Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board 7-47
6815854H01-A June 15, 2005
Figure 7-39. HUD4022A USB/RS232/SB9600 Schematic
USB*_RS232_ENBOOT_DATA_EN* Mode of Operation
0
0
0
1
01
11
Not Allowed
Boot Data
USB
RS232
MOTOROLA CONFIDENTIAL PROPRIETARY
SB9600 Block
VIP I/O Block
BUFFER SUPPLYBUFFER SUPPLY
NP
73D02970C73-O
SHEET 10 OF 23
URXD1_USB_VMIN
UCTS1_USB_FSEN
UCTS1_USB_FSEN
URXD1_USB_VMIN
R0301
100
R0300
100
C0313
0.1uF
U0308
PWR_GND
3
GND
5
VCC
VCC5
NC7ST08
U0308
1
2
4
0.1uF
C0312
10K
VM
4
VO_VPO
11
VP
3
VPU
15
VREG
13
VCC2.85
R0307
GND
17
6
MODE
OE_N
1
RCV
2
SUSPND
5
USB_DET
8
VBUS
14
VCC
7
U0304
ISP1104
DNEG
9
DPOS
10
ENUMERATE
16
FSE0_VMO
12
14
T1O
10
T2I
7
T2O
16
VCC
6
VNEG
2
VPOS
C2NEG
5
C2POS
4
15
GND
13
R1I
12
R1O
8
R2I
9
R2O
11
T1I
GND
5
VCC
ST3232
U0305
C1NEG
3
1
C1POS
U0307
PWR_GND
3
12
13
11
C0311
0.1uF
2
4
VCC2.85
U0303
MC74LCX125
UCTS2
URTS2
URXD2
UTXD2
U0307
MC74VHC1G00
1
VCC2.85
BUS+_UARTB_TXD
BUS-_UARTB_RXD
BUSY_UARTB_RTS
LHRST_IN
LHRST_OUT
RESET_UARTB_CTS
SB96_RS232*_EN
U0303
MC74LCX125
9
10
8
VCC2.85
3
MC74LCX125
U0300
12
13
11
5
4
6
U0303
MC74LCX125
2
1
0.1uF
MC74LCX125
U0303
GND
7
VCC
14
C0302
3
PWR_GND
U0303
U0300
MC74LCX125
2
1
GND
14
VCC
0.1uF
C0305
VIP_OUT_2_3V VIP_OUT_2_5V
U0300
PWR_GND
7
VIP_IN_1_3V VIP_IN_1_5V
VIP_IN_2_3V VIP_IN_2_5V
VIP_OUT_1_3V VIP_OUT_1_5V
C0306
VCC9
0.1uF
0.1uFC0310
VCC5
0.1uFC0309
0.1uFC0308
0.1uFC0307
R0303
1.5K
VCC2.85
0.1uF
C0301
22
22R0305
5
4
6
R0304
MC74LCX125
9
10
8
MC74LCX125
U0300
U0300
BOOT_DATA_EN*
VIP_OUT_1_5V
VIP_OUT_2_5V
VIP_IN_1_5V
VIP_IN_2_5VBUSY_UARTB_RTS
BUS-_UARTB_RXD
BUS+_UARTB_TXD
RESET_UARTB_CTS
SB96_RS232*_EN
USB_INT*
USB_PWR
VIP_OUT_1_3V
VIP_IN_1_3V
VIP_OUT_2_3V
VIP_IN_2_3V
UTXD2
UCTS2
LHRST_IN
LHRST_OUT
URTS2
URXD2
BOOT_RX
BOOT_TX
USB_VPIN
UARTA_TXD
UARTA_CTS
UARTA_RXD
UARTA_RTS
URTS1_USB_XRXD
URTS1_USB_XRXD
UTXD1_USB_VPOUT
UTXD1_USB_VPOUT
USB_VMOUT
RIA_USBSUSP
USB*_RS232_EN
USB_VMI
USB_VPI
USB_TXENB
USB+
USB+
USB-
USB-
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