Sharp GX20 Service Manual - Page 139

JTAG Test data input TDI [I] DAI [1]

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Pin No. 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155* 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171* 172 173 174* 175 176* 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 Terminal name VMEM GND VCC USC[6] VCC USC[2] USC[4] DATA[7] DATA[6] GND DATA[9] DATA[13] nROMCS1 GPIO_42 CLKIN VSIM GND USC[3] USC[1] GND USC[0] DATA[10] DATA[8] nRD DATA[14] GND nRAMCS2 GPIO_44 VSSUSB GPIO_47 GPIO_20 CLKON VCC GPO_18 GPO_21 DATA[12] DATA[11] nWE VEXT GPO_11 GPO_20 DATA[15] VMEM nADV nGPCS1 VMEM GPIO_45 GPIO_46 DPLUS SIMCLK JTAGEN VEXT GPO_03 GPO_04 GPO_07 GPO_16 GPO_17 nHWR/nUBS GPO_19 nLWR/nLBS nWAIT nRESET BURSTCLK nRAMCS1 Input/Output - - - Input - Output Input Input/Output Input/Output - Input/Output Input/Output Output Input/Output Input - - Input Input - Output Input/Output Input/Output Output Input/Output - Output Input/Output - Input/Output Input/Output Output - Output Output Input/Output Input/Output Output - Output Output Input/Output - Output Output - Input/Output Input/Output Input/Output Output Input - Output Output Output Output Output Output Output Output Input Input Output Output CONFIDENTIAL Description of terminal Memory power supply 2.7V to 3.3V memory support Ground Core power supply voltage 1.7V to 1.9V USC pin (CONT2) Core power supply voltage 1.7V to 1.9V USC pin (TXD) USC pin (RTS) Processor data bus Processor data bus Ground Processor data bus Processor data bus Extenal ROM chip select Display 1 chip select 13 MHz or 26 MHz crystal system clock input (Auto detect) SIM power supply 1.7V to 3.3V Ground USC pin (CD) USC pin (RXD) Ground USC pin (ADP) Processor data bus Processor data bus Processor read strobe Processor data bus Ground Pseudo SRAM chip select Flash 2 chip select USB ground SIM Volt (SIM voltage select) JTAG Test data input (TDI [I] DAI [1]) Oscillator power control signal (On/off) Core power supply voltage 1.7V to 1.9V TCK SYNTHCLK Processor data bus Processor data bus Processor write strobe External device power supply 2.4V to 3.3V TR_SW 4 SYNTHDATA Processor data bus Memory power supply 2.7V to 3.3V memory support nADV (Burst) Camera chip select Memory power supply 2.7V to 3.3V memory support Flash 3 chip select Extra chip select USB D+ SIM Clock JTAG Enable pull down External device power supply 2.4V to 3.3V RXON1 OTH_PA_ Negblas Camera power ON/OFF GSM_On DCS_On Processor high write strobe SYNTHEN Processor low write strobe nWAIT (Burst/page) System reset input Burst clock Extenal RAM chip select 6 - 7 GX20

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GX20
6 – 7
CONFIDENTIAL
128
VMEM
–
Memory power supply 2.7V to 3.3V memory support
129
GND
–
Ground
130
VCC
–
Core power supply voltage 1.7V to 1.9V
131
USC[6]
Input
USC pin (CONT2)
132
VCC
–
Core power supply voltage 1.7V to 1.9V
133
USC[2]
Output
USC pin (TXD)
134
USC[4]
Input
USC pin (RTS)
135
DATA[7]
Input/Output
Processor data bus
136
DATA[6]
Input/Output
Processor data bus
137
GND
–
Ground
138
DATA[9]
Input/Output
Processor data bus
139
DATA[13]
Input/Output
Processor data bus
140
nROMCS1
Output
Extenal ROM chip select
141
GPIO_42
Input/Output
Display 1 chip select
142
CLKIN
Input
13 MHz or 26 MHz crystal system clock input (Auto detect)
143
VSIM
–
SIM power supply 1.7V to 3.3V
144
GND
–
Ground
145
USC[3]
Input
USC pin (CD)
146
USC[1]
Input
USC pin (RXD)
147
GND
–
Ground
148
USC[0]
Output
USC pin (ADP)
149
DATA[10]
Input/Output
Processor data bus
150
DATA[8]
Input/Output
Processor data bus
151
nRD
Output
Processor read strobe
152
DATA[14]
Input/Output
Processor data bus
153
GND
–
Ground
154
nRAMCS2
Output
Pseudo SRAM chip select
155*
GPIO_44
Input/Output
Flash 2 chip select
156
VSSUSB
–
USB ground
157
GPIO_47
Input/Output
SIM Volt (SIM voltage select)
158
GPIO_20
Input/Output
JTAG Test data input (TDI [I] DAI [1])
159
CLKON
Output
Oscillator power control signal (On/off)
160
VCC
–
Core power supply voltage 1.7V to 1.9V
161
GPO_18
Output
TCK
162
GPO_21
Output
SYNTHCLK
163
DATA[12]
Input/Output
Processor data bus
164
DATA[11]
Input/Output
Processor data bus
165
nWE
Output
Processor write strobe
166
VEXT
–
External device power supply 2.4V to 3.3V
167
GPO_11
Output
TR_SW 4
168
GPO_20
Output
SYNTHDATA
169
DATA[15]
Input/Output
Processor data bus
170
VMEM
–
Memory power supply 2.7V to 3.3V memory support
171*
nADV
Output
nADV (Burst)
172
nGPCS1
Output
Camera chip select
173
VMEM
–
Memory power supply 2.7V to 3.3V memory support
174*
GPIO_45
Input/Output
Flash 3 chip select
175
GPIO_46
Input/Output
Extra chip select
176*
DPLUS
Input/Output
USB D+
177
SIMCLK
Output
SIM Clock
178
JTAGEN
Input
JTAG Enable pull down
179
VEXT
–
External device power supply 2.4V to 3.3V
180
GPO_03
Output
RXON1
181
GPO_04
Output
OTH_PA_ Negblas
182
GPO_07
Output
Camera power ON/OFF
183
GPO_16
Output
GSM_On
184
GPO_17
Output
DCS_On
185
nHWR/nUBS
Output
Processor high write strobe
186
GPO_19
Output
SYNTHEN
187
nLWR/nLBS
Output
Processor low write strobe
188
nWAIT
Input
nWAIT (Burst/page)
189
nRESET
Input
System reset input
190
BURSTCLK
Output
Burst clock
191
nRAMCS1
Output
Extenal RAM chip select
Pin No.
Terminal name
Input/Output
Description of terminal