
Philips Semiconductors
Preliminary specification
UCB1100
Advanced modem/audio analog front-end
1998 May 08
32
Address 9:
Touch screen control register
BIT
MODE
SYMBOL
REMARK
RESET
0
R/W
tspx_pow
If ‘1’, the tspx pin is powered
0
1
R/W
tsmx_pow
If ‘1’, the tsmx pin is powered
0
2
R/W
tspy_pow
If ‘1’, the tspy pin is powered
0
3
R/W
tsmy_pow
If ‘1’, the tspy pin is powered
0
4
R/W
tspx_gnd
If ‘1’, the tspx pin is grounded
0
5
R/W
tsmx_gnd
If ‘1’, the tsmx pin is grounded
0
6
R/W
tspy_gnd
If ‘1’, the tspy pin is grounded
0
7
R/W
tsmy_gnd
If ‘1’, the tspy pin is grounded
0
[9:8]
R/W
tsc_mode[1:0]
Touch screen operation mode
00 : interrupt mode
01 : pressure measurement mode
1x : position measurement mode
0
11
R/W
tsc_bias_ena
If ‘1’, the touch screen bias circuitry is activated.
0
12
R/W
tspx_state
This bit returns the inverted state of the tspx pin,
‘0’ is high voltage (pen up), ‘1’ is low voltage (pen down)
13
R/W
tsmx_state
This bit returns the inverted state of the tsmx pin,
‘0’ is high voltage (pen up), ‘1’ is low voltage (pen down)
Address 10:
ADC control register
BIT
MODE
SYMBOL
REMARK
RESET
0
R/W
adc_sync_ena
If ‘1’, the adc sync mode is activated
0
1
R/W
vrefbyp_con
If ‘1’, the internal reference voltage is connected to the vrefbyp pin.
0
4:2
R/W
adc_input[2:0]
ADC input selection bits:
000: tspx
001: tsmx
010: tspy
011: tsmy
100 ad0
101: ad1
110: ad2
111: ad3
0
5
R/W
ext_ref_ena
If ‘1’, an external reference voltage has to be applied to the vrefbyp pin
0
7
R/W
adc_start
A ‘0’ to ‘1’ transition starts the adc conversion sequence.
0
15
R/W
adc_ena
If ‘1’, the adc circuit is activated
0
Address 11:
ADC data register
BIT
MODE
SYMBOL
REMARK
RESET
14:5
R
adc_data[9:0]
Returns the ADC result
0
15
R
adc_dat_val
Returns ‘0’ if an adc conversion is in progress.
Returns ‘1’ if the 0 adc conversion is completed and the adc data is stored in the
adc_data[9:0] register.
0
Address 12:
ID register
BIT
MODE
SYMBOL
REMARK
RESET
5:0
R
version[5:0]
Returns 000011 for all the UCB1100 circuits meeting this specification.
11:6
R
device[5:0]
Returns 000000 for all the UCB1100 circuits meeting this specification.
15:12
R
supplier[3:0]
Returns 0001 for all the UCB1100 circuits meeting this specification.