Nexus 3 Programmer's Model - STMicroelectronics SPC572L series Reference Manual

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Table 1076. Data Trace Size (DSZ) Encodings (TCODE = 5,6,13,14)(Continued)
66.4

Nexus 3 Programmer's Model

This section describes the Nexus 3 programmers model. Nexus 3 registers are accessed
using the JTAG/OnCE port in compliance with IEEE 1149.1, or by software via DCRs. See
Section 66.5, Nexus 3 Register Access via JTAG/OnCE
Access via
Note: Nexus 3 registers and output signals are numbered using bit 0 as the least significant bit.
This bit ordering is consistent with the ordering defined by the IEEE-ISTO 5001 standard.
Table 1077
Nexus Register
Client Select Control (CSC)
Port Configuration Register (PCR)
Development Control 1 (DC1)
Development Control 2 (DC2)
Development Control 3 (DC3)
Development Control 4 (DC4)
Reserved
Read/Write Access Control/Status (RWCS)
Reserved
Read/Write Access Address (RWA)
Read/Write Access Data (RWD)
Watchpoint Trigger (WT)
Reserved
Data Trace Control (DTC)
Data Trace Start Address 1 (DTSA1)
DTM Size Encoding
0010
0011
0100
0101
0110
0111
1000
1001–1111
Softwarefor details on Nexus 3 register access.
details the register map for the Nexus 3 module.
Table 1077. Nexus 3 Register Map
Nexus Access
(2)
(3)
PCR_INDEX
DocID027809 Rev 4
Halfword (2 bytes)
Three bytes
Word (4 bytes)
Five bytes
Six bytes
Seven bytes
Doubleword (8 bytes)
Reserved
and
Read/
Opcode Write
0x1 R
2
R/W
0x2 R/W
0x3 R/W
0x4 R/W
0x5 R/W
0x6 R/W
0x7 R/W
0x8 R/W
0x9 R/W
0xA R/W
0xB R/W
0xC R/W
0xD R/W
0xE R/W
e200z215An3 Nexus 3 Module
Transfer Size
Section 66.6, Nexus 3 Register
Read Write
Address Address
0x02 —
— —
0x04 0x05
0x06 0x07
0x08 0x09
0x0A 0x0B
0x18 0x19
0x0E 0x0F
0x18 0x19
0x12 0x13
0x14 0x15
0x16 0x17
0x18 0x19
0x1A 0x1B
0x1C 0x1D
DCR
(1)
#
368
369
370
371
—
—
—
—
—
375
—
376
377
1919/2058
1982