Brother HL-4040CN Service Manual page 308

Main PCB Circuit Diagram (4/6)
1 2
LAN I/F, CDCC I/F, USB I/F
MAC/PHY
C174 X2
U13
TP410 6
C6P SMD-49 25.00000MHZ
XTAL1 R208
70 10k
(Iutput)
PME
R55
A SGND
1M TP394
R61 5
XTAL2
C205 100
TP452 TP437 (Output)
C6P
94
R211
LAN_CS_N nCS
1-3A 12.4k
87
TP392
R204 EXRES1
47 92 10
TP385
IO_RD_N nRD RBIAS
3-1A/1-3A
93 (PLL bias) R50
TP355 TP364
IO_WR_N nWR
12k 1%(F)
3-1A/1-3A
R205
TP372
R207 47
100 72 79
LAN_INT IRQ TPO+
1-1A
TP388 95 78
TP368 R210
nRESET TPO-
10k TP438
C199
C102
74 83
SPEED_SEL TPI+
SGND TP416 76 82 TP450
SGND
SGND FIFO_SEL TPI-
LAN_RST_N TP449
1-4C
R216
TP454
R63 100
2.2k
98
Speed
GPIO0/nLED1
B
99 Link&Activ
GPIO1/nLED2
SGND
100
GPIO2/nLED3
TP427
9
+3.3V ATEST
71
RESERVE71
TP414 73
RESERVE73
TP399
84
RESERVE84
TP408 67
EEDIO/GPO3/
69 TP384
EECLK/GPO4/
TP395
68
nEECS
TP382
8
VDD_REF
18
ADR[1]
A1
C
ADR[2] 17 C84
A2 C103
ADR[3] 16 11
A3 VSS_REF
15
ADR[4]
A4
14
ADR[5]
A5
13 7
ADR[6] ( PLL regurator:+1.8V)
A6 VDD_PLL
12
ADR[7]
A7
ADR[24-1] 4
3-1D/1-3A VSS_PLL
3
( regurator:+1.8V)
VDD_CORE3
65
VDD_CORE65
1
GND_CORE1
66
GND_CORE66
D
TP443
64 81
DATA[8] 8 1
D0 VDD_A81
TP362 63 85
DATA[9] 7 2 RA76
D1 VDD_A85
0
62 89
DATA[10] 6 3
D2 VDD_A89
59 91
DATA[11]
5 4
D3 REV(VDD_A)
58
DATA[12] 8 1
D4
DATA[13] TP345 57
7 2 RA72
D5
0 56 77
DATA[14] 6 3
D6 VSS_A77
53 80
DATA[15] 5 4
D7 VSS_A80
52 86
DATA[0]
8 1
D8 VSS_A86
TP331 51 88
DATA[1] 7 2 RA70
D9 VSS_A88
0
DATA[2] 50 90
6 3
D10 REV(VSS_A)
49
DATA[3] 5 4
D11
46
DATA[4] 8 1
D12
TP257 45 2
DATA[5] 7 RA17 (VREG:for internal regurator)
2
D13 VREG
0
44 20
DATA[6] 6 3
D14 VDD_IO20
E 43 28
DATA[7]
5 4
D15 VDD_IO28
35
DATA[15-0] VDD_IO35
3-1D/1-1A
39 42
TXD0 VDD_IO42
38 48
TP264
TXD1 VDD_IO48
37 55
TP251
TXD2 VDD_IO55
36 61
TP263
TXD3 VDD_IO61
21 97
TP250
TX_EN VDD_IO97
40 C88
TP320
TX_CLK
C103
26
RX_CLK
25 19
RX_ER GND_IO19
33 27
COL GND_IO27
75 34
RXD0 GND_IO34
TP413
22 41
RXD1 GND_IO41
23 47
RXD2 GND_IO47
24 54
RXD3 GND_IO54
32 60
CRS GND_IO60
29 96
F
SGND RX_DV GND_IO96
30
MDIO/EXT_PHY_DET
31
TP303
MDC
TP302
LAN9115-MT
1 2
3 4
+3.3V
R90
0
16VDC a (1005)
R71 (1608)
L3.3V
10 1%(F) 10%(B)
SGND
CN12
(2012) C223
R91 12 FG
0
11 FG
SGND
1%(F)
C107
(1608)
SGND
LAN_LEDA_N
2B
SGND 7 LED1_C
SGND R70 (Speed) R73
R69 100 yellow
49.9
8 LED1_A
49.9
1% +3.3V
1% (2012) (1608)
1 TCT
C112
(2012) 1:TX+
TPO+
C10P 2 TD+
TPO-
3 TD-
2:TX-
C110 TPI+ 4 RD+
3:RX+
C682 4:not use
5:not use
TPI- 5 RD-
6:RX-
7:not use
6 RCT 8:not use
C109
10 LED2
R215 R214 C682 orange
+3.3V
49.9 49.9 green
R72
1% 9 LED2
1% 100
(2012) (2012) (1608)
LAN_LEDA_N LAN_LEDB_N 08B0-1X1T-03-F
3A 2B
(Link&Activ)
C196
LAN_LEDB_N
4B
C103
(1608)
R212
7
10k 1 FG
TPI+ TPI-:Zdiff=100
SGND SGND
TPO+ TPO-:Zdiff=100
6
FG
10
R206 Top View
10k
SGND
+3.3V
SGND
Fault
TP386
(FCT)
C168
C106
(2012)
SGND
Select In
TP400
(FCT)
C185
C106
(2012)
SGND
L3.3V L2
BLM11P300S
R231
+3.3V
1608
0 1608
C106
C106
(2012)
06/7/10
USB HOST1 Power on
+3.3V:Enable
0V:Output off
High-side SW
USB_HOST1_PPON
1-5F
@C118
TP23 @U1
C104 1
+5.0V_WLLAN VIN
2
SGND GND
3
ENABLE
C224
SGND
MIC2005-0.5YM6
C7P
1005
+3.3V
TP502
1-3E
USB_HOST1_DP
USB_HOST1_DN
1-3E
Zdiff=90
USB HOST2 Power on
+3.3V:Enable
0V:Output off
USB_HOST2_PPON
1-5F
TP31 C9
C104
+5.0V_USBHOST
SGND
1005
C225
C7P
SGND
TP503
1-3F
USB_HOST2_DP
USB_HOST2_DN
1-3F
Zdiff=90
3 4
6-4
5 6
CDCC_RST_N
1-6B
CDCC
@CN14
+5.0V
@R74
0 CDCC_CLK
1-6B
37
FG SGND
CDCC_DATA
(1608) 1-4B
TP464 @R75
(For ESD)
1.5k
19 1
GND Strobe
CDCC_STB_N
+5.0V
TP460
@ZD1
EDZ6.8B
(For ESD)
SGND @RA78 @RA79
2.2k 2.2k
@RA35 100
8 1
GND 20 Data1 2
21 3 TP473 7 2 TP456
GND Data2
6
3
22 4 TP445
GND Data3
5
23 5 4 TP389
GND Data4
8 1
24 6 TP405
GND Data5
7 2
GND 25 Data6 7 TP474 TP419
6 3
26 8 TP420
GND Data7
5
4
27 9 TP406
GND Data8
@RA36 100 TP379
+5.0V
@DA1 @DA2
@RA77
DF5A6.8FU(F) DF5A6.8FU(F)
1.5k
(For ESD)
(For ESD)
SGND
@RA37
33
4 5
CDCC_ACK_N
28 10
GND Ack
3
29 11 6 CDCC_BUSY
GND Busy TP475
30 12 2 7 CDCC_PE
GND Paper Empty
1 8
31 13 CDCC_SELECT
Init Select
+5.0V
SGND
@DA3
DF5A6.8FU(F) @RA38
(For ESD) 1.5k
SGND
SGND @R76 100
CDCC_INIT_N
@R78
TP469 TP465
33 @R77 100
32 14 TP468 TP455
AutoFdXT CDCC_AF_N
TP476 CDCC_SELIN TP462
@R79 100
N/C 33 N/C 15 TP472 @C213 TP461
C101
34 TP470 16 TP471
N/C GND
35 TP477 17
N/C GND SGND
SGND
@DA4
TP478
@R80 DF5A6.8FU(F)
1.5k
36 18
+5V(N/C) +5.0V SGND
TP467
@R222 0
38
FG SGND
(1608)
TP486
(For ESD)
USB-FUNCTION
@R223 0
CN13
(1608)
(For ESD) FG2
FG 5
2
DM
3
DP
1
VBUS(5V)
4
GND
+3.3V
6
VOUT
R98
5 FG 6
CSLEW 10k
4
FAULT/ USB_HOST1_FLG UBR24-4K2G00
1-4F
TP30
USB HOST1 Power
+3.3V:Normal
0V:Over current
TP8 WLAN
@CN2
1 FG DP DN
SGND FG
2
1.0 +5V
3
DATA+ Gnd 5V
TP504 FG
4 DATA-
Top View
TP505
5
GND
6
SGND FG
U21 BM06B-SRSS-TB(LF)(SN
2 4
VDD VSS
SGND
1 3
OUT NC
S-80842CNNB
High-side SW
+3.3V
U2
1 6
VIN VOUT
2 5 R95
GND CSLEW
10k
3 4
ENABLE FAULT/ USB_HOST2_FLG
1-4F
TP43
MIC2005-0.5YM6 USB HOST2 Power
+3.3V:Normal
TP12 USB-HOST 0V:Over current
CN3
1
SGND FG
1.0 2
+5V
3
DATA+
4
DATA-
5
GND
6
SGND FG
B06B-CZHK-B-1(LF)(V)
5 6
7 8
CDCC GA
@R60 @U14
1k 21 30
RSTN/SIN VDD3 +3.3V A
@C96
(For ESD) @C100
TP433 TP424
C101
C103
(For ESD) 26
GND26 SGND
SGND 25
50MHz
CLK/SCK
@R57
23 24 33
25MHz TP435 25MHz
DATA INTN CDCC_INT_N
1-4B
22
@R58
TP383 TP432 TP431 TP425 25MHz CDCC_REQ_N
33 REQN/SOUT
1-4B
@R59
TP423 TP411
33
20
SMC
13
@R217 TP466
AMC
100
17
TP378
STBN
@C82
@C204 TP458 @C83
C101 C103
1 C103
VDD51 +5.0V
18 7
SGND @C194
D0 VDD57
C103
19 16
D1 VDD516
14
D2
12 15
D3 GND15 SGND
11
D4
10
B
D5
9
D6
8
D7
28
FLTN
3
SELECT
27 4
INITN PE
2 5
AFN BUSY
29 6
SELINN ACKN
UPD65421MC-111-5A4-A
SGND
TP459
TP453
TP446
TP441
C
CDCC_FLT_N
SGND
R89
0
SGND
(1608) D
USB_DATA_M
1-3E
USB_DATA_P
1-3E
Zdiff=90
R84
SGND 10k
TP480
USB_VCC
1-4E
R86
0 R85 C102
C101
SGND 15k
(For ESD)
(1608)
SGND
SGND
E
F
CODE LM9444-001
CIR B512246 (4/6)
NAME
7 8
Confidential