Tadpole SPARCbook 3 series, Reference Manual

Page: 94 / 216

7-12
PCMCIA Interface
Microcontroller Registers
7.3.4 Microcontroller Interrupt Register
7.3.5 Microcontroller data register
7.3.6 Microcontroller status register
7.4 Microcontroller Registers
Bit Name Function Asserted Reset
0 TXE_REQ Transmit FIFO empty inter-
rupt request 1 0
1 TXNF_REQ Transmit FIFO not full inter-
rupt request 1 0
2 RXNE_REQ Receive FIFO not empty
interrupt request 1 0
3 RXO_REQ Receive FIFO overflow inter-
rupt request 1 0
4 TXE_MSK Transmit FIFO empty mask 1 0
5 TXNF_MSK Transmit FIFO not full mask 1 0
6 RXNE_MSK Receive FIFO not empty
mask 1 0
7 RXO_MSK Receive FIFO full mask 1 0
Table 7-8 Microcontroller Interrupt Register
Bit Read Write
D[7:0] Data from microcontroller Data to microcontroller
Table 7-9 CPU Data Register
Bit Name Function Asserted Reset
0 TXE_STA Transmit FIFO empty status 1 1
1 TXNF_STA Transmit FIFO not full status 1 1
2 RXNE_STA Receive FIFO not empty sta-
tus 1 0
3 RXO_STA Receive FIFO overflow status 1 0
Table 7-10 Microcontroller Status Register
S3GX_TRMBook Page 12 Friday, September 19, 1997 11:39 am