ZHCS266F June 2011 – May 2017 TRF7960A
PRODUCTION DATA.
Table 6-11 lists the valid commands that the MCU can send to the reader.
The command code values from Table 6-11 are substituted in Table 6-12, Bits 0 to 4. Also, the most significant bit (MSB) in Table 6-12 must be set to 1.
| BIT | DESCRIPTION | BIT FUNCTION | ADDRESS | COMMAND |
|---|---|---|---|---|
| B7 | Command control bit | 0 = Address 1 = Command |
0 | 1 |
| B6 | Read/Write | 0 = Write 1 = Read |
R/W | 0 |
| B5 | Continuous address mode | Continuous mode | Not used | |
| B4 | Address/Command bit 4 | Adr 4 | Cmd 4 | |
| B3 | Address/Command bit 3 | Adr 3 | Cmd 3 | |
| B2 | Address/Command bit 2 | Adr 2 | Cmd 2 | |
| B1 | Address/Command bit 1 | Adr 1 | Cmd 1 | |
| B0 | Address/Command bit 0 | Adr 0 | Cmd 0 |
The MSB determines if the word is to be used as a command or address. The last two columns of Table 6-12 show the function of separate bits depending on whether address or command is written. Command mode is used to enter a command resulting in reader action (for example, initialize transmission, enable reader, or turn the reader on or off).