ATAM894X-TNQY ATMEL [ATMEL Corporation], ATAM894X-TNQY Datasheet - Page 70

• Manufacturer Part Number: ATAM894X-TNQY
• Description: 8k-flash Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

6.3.4.14
6.3.4.15
70
ATAM894
Serial Interface Status and Control Register (SISC)
Serial Transmit Buffer (STB) – Byte Write
The STB is the transmit buffer of the SSI. The SSI transfers the transmit buffer into the shift reg-
ister and starts shifting with the most significant bit.
SISC write
SISC read
MCL
RACK
TACK
SIM
IFN
SRDY
ACT
First write cycle
Second write cycle
Multi-Chip Link activation
MCL = 1, multi-chip link disabled. This bit has to be set to '0' during transactions to/from
MCL = 0, connects SC and SD, additionally to the internal multi-chip link pads
Receive ACKnowledge status/control bit for MCL mode
RACK = 0, transmit acknowledge in next receive telegram
RACK = 1, transmit no acknowledge in last receive telegram
Transmit ACKnowledge status/control bit for MCL mode
TACK = 0, acknowledge received in last transmit telegram
TACK = 1, no acknowledge received in last transmit telegram
Serial Interrupt Mask
SIM = 1, disable interrupts
SIM = 0, enable serial interrupt. An interrupt is generated
Interrupt FuNction
IFN = 1, the serial interrupt is generated at the end of telegram
IFN = 0, the serial interrupt is generated when the SRDY goes low (i.e., buffer becomes
Serial interface buffer ReaDY status flag
SRDY = 1,
SRDY = 0,
Transmission ACTive status flag
ACT = 1, transmission is active, i.e., serial data transfer. Stop or start conditions are
ACT = 0, transmission is inactive
MCL
Bit 3
- - -
the internal EEPROM
empty/full in transmit/receive mode)
currently in progress.
Bit 3
Bit 7
in receive mode: receive buffer empty
in transmit mode: transmit buffer full
in receive mode: receive buffer full
in transmit mode: transmit buffer empty
RACK
TACK
Bit 2
Bit 2
Bit 6
Bit 1
ACT
SIM
Bit 1
Bit 5
Bit 0
Bit 4
SRDY
Bit 0
IFN
Primary register address: '9'hex
Primary register address: 'A'hex
Reset value: xxxxb
Reset value: xxxxb
Reset value: 1111b
Reset value: xxxxb
4679D–4BMCU–05/05