Specifications

5 – Serial Peripheral Interface
Page 36 Airborne Wireless LAN Node Module Data Book 100-8004-102G
Quatech, Inc. Confidential
5.4 SPI LOGICAL INTERFACE
5.4.1 SPI Read Configuration
The SPI Slave Status may be obtained by sending the Read Configuration command.
Read Configuration
Table 14. SPI Read Configuration Command
Command Length Value (0x40)
RCONF 1 Octet Bit 7 = 0
Bit 6 = 1
Bits 5:0 = 0 (reserved, must be set to 0)
Response
The returned status is strictly informative and the Host should not assume that the Slave takes
any particular action as the result of a status value sent. The following status values are
currently defined – other values may be added in the future:
Bit 7 Slave Transmit Buffer: 1 – Data Available; 0 – Buffer Empty
Bit 6 Slave Receive Buffer: 1 – Ready for Data; 0 – Buffer Full
Bit 5 Slave Receive Interrupt Mask: 1 – Interrupt Enabled; 0 – Interrupt Disabled
Bit 4 Slave Transmit Interrupt Mask: 1 – Interrupt Enabled; 0 – Interrupt Disabled
Bits 3:0 Reserved for Future Use
Figure 12. Read Configuration Timing Diagram