EM77950
BB Controller
7.1.9 Table Look-up Pointer – LTBL (0x0B), and HTBL (0x0C)
The maximum length of a table is 64K, and can be accessed through registers LTBL
and HTBL. HTBL is the high byte of the pointer, whereas LTBL is the low byte.
7.1.10 Stack Pointer – STKPTR (0x0D)
Register RD indicates how many stacks the current free run program uses. It is a read
only register.
7.1.11 Repeat Counter – RPTC (0x0E)
The RE register is used to set how many times the “RPT” instruction is going to read the
table.
7.1.12 Prescaler Counter – PRC (0x0F)
Prescaler counter for TCC.
7.1.13 Real Time Clock Counter – RTCC (0x10)
TCC counter.
7.1.14 Interrupt Flag Register – INTF (0x11)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ADIF
RBFIF
PWM1IF PWM0IF
EINT1F
EINT0F
TCCOF
FRCOF
Bit 0 (FRCOF): FRC Overflow interrupt. Set as the contents of the FRC counter
change from 0xFFFF to 0x0000, reset by software.
Bit 1 (TCCOF): TCC Overflow interrupt. Set as the contents of the TCC counter
change from 0xFF to 0x00, reset by software.
Bits 2 ~ 3 (EINT0F & EINTIF): External input pin interrupt flag. Interrupt occurs at a
defined edge of the external input pin, reset by software.
Bits 4 ~ 5 (PWM0IF & PWM1IF): PWM interrupt flag. Interrupt occurs when TMRX is
equal to PRDX, reset by software.
Bit 6 (RBFIF): SPI receiving buffer full Interrupt flag. Interrupt occurs when an 8-bit
data is received, reset by software.
Bit 7 (ADIF): ADC conversion complete interrupt flag.
Each bit can function independently regardless whether its related
interrupt mask bit is enabled or not.
28 •
Product Specification (V1.0) 10.09.2007
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
