EM77950
BB Controller
4 Pin Description
The Table below shows the corresponding relationship between the pad and pins of EM77950A
Pull High
Schmitt
Trigger
Open
Drain
Pin #
Symbol
Type
Function Description
Pin 0 of Port F
/50KΩ
1
2
PTF0/OSCO2 I/O
√
√
√
−
−
−
−
Selected PLL clock out
Pin 1 of Port F
I/O
I/O
−
PF1
Pins 0~3 of Port A (default).
Key Wake-up 8~B
KWU8~B,
PA0~3
3~6
−
7
/RST
−
√
−
−
√
−
−
Reset pin
8~10 PTA4~6
I/O
Pins 4~6 of Port A.
Pin 7 of Port A.
PWM0 output
11 PWM0/PTA7
I/O
I/O
−
−
√
√
−
√
Pins 0~7 of Port B (default).
Key Wake-up 0~7
12~19 PB0 ~ PB7
20 DVDD
Power supply for digital circuit. The power
source value should be within the range of the
operating voltage.
−
−
−
−
21 RF_ACT
22 TXRX
23 RFIO
O
O
−
−
−
−
−
−
−
−
−
−
−
−
BB/RF Active
Transceiver modes control
Transceiver to/from RF modem
Ground Pin for Digital circuit
I/O
−
24 DVSS
Data in of SPI
Pin 0 of Port C
25 SDI/PTC0
I/O
I/O
I/O
I/O
I/O
I/O
√
√
√
−
−
−
√
√
√
√
√
√
√
√
√
√
√
√
Data out of SPI
Pin 1 of Port C
26 SDO/PTC1
27 SCK/PTC2
28 EINT0/ PTC3
29 EINT1/ PTC4
30 PWM1/PTC5
Clock of SPI
Pin 2 of Port C
External interrupt Pin 0
Pin 3 of Port C
External interrupt Pin 1
Pin 4 of Port C
Pin 5 of Port C.
PWM1 output
31 PLLC
32 OSCO1
33 OSCI
34 AVSS
−
O
I
−
−
−
−
−
−
−
−
−
−
−
−
External capacitor for PLL circuit
Output of crystal oscillator
Input of crystal oscillator
−
Ground Pin for Analog circuit
6 •
Product Specification (V1.0) 10.09.2007
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
