HFC-4S Cologne Chip AG, HFC-4S Datasheet - Page 27

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

1.3.2 Differences between HFC-4S and HFC-8S
The HFC-4S and HFC-8S differ only in the number of S/T interfaces. Table 1.1 shows
all pins which are different between the two chips. Some of the listed pins have a sec-
ondary function. This is implemented for both chips and must be enabled in the register
R_GPIO_SEL.
T_A4 . . . T_A7 and T_B4 . . . T_B7 may output signals even in NC mode. The input pins
marked with ‘NC*’ in Table 1.1 should be tied to ground if they are not used as GPI function.
March 2003 (rev. A)
HFC-4S
HFC-8S
G
HFC-4S and HFC-8S are pin compatible except for S/T interface pins
listed in Table 1.1.
Please note !
124
125
126
127
128
130
131
132
133
135
136
137
138
139
142
143
144
145
146
148
149
150
151
153
154
155
156
157
Pin
R_A7
LEV_A7
LEV_B7
R_B7
ADJ_LEV7
T_A7
T_B7
T_B6
T_A6
ADJ_LEV6
R_B6
LEV_B6
LEV_A6
R_A6
R_A5
LEV_A5
LEV_B5
R_B5
ADJ_LEV5
T_A5
T_B5
T_B4
T_A4
ADJ_LEV4
R_B4
LEV_B4
LEV_A4
R_A4
Table 1.1: Pin differences of HFC-8S and HFC-4S
function of HFC-8S
normal
General description
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secondary
GPI31
GPI30
GPI29
GPI28
–
GPIO15
GPIO14
GPIO13
GPIO12
–
GPI27
GPI26
GPI25
GPI24
GPI23
GPI22
GPI21
GPI20
–
GPIO11
GPIO10
GPIO9
GPIO8
–
GPI19
GPI18
GPI17
GPI16
Data Sheet
normal
NC*
NC*
NC
NC
NC
NC
NC
NC
NC*
NC*
NC*
NC*
NC
NC
NC
NC
NC
NC
NC*
NC*
NC*
NC*
NC*
NC*
NC*
NC*
NC*
NC*
function of HFC-4S
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secondary
GPI31
GPI30
GPI29
GPI28
–
GPIO15
GPIO14
GPIO13
GPIO12
–
GPI27
GPI26
GPI25
GPI24
GPI23
GPI22
GPI21
GPI20
–
GPIO11
GPIO10
GPIO9
GPIO8
–
GPI19
GPI18
GPI17
GPI16
Cologne
Chip
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