
Cologne
Chip
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