Probe Write Debug Service

Writes up to 18 bits of data to the selected probe address.

Table 1. Probe Write Debug Service Request
System Service Descriptor Bit Field Value Description
15:7 MBOXADDR[10:2] Mailbox address. See Table 2.
6:0 71H Probe Write Debug service command

The following table lists the Probe Write Service mailbox format.

Table 2. Probe Write Service Mailbox Format
Offset (Byte) Offset (Bit) Length (Bits) Parameter Direction Description
0 0 6 PRBADDR[5:0] Input Specifies one of 59 words within a probe module.
2 0 6 IPSEGADDR[5:0] Input Specifies the probe segment address.
2 6 5 IPROWADDR[4:0] Input Specifies the probe row address.
4   18 PWMASK[17:0] Input Specifies 18 bits of PWDATA is written to selected probe module.
8   18 PWDATA[17:0] Input Specifies the value to be written on selected probe registers. Example: If PWMASK[i] is ‘1’, probe register i is written to the value specified by PWDATA[i].