MPC555
/
MPC556
TIME PROCESSOR UNIT 3
MOTOROLA
USER’S MANUAL
Rev. 15 October 2000
17-17
17.4.9 Host Service Request Registers
The host service request field selects the type of host service request for the time func-
tion selected on a given channel. The meaning of the host service request bits is de-
termined by time function microcode. Refer to the
TPU Reference Manual
(TPURM/
AD)
and the Motorola
TPU Literature Package (TPULITPAK/D)
for more information.
HSQR0 —
Host Sequence Register 0
0x30 4014
0x30 4414
MSB
LSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CH 15
CH 14
CH 13
CH 12
CH 11
CH 10
CH 9
CH 8
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
HSQR1 —
Host Sequence Register 1
0x30 4016
0x30 4416
MSB
LSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CH 7
CH 6
CH 5
CH 4
CH 3
CH 2
CH 1
CH 0
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 17-12 HSQRx Bit Descriptions
Name
Description
CH[15:0]
Encoded host sequence. The host sequence field selects the mode of operation for the time function
selected on a given channel. The meaning of the host sequence bits depends on the time function
specified.
HSRR0 —
Host Service Request Register 0
0x30 4018
0x30 4418
MSB
LSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CH 15
CH 14
CH 13
CH 12
CH 11
CH 10
CH 9
CH 8
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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