Freescale Semiconductor e200z3, Справочное руководство

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Nexus3/ Module
e200z3 Power Architecture Core Reference Manual, Rev. 2
Freescale Semiconductor 10-11
10.4.1 Client Select Control Register (CSC)
The CSC register determines which Nexus client is under development. This register is present at the
top-level SOC Nexus3/ controller to select an on-chip Nexus3/ units
Figure 10-3 shows
the CSC register.
10.4.2 Port Configuration Register (PCR)
The port configuration register (PCR) shown in Figure 10-4 controls the basic port functions for all Nexus
modules in a multiple Nexus environment. This includes clock control and auxiliary port width. All bits
in this register are writable only once after system reset.
Data trace control (DTC) 0xD R/W 0x1A 0x1B
Data trace start address1 (DTSA1) 0xE R/W 0x1C 0x1D
Data trace start address2 (DTSA2) 0xF R/W 0x1E 0x1F
Data trace end address1 (DTEA1) 0x12 R/W 0x24 0x25
Data trace end address2 (DTEA2) 0x13 R/W 0x26 0x27
Reserved 0x14–0x3F — 0x28–0x7E 0x29–0x7F
1
The CSC and PCR registers are shown in this table as part of the Nexus programmer’s model.
They are only present at the top level SoC Nexus3/ controller in a multiple Nexus
implementation, not in the e200z3 Nexus3/ module. The SoC’s CSC register is readable
through Nexus3/, but the PCR is shown here for reference only.
2 PCR_INDEX is a parameter determined by the SoC. Refer to the reference manual for the device
integrating the e200z3 core for more information on how this parameter is implemented for each
Nexus module.
7 4 3 0
Field — CS
Reset All zeros
R/W Read only
Number 0x1
Figure 10-3. Client Select Control Register
Table 10-8. CSC Field Descriptions
Bits Name Description
7–4 — Reserved, should be cleared.
3–0 CSC
Client select control
0xX = Nexus client (SoC level)
Table 10-7. Nexus3/ Register Map (continued)
Nexus Register
Nexus
Access
Opcode
Read/Write
Read
Address
Write
Address