Sony Ericsson GR 47 Technical Description page 15

28. ADC3
29. SDA
30. SCL
31. BUZZER
32. O3
KEYCOL3
DSR
33. LED
IO6
34. V IO
35. TX_ON
36. RI
KEYCOL2
O2
37. DTR
KEYROW1
IN1
38. DCD
KEYCOL1
O1
39. RTS
IO9
40. CTS
KEYCOL4
O4
41. TD
42. RD
43. TD3
I/O7
44. RD3
I/O8
45. TD2
46. RD2
GBBA/SEM/BMS 03:0001 Rev
GR47/GR48 Technical description
I Analogue
I/O 2.75, internal
pullup
O 2.75, internal
pullup
O Dig. 2.75
O Dig. 2.75
O
O
O Dig. 2.75
I/O
O Power Out
2.75
O Dig 2.75
O Dig. 2.75
O
O
I Dig. 2.75
I
I
O Dig. 2.75
O
O
I Dig. 2.75
I/O
O Dig. 2.75
O
O
I Dig. 2.75
O Dig. 2.75
I Dig. 2.75
I/O
O Dig. 2.75
I/O
I Dig. 2.75
O Dig. 2.75
A
Analogue to digital converter 3
I C Data
2
I C Clock
2
Buzzer output from module
General purpose output 5
Keyboard column 3
Data Set Ready
Flashing LED
General purpose I/O 6
Module powered indication.
The VIO is a 2.75 V output that could
power external devices to transmit
data towards the GSM device to a
75mA max.
This output shall indicate when the
GSM module is going to transmit the
burst.
Ring Indicator
Keyboard column 2
General purpose output 2
Data Terminal Ready
Keyboard row 1
General purpose input 1
Data Carrier Detect
Keyboard column 1
General purpose output 1
Request To Send
General purpose I/O 9
Clear To Send
Keyboard column 4
General purpose output 4
Transmitted Data [former DTMS]
Received Data [former DFMS]
UART3 Transmission
General purpose I/O 7
UART3 Reception
General purpose I/O 8
UART2 Reception [Former CTMS]
UART2 Transmission [Former CFMS]
15