Figure 7-105.Hue4040A Usb/Rs232/Sb9600 Schematic - Motorola ASTRO Digital XTL 5000 Detailed Service Manual

Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board
U0300-1
1
MC74LCX125
USB_VPIN
3 2
U0300-2
4
MC74LCX125
URXD1_USB_VMIN
6 5
UCTS1_USB_FSEN
U0300-3
10
MC74LCX125
URTS1_USB_XRXD
8 9
USB_TXENB
UTXD1_USB_VPOUT
USB_VMOUT
RIA_USBSUSP
USB*_RS232_EN
MC74LCX125
U0303-2
BOOT_RX
BOOT_TX
BOOT_DATA_EN*
BOOT_DATA_EN* USB*_RS232_EN Mode of Operation
0 Not Allowed
0
0 1 Boot Data
1 0 USB
1 1 RS232
6881096C74-B
USB_VPI
USB_VMI
100
R0300 1
$V
11
12
5
$V
16
100
R0301
VCC2.85 6
U0309-1
MC74VHC1GT00
1
4
2
$V
UCTS1_USB_FSEN
URXD1_USB_VMIN
URTS1_USB_XRXD
U0308-1
NC7ST08
1
4
U0307-1
2
MC74VHC1GT00
1
4
2
BUFFER SUPPLY
VCC2.85
VCC5
U0300-4
MC74LCX125
12
U0308-2 11
PWR_GND
C0305
13
VCC VCC
0.1uF
C0313
0.1uF
GND GND
R0307
10K
VCC5
VCC
C0601
GND
0.1uF
VCC2.85
C0301
C0312
0.1uF
0.1uF
USB_PWR
C0315
1uF
13
$V
VREG
2
R0303
OE_N RCV
3
1.5K
VO_VPO VP
4
FSE0_VMO VM
15
SUSPND VPU
10
R0304 33
ENUMERATE DPOS
9 R0305 33
MODE DNEG
8
USB_DET
U0304
ISP1104
USB_INT*
NP
C0307 1uF
8 9
C0308 1uF
U0303-3
MC74LCX125 10
U0303-4
MC74LCX125
11 12
13
BUFFER SUPPLY
VCC2.85
U0300-5 U0303-5
PWR_GND PWR_GND
C0302
VCC 3 2
0.1uF
U0303-1
GND MC74LCX125 1
VIP_OUT_1_3V
VCC5
U0601-2 U0605-2
PWR_GND PWR_GND
VCC
VIP_OUT_2_3V
C0605
GND
0.1uF
SB9600 Block
URXD2
URXD2
UTXD2 UTXD2
URTS2 BUS+_UARTB_TXD
URTS2
UCTS2 BUS-_UARTB_RXD
UCTS2
LHRST_OUT LHRST_OUT RESET_UARTB_CTS
LHRST_IN BUSY_UARTB_RTS
LHRST_IN
SB96_RS232*_EN SB96_RS232*_EN
USB+
USB+
USB-
USB-
VCC5
VCC9
C0306
R0310 22
$V
1uF C0310 1uF
1
C1POS VPOS
C0309 1uF
3
C1NEG VNEG
U0305
4
C2POS
5 LMS202E
C2NEG
UARTA_TXD
UARTA_CTS
UARTA_RXD
UARTA_RTS
U0601-1
MC74VHC1GT00
1
4
2
U0605-1
MC74VHC1GT00
1
4
2
Figure 7-105. HUE4040A USB/RS232/SB9600 Schematic
7-151
BUS+_UARTB_TXD
BUS-_UARTB_RXD
RESET_UARTB_CTS
BUSY_UARTB_RTS
VCC2.85
U0309-2
PWR_GND
VCC
C0314
0.1uF
GND
VCC2.85
U0307-2
PWR_GND
VCC
C0311
0.1uF
GND
VIP_OUT_1_5V
VIP_OUT_2_5V
May 25, 2005