en

This register is used to enable one of the 5 scan-chains (0-3 and 7). Only one scan-chain must be enabled at a time. A scan-chain is enabled by writing its corresponding enable field. Software must use the System Manager to put the corresponding I/O scan-chain into the frozen state before attempting to send I/O configuration data to the I/O scan-chain. Software must only write to this register when the Scan-Chain Engine is inactive.Writing this field at any other time has unpredictable results. This means that before writing to this field, software must read the STAT register and check that the ACTIVE and WFIFOCNT fields are both zero. The name of this register in documentation is PSEL.
Module Instance Base Address Register Address
scanmgr 0xFFF02000 0xFFF02004

Offset: 0x4

Access: RW

Important: To prevent indeterminate system behavior, reserved areas of memory must not be accessed by software or hardware. Any area of the memory map that is not explicitly defined as a register space or accessible memory is considered reserved.
Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

Reserved

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Reserved

fpgajtag

RW 0x0

Reserved

ioscanchain3

RW 0x0

ioscanchain2

RW 0x0

ioscanchain1

RW 0x0

ioscanchain0

RW 0x0

en Fields

Bit Name Description Access Reset
7 fpgajtag

Used to enable or disable FPGA JTAG scan-chain.Software must use the System Manager to enable the Scan Manager to drive the FPGA JTAG before attempting to communicate with the FPGA JTAG via the Scan Manager. The name of this field in documentation is PSEL7.

Value Description
0x0 Disable scan-chain
0x1 Enable scan-chain
RW 0x0
3 ioscanchain3

Used to enable or disable I/O Scan-Chain 3 The name of this field in documentation is PSEL3.

Value Description
0x0 Disable scan-chain
0x1 Enable scan-chain
RW 0x0
2 ioscanchain2

Used to enable or disable I/O Scan-Chain 2 The name of this field in documentation is PSEL2.

Value Description
0x0 Disable scan-chain
0x1 Enable scan-chain
RW 0x0
1 ioscanchain1

Used to enable or disable I/O Scan-Chain 1 The name of this field in documentation is PSEL1.

Value Description
0x0 Disable scan-chain
0x1 Enable scan-chain
RW 0x0
0 ioscanchain0

Used to enable or disable I/O Scan-Chain 0 The name of this field in documentation is PSEL0.

Value Description
0x0 Disable scan-chain
0x1 Enable scan-chain
RW 0x0