Chapter 19 Simple Sound Generator (SSGV1)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
656
Freescale Semiconductor
Figure 19-1. SSG Block Diagram
19.2
External Signal Description
19.2.1
SGT
Tone output signal of SSG, which can be a single output tone signal or a tone combined with amplitude
encoding.
SGT
SGA
prescaler
counter
SSGPS_B
SSGAMP_B
attack/decay
logic
SSGTONE_B
tone
counter
amplitude
logic
tone duration
counter
SSGDUR_B
mix
bus clock
OMS
SSGAA_B
SSGADC_B
speaker
external circuit
NOTE: XXX_B is the buffer register of relevant XXX register
SSGIF
SSGE
STP
Amplifier
The external circuit diagram is just for the OMS=0 case
1
0
External amplifier is required due to the limited driving capability of SGT pad