Cirrus Logic CRYSTAL LAN CS890 Technical Reference Manual page 22

ELCS
X1
C6 33pF 1 2 C9 33pF
XTAL
20.0 MHz
SA00
SA01
SA02
SA03
SA04
SA05
SA06
SA07
SA08
SA09
SA10
SA11
SA12
SA13
SA14
SA15
SA16
SA17
SA18
SA19
CHIPSEL
MEMW
MEMR
IOW
IOR
REFRESH
SBHE
AEN
TSTSEL
RESET
+5V
Figure 2.2.2. CS8900 Schematic (Combo Card Application)
22
4.99k
R3
93
RES
97
XTL1
98
XTL2
37
ISA0
38
ISA1
39
ISA2
40
ISA3
41
ISA4
42
ISA5
43
ISA6
44
ISA7
45
ISA8
46
ISA9
47
ISA10
48
ISA11
50
ISA12
CS8900
51
ISA13
52
ISA14
53
ISA15
54
ISA16
58
ISA17
59
ISA18
60
ISA19
7
CHIPSEL
28
MEMW
29
MEMR
62
IOW
61
IOR
49
REFRESH
36
SBHE
63
AEN
76
TESTSEL
77
SLEEP
75
RESET
CS8900 Technical Reference Manual
+5V
EECS
EEDATAOUT
LED0/HC0 99
BSTATUS / HC1
LED2
DO-
DO+
U1
RXD-
RXD+
TXD-
TXD+
INTRQ0
INTRQ1
INTRQ2
INTRQ3
MEMCS16
I0CS16
I0CHRDY
DMARQ0
DMARQ1
DMARQ2
CSOUT
0.1 µ F
C5
1
CS VCC 8
EE_CLK
2
CLK D0 4
3
U3
D1
NC2 7
5
VSS
NC1 6
1K_EEPROM_S
BSTATUS / HC1
3
R18 680
3
5
78 R19 680
1
100
84
DO-
83
DO+
CI- 82
CI-
CI+ 81
CI+
80
DI-
DI-
DI+ 79
DI+
92
10BT_RD-
91
10BT_RD+
88
10BT_TD-
87
10BT_TD+
32
IRQ10
31
IRQ11
30
IRQ12
35
IRQ5
34
MEMCS16
33
I0CS16
64
I0CHRDY
15
DRQ5
13
DRQ6
11
DRQ7
PROM CS
17
PROM_CS
AN83REV1
+5V
LED_T
4
LED_B
2