Sharp UP-3301 Service Manual page 46

Pin
Name UP-3301
NO.
39 CTS2Z /CTS3
40 RCVDT2 RCVDT3
41 /CI2 VCC
42 /CS2 /CS3
43 /CD3 /SINT
44 BRK3 GND
45 TRNEMP3 GND
46 RCVRDY3 GND
47 TRNRDY3 GND
48 /CTS3 GND
49 RCVDT3 GND
50 /CI3 GND
51 /CS3 /SRCS
52 D0 D0
53 D1 D1
54 D2 D2
55 D3 D3
56 GND GND
57 D4 D4
58 D5 D5
59 D6 D6
60 D7 D7
61 GND GND
62 VCC VCC
63 X1 NC
64 X2 #
65 XOUT CLK_USART
66 TRCK NC
67 AB0 AH0
68 AB1 AH1
69 US1CH GND
70 PX NC
71 /POF /POFF
72 /RSRQ /IRQ1
73 /TRV GND
74 RXDATA0 NC
75 TXE /SRESET
76 /TRRQ /TRQ2
77 /TRQ1 /TRQ1
78 /TRQ2 NC
79 A0 A0
80 A1 A1
81 A2 A2
82 A3 A3
83 A4 A4
84 A5 A5
85 /OPTCS /OPTCS
86 /RD /RDO
87 /WR /WRO
88 /RES /RES
I/O Description
IS RS-232 clear to send signal
IS RS-232 reception to send
signal
IS +5V
O RS-232 chip select signal
IS RS-232: /CD, IN-LINE : /P1
IS GND
IS GND
IS GND
IS GND
IS GND
IS GND
IS GND
O RS-232/INLINE chip select
signal
IO Data bus (CPU)
IO Data bus (CPU)
IO Data bus (CPU)
IO Data bus (CPU)
GND
IO Data bus (CPU)
IO Data bus (CPU)
IO Data bus (CPU)
IO Data bus (CPU)
GND
+5V
O OSI14 NC
I OSI14 System clock
O Clock (USART)
O NC
O Address bus for USART
O Address bus for USART
IS GND
O NC
IS POFF signal
3S RS232 INTERRUPT
IS GND
O NC
O INLINE TRNS ENABLE
3S INLINE INTERRUPT
ON6 TIMER INTERRUPT
(RS232)
ON6 TIMER INTERRUPT
(INLINE)
I Address bus for CPU
I Address bus for CPU
I Address bus for CPU
I Address bus for CPU
I Address bus for CPU
I Address bus for CPU
I Option chip select (from
MPCA)
I Read signal (from CPU)
I Write signal (from CPU)
IS Reset signal (from CPU)
UP-3301US CIRCUIT DESCRIPTION
Pin
Name UP-3301
NO.
89 DB0 DB0
90 DB1 DB1
91 DB2 DB2
92 DB3 DB3
93 GND GND
94 DB4 DB4
95 DB5 DB5
96 DB6 DB6
97 DB7 DB7
98 /R /RDH
99 /W /WRH
100 VCC VCC
101 GND GND
102 RES RES USART
103 TRNCLK GND
104 RCVCLK GND
105 DBTST /SRCS
106 UTST VCC
107 /CSA /CS1
108 TRNDTA TXD1
109 /DTRA /DTR1
110 /RTSA NC
111 RCVDTA RCVDT1
112 /CTSA GND
113 /DSRA /DSR1
114 TRNRDYA TRNRDY1
115 RCVRDYA RCVRDY1
116 TRNEMPA TRNEMP1
117 SYCBKA BRK1
118 GND GND
119 /CSB /CS2
120 TRNDTB TXD2
121 /DTRB /DTR2
122 /RTSB NC
123 RCVDTB RCVDT2
124 /CTSB GND
125 /DSRB /DSR2
126 TRNRDYB TRNRDY2
127 RCVRDYB RCVRDY2
128 TRNEMPB TRNEMP2
129 SYCBKB BRK2
130 GND GND
131 /CSC /CS3
– 44 –
I/O Description
IO DATA BUS (USART)
IO DATA BUS (USART)
IO DATA BUS (USART)
IO DATA BUS (USART)
GND
IO DATA BUS (USART)
IO DATA BUS (USART)
IO DATA BUS (USART)
IO DATA BUS (USART)
O Read signal (to USART)
O Write signal (to USART)
+5V
GND
O Reset signal (to USART)
I GND
I GND
ID RS-232/INLINE USART chip
select
ID +5V
IS USART_A chip select
O RS-232 transmission data
signal
O RS-232 data terminal ready
signal
O NC
IS RS-232 reception data sig-
nal
IS GND
IS RS-232 data set ready sig-
nal
O RS-232 data transmission
enable signal
O RS-232 data reception
enable signal
O RS-232 transmission buffer
empty signal
IO Break code detection signal
GND
IS USART_B chip select
O RS-232 transmission data
signal
O RS-232 data terminal ready
signal
O NC
IS RS-232 reception data sig-
nal
IS GND
IS RS-232 data set ready sig-
nal
O RS-232 data transmission
enable signal
O RS-232 data reception
enable signal
O RS-232 transmission buffer
empty signal
IO Break code detection signal
GND
IS USART_C chip select