Maxim Integrated DS4830 Optical Microcontroller - Manual (Page 87)

DS4830 User’s Guide
87
10.2.3
– I 2
C Master Interrupt Enable Register (I2CIE_M)
Address: M1[02h]
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Name - - - - I2CSPIE - I2CROIE I2CGCIE I2CNACKIE - I2CAMIE I2CTOIE I2CSTRIE I2CRXIE I2CTXIE I2CSRIE
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Access r r r r rw r rw rw rw r rw rw rw rw rw rw
BIT NAME DESCRIPTION
15:12 Reserved Reserved. The user should write 0 to these bits.
11 I2CSPIE I
2
C Master STOP Interrupt Enable. Setting this bit to ‘1’ will enable an interrupt
when a STOP condition is detected (I2CSPI=1). Clearing this bit to ‘0’ will disable
the STOP detection interrupt.
10 Reserved Reserved. The user should not write to this bit.
9 I2CROIE I
2
C Master Receiver Overrun Interrupt Enable. Setting this bit to ‘1’ will enable
an interrupt when a receiver overrun condition is detected (I2ROI=1). Clearing this
bit to
‘0’ will disable the receiver overrun detection interrupt.
8 I2CGCIE I
2
C General Call Interrupt Enable. This bit has no function when operating in
master mode.
7 I2CNACKIE I
2
C Master NACK Interrupt Enable. Setting this bit to ‘1’ will enable an interrupt
when a NACK is detected (I2CNACKI=1). Clearing this bit to ‘0’ will disable the
NACK detection interrupt.
6 Reserved Reserved. The user should write 0 to this bit.
5 I2CAMIE I
2
C Address Match Interrupt Enable. This bit has no function when operating in
master mode.
4 I2CTOIE I
2
C Master Timeout Interrupt Enable. Setting this bit to ‘1’ will enable an
interrupt when a timeout condition is detected (I2CTOI=1). Clearing this bit to ‘0’
will disable the timeout interrupt.
3 I2CSTRIE I
2
C Master Clock Stretch Interrupt Enable. Setting this bit to ‘1’ will enable an
interrupt when the clock stretch interrupt flag is set (I2CSTRI=1). Clearing this bit
will disable the clock stretch interrupt.
2 I2CRXIE I
2
C Master Receive Ready Interrupt Enable. Setting this bit to ‘1’ will enable an
interrupt when receive ready interrupt flag is set (I2CRXI=1). Clearing this bit to ‘0’
will disable the receive ready interrupt.
1 I2CTXIE I
2
C Master Transmit Complete Interrupt Enable. Setting this bit to ‘1’ will enable
an interrupt when transmit complete interrupt flag is set (I2CTXI=1). Clearing this
bit to
‘0’ disables transmit complete interrupt.
0 I2CSRIE I
2
C Master START Interrupt Enable. Setting this bit to ‘1’ will enable an interrupt
when a START condition is detected (I2CSRI=1). Clearing this bit to ‘0’ will
disable the START detection interrupt.
10.2.4
– I 2
C Master Data Buffer Register (I2CBUF_M)
Address: M1[00h]
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Name - - - - - - - - D7 D6 D5 D4 D3 D2 D1 D0
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Access r r r r r r r r rw* rw* rw* rw* rw* rw* rw* rw*
* Unrestricted read access. This register can be written to only when I2CBUSY = 0.
BIT NAME DESCRIPTION
15:8 Reserved Reserved. The user should write 0 to these bits.
7:0 D[7:0] Data for I
2
C transfer is read from or written to this location. The I
2
C transmit and receive buffers are
separate but both are addressed at this location.