at83c26 ATMEL Corporation, at83c26 Datasheet - Page 35

• Manufacturer Part Number: at83c26
• Description: Multiple Smart Card Reader Interface With Power Management
• Manufacturer: ATMEL Corporation

Read Command
7511D–SCR–02/07
[10]
[11]
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
1. After reset or
write command
number 2, 3, 4
SC1_STATUS
SC1_CFG0
SC1_CFG1
SC1_CFG2
SC1_CFG3
SC1_CFG4
SC1_INTERFACE
TIMER_MSB
TIMER_LSB
CAPTURE_MSB
CAPTURE_LSB
0xFF
After a write command, even with a length of 0 byte, the next read operation is performed on the
corresponding byte. The write command sets the “read pointer”.
After the reset, the “read pointer” is on SC1 registers
FFh is completing the transfer if the micro controller attempts to read beyond the last byte.
Flags are only reseted after the corresponding byte read has been acknowledged by the master.
Table 7. Read Commands Description
Figure 23. Read command byte
2. After
write
command
number 6
STATUSB
IO_SELECT
INTERFACE_B
ITDIS
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
3. After
write command
number 7
SC2_CFG0
SC2_CFG1
SC2_CFG2
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
b7
0
b6
1
4. After
write
command
number 8
SC3_CFG0
SC3_CFG2
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
b5
0
b4
0
5. After
write
command
number 9
SC4_CFG0
SC4_CFG2
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
levels on reset
b3
X
A2
b2
X
A1
6. After
write
command
number 10
SC5_CFG0
SC5_CFG2
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
b1
1
b0
1
7. After
write
command
number 11
DCDCB
LDO
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
AT83C26
8. After
write
command
number 12
SLEW_CTRL_1
SLEW_CTRL_2
SLEW_CTRL_3
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
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