Nellcor NPB-190 Service Manual page 81

VDD
1 1
L6
3
VDD
R117 2.21K
L7 0.95U
LEDDIS
L8 0.95U
IR/RED
L9 0.95U
RWD_RST
L10 0.95U
PWM1
L11 0.95U
PWM2
L12 0.95U
I221
IICDATA
L13 0.95U
PORTSEL-L
RWD_RST WD_RST
VDD
R89
I110
221
U30 TP32
I91
1 1 VCC 8 8
PBRST
2 2 7 7
TD ST
VDD 3 3 ~RST 6 6
TOL
4 4 5 5
Bypass cap
GND RST I92
for U30
LTC1232
C91
0.1U SPI_MISO
I112
L14 PICINT
I111
4
6
5
U41
I53
74HC08S
U41
74HC08S
LEDEN 1
3
RST-L 2
IICDATA 4
6
RST-L 5
VDD
U28
74HC08S
I176
1
U34
RST-L 2
1 2
3
8 7
74HC02S
J4
1 1 2 2
3 4 4
5 6 6
7 8 8
9 9 10 10
11 12 12
13 14 14
CON_7X2
DISPLAY CONNECTOR
035191
4700P
2 2 196PWR
I100
+
50V
4 4
C79 C102
470P
47U
10V
7343
I103 I105 I107 U27
VREF 1 1
PWR
I102 I104 I106 I101
37 37
VPP
13 13
VREF
12 12
ANGND
REDDC 6 6
ACH0/P0.0
REDAC 5 5
ACH1/P0.1
IRDC 7 7
ACH2/P0.2
IRAC 4 4
ACH3/P0.3
RSENS 11 11
ACH4/P0.4
BTN_1 10 10
ACH5/P0.5
BTN_2 8 8
ACH6/P0.6
BTN_3 9 9
ACH7/P0.7
19 19
P1.0
20 20
P1.1
21 21
P1.2
22 22
P1.3/PWM1
23 23
P1.4/PWM2
30 30
P1.5/
IRLED/AV 31 31
P1.6/
32 32
P1.7/
43 43
READY
RST-L 16 16
RESET
TP34
3 3
NMI
2 2
EA
RAMEN-L 64 64
BUSWIDTH
PHOTOI 24 24
HSI0
SPI_MISO 25 25
HSI1
L15 0.95U
TXD 18 18
P2.0/TXD
RXD 17 17
I108 P2.1/RXD
PICINT 15 15
I109 P2.2/EXTINT
BTN_4 44 44
P2.3/T2CLK
0.95U BTN_5 42 42
P2.4/T2RST
PWM0 39 39
P2.5/PWM0
REDLED/AV 33 33
P2.6/TWUP-DN
U41 74HC08S ZERO-L 38 38
P2.7/T2CAPT
9
8 80C196KC
10
C82
0.1U
SPARES
I66
12
11
13
U41
I239
74HC08S
ADDRESS DECODING - MEMORY MAPPING
I177
U34
PORTSEL-L 11
3
Q11 Q11 WR-L 12
SI9953 4 SI9953
74HC02S
6 5
ADDR12 9 U25
ADDR13 10
VDD
ADDR14 12
ADDR15 13
DISP_DATA 74HC20S
U28
TP25 9
VDD 8
R101
IIC_SCK 10
10.0K
I226
74HC08S
I227
I228
C81
C118 C78
I229
0.1U 0.1U
0.1U
RP2
120
60 60 RAD0 AD0
AD0
9 9
59 59 RAD1 8 AD1
AD1
10 10
58 58 RAD2 7 AD2
AD2
11 11
57 57 RAD3 6 AD3
AD3
12 12
56 56 RAD4 5 AD4
AD4
13 13
55 55 RAD5 4 AD5
AD5
14 14
54 54 RAD6 3 AD6
AD6
53 53 RAD7 15 15 AD7
2
AD7
16 16
52 52 RAD8 1 AD8
AD8
9 9
51 51 RAD9 8 AD9
AD9
10 10
50 50 RAD10 7 AD10
AD10
11 11
49 49 RAD11 AD11
6
AD11
12 12
48 48 RAD12 5 AD12
AD12
13 13
47 47 RAD13 4 AD13
AD13
14 14
AD14 46 46 RAD14 AD14
3
15 15
45 45 RAD15 2 AD15
AD15
16 16
62 62 RALE-L 1
ALE/ ADV
120
I163
RP1
61 61 RRD-L
RD
40 40 RWR-L
WRL/WR
41 41
BREQ WRH/BHE I74 I234 I161
63 63
HLDA INST I89
HOLD I233 I93
28 28
HSO0
29 29
HSO1
34 34
HSO2
35 35 R111 221 IIC_SCK
HSO3
26 26 SPI_MOSI
HSI2/HSO4
27 27 SPI_SCK
HSI3/HSO5 R110 I164
121
65 65 CLK_OUT
CLKOUT
TP33
67 67
XTAL1
66 66 Y5
XTAL2
10MHZ
1 R88 1 2 2
121
I167
14 14 HC49S
GND1
36 36
GND2
68 68 Y2
GND3
10MHZ
4 4 1 1
ATP-SM
C95
22P
VDD
U25 EXTERNAL OUTPUT PORT
1 0000 - EFFF
2
I166
6 EXOUTEN-L
13 4
I178
5
74HC20S
RAM - F000 - FFFF
8 RAMEN-L
I179
U34
ROM - 0000 - EFFF
I231
8
10
9
VDD
74HC02S
I224
I230
C94 VDD U28
0.1U 12
TP27
ROMEN-L
11
R131
13
10.0K
74HC08S
ADDRESS LATCHING
U21
AD0 2 2 1Q 19
1D
AD1 3 3
2D 2Q
AD2 4 4 3Q 17
3D
AD3 5 5 4Q 16
4D
AD4 6 6 5Q 15
5D
AD5 7 7 6Q 14
6D
AD6 8 8
7D 7Q
AD7 9 9 8Q 12
8D
ALE 11 11
C
1 1
TP36 OC
74HC573S
R92
10.0K
R75 121
ALE
R86 RD-L 121
R87 121
WR-L
U20
I162
L16 0.95U AD8 2 2 1Q 19
1D
SAMPRED
AD9 3 3 2Q 18
2D
L17 0.95U AD10 4 4 3Q 17
3D
OFF/ON
AD11 5 5 4Q 16
4D
AD12 6 6
I90 5D 5Q
L18 0.95U AD13 7 7 6Q 14
6D
SAMPIR
AD14 8 8 7Q 13
7D
AD15 9 9 8Q 12
8D
ALE 11 11
C
1 1
OC
74HC573S
HC49S IS USED
ONLY IF ATP-SM
EXTERNAL OUTPUT PORT
IS NOT AVAILABLE
U29
AD0 2 2 1Q 19
1D
AD1 3 3
2D 2Q
AD2 4 4 3Q 17
3D
AD3 5 5 4Q 16
4D
AD4 6 6 5Q 15
5D
C90
AD5 7 7 6Q 14
6D
22P
AD6 8 8
7D 7Q
AD7 9 9 8Q 12
8D
EXOUTEN-L 11 11
CLK
1 1
TP35 OC
74HC574S
R78
10.0K
RAD0 AD0 ADDR0
I113 I130 I159
RAD1 AD1 ADDR1
I114 I131 I158
RAD2 AD2 ADDR2
I115 I133 I156
RAD3 AD3 ADDR3
I116 I132 I157
RAD4 AD4 ADDR4
I117 I137 I152
RAD5 AD5 ADDR5
I118 I136 I153
RAD6 AD6 ADDR6
I120 I134 I155
RAD7 AD7 ADDR7
I119 I135 I154
RAD8 AD8 ADDR8
I121 I144 I145
RAD9 AD9 ADDR9
I122 I143 I146
RAD10 AD10 ADDR10
I124 I141 I148
RAD11 AD11 ADDR11
I123 I142 I147
RAD12 AD12 ADDR12
I128 I138 I151
RAD13 AD13 ADDR13
I127 I139 I150
RAD14 AD14 ADDR14
I125 I140 I149
RAD15 AD15 ADDR15
I126 I129 I160
CPU Core Schematic Diagram (Sheet 6 of 10)
ADDR0
18 ADDR1
ADDR2
ADDR3
ADDR4
ADDR5
13 ADDR6
ADDR7
VDD VDD VDD
C116
+
47U C80 C77
10V 0.1U 0.1U
7343
ADDR8
ADDR9
ADDR10
ADDR11
15 ADDR12
ADDR13
ADDR14
ADDR15
I181
I242
I182
19 PICEN_L
18 18 LEDEN
17 EEPEN
16
15 AL_SIL_IND
14 PSRCH_IND
13 13 BATT_IND
12
I183
I184
I185
VDD
C83
0.1U
ALE
I168
RD-L
I169
WR-L
I170
SPI_MOSI
I174
SPI_SCK
I175
CPU CORE
Figure S-8
S-21