Load Image Block; Write Target Selective; Read Target Selective; Set Target - Texas Instruments MSP430 User Manual

www.ti.com

3.5.6 Load Image Block

The Load Image Block command loads the data bytes into the image buffer of the MSP-GANG430 and
verifies them.
D1 to Dn–4 contain the data bytes.

3.5.7 Write Target Selective

The Write Target Selective command loads the data bytes into one exclusively selected target flash
memory and verifies them.
Before applying this operation, stable supply voltage at the targets is assumed (if not, use Set Target V
command and optionally wait for capacitor's settle time).
D1: Target number (0 to 7)
D2: 0
D3 to Dn–4 contain the data bytes (start address and number of bytes must be even numbered).

3.5.8 Read Target Selective

The Read Target Selective command is used for any read access to the flash memory/RAM or peripheral
module control registers at 0x0100 to 0x01FE of the selected target.
The 20-bit block start address is defined as:
Address = A3 × 0x10000 + A2 × 0x100 + A1
The 16-bit block length is defined in LL (low byte) and LH (high byte). Because pure data bytes are limited
to a maximum of 244, LH is always 0.
For this operation, stable supply voltage at the targets is necessary. If not, use Set Target V
and wait for capacitor's settle time, as required.
D1: Target number (0 to 7)
D2: 0
The GANG430 responds with the requested data block. No acknowledge character is necessary.
D1 to Dn contain the data bytes (start address and number of bytes must be even numbered).
3.5.9 Set Target V
CC
The Set Target V
CC
given value.
D1: Target supply voltage
0: VCC_MSP output voltage is equal to MSP_VCC_IN input voltage.
1: VCC_MSP output voltage is switched off.
2: VCC_MSP output voltage is same as loaded by the Load Parameters command.
18+: VCC_MSP is set in hundreds of millivolts (e.g., D1 = 36 for 3.6 V).

3.5.10 Load Image Checksum

The Load Image Checksum command writes the checksums of all non-empty memory segments (Info_x,
main, RAM) and the memory model of the target device into the system flash memory. The gang
programmer uses the checksums to verify the correct download of data to the image buffer and the correct
programming of the target device.
On devices with protected information memory segments (e.g., SegA on F2xxx devices), it can be
indicated if this segment should be excluded from erasure when the other information memory segments
are to be erased.
The number of parameters depends on the memory model of the selected device.
SLAU101O – March 2003 – Revised May 2010
command sets the VCC_MSP pin voltage of the programmer's target connector to the
Copyright © 2003–2010, Texas Instruments Incorporated
Detailed Description of Commands
command
CC
Firmware
CC
29