Rainbow Electronics AT83C26 - Manual (Page 33)

33
7511B–SCR–10/05
AT83C26
Write Commands
The write commands are:
1. General Call Reset:
A general call followed by the value 06h has the same effect as a Reset command.
2. Reset:
Initialize all the logic and the TWI interface as after a power-up or power-fail reset. If the
interface is activated, an emergency de-activation sequence is also performed. This is a
one-byte command.
3. Write SC1_CFG0, SC1_CFG1, SC1_CFG2, SC1_CFG3, SC1_CFG4:
Configure the device according to the last six bits in the SC1_CFG0 register and to the fol-
lowing four bytes in SC1_CFG1, SC1_CFG2, SC1_CFG3 then SC1_CFG4 registers. This is
a five bytes command.
Figure 22. Command byte format for Write SC1_CFG0 command
4. Write TIMER_MSB, TIMER_LSB:
Program the 16-bit automatic reset transition timer with the following two bytes. This is a
three bytes command.
5. Write SC1_INTERFACE:
Program the interface byte. This is a one-byte command. The MSB of the command byte is
fixed at 0.
6. Write common config smart cards:
IO_SELECT, INTERFACE_B, ITDIS:
Configuration of parameters for smart card interfaces.
7. Write SC2 interface: SC2_CFG0, SC2_CFG1, SC2_CFG2
Configuration of smart card interface 2.
8. Write SC3 interface: SC3_CFG0, SC3_CFG2
Configuration of SIM/SAM interface 3.
9. Write SC4 interface: SC4_CFG0, SC4_CFG2
Configuration of SIM/SAM interface 4.
b7 b6 b5 b4 b3 b2 b1
1 X 0 X X X X
SC1_CFG0 on 6 Bits
b0
X