CS4630-CM View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
CS4630-CM Datasheet PDF : 38 Pages
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CS4630
6. GAME PORT
6.1 MIDI Port
In the AC ’97 controller configuration, a bi-direc-
tional MIDI interface is provided to allow connec-
tion of external MIDI devices. The MIDI interface
includes 16-byte FIFOs for the MIDI transmit and
receive paths.
6.2 Joystick Port
In the AC ’97 controller configuration, a joystick
port is provided. The joystick port supports four
“coordinate” channels and four “button” channels.
The coordinate channels provide joystick position-
al information to the host, and the button channels
provide user button event information. The joystick
interface is capable of operating in the traditional
“polled” mode, but also provides a “hardware ac-
celerated” mode of operation wherein internal
counters are provided to assist the host with coordi-
nate position determination. The Joystick schemat-
ic is illustrated in Figure 13.
+5 V
DSP
1
4.7 k Ω
4.7 k Ω
9
JAB1
2
JBB1
10
JACX
2.2 k Ω
3
JBCX
2.2 k Ω
11
5.6 nF
5.6 nF
1 nF
1 nF
4
12
JBCY
JACY
4.7 k Ω 4.7 k Ω
5
2.2 k Ω
13
2.2 k Ω
6
JBB2
14
JAB2
7
4.7 k Ω
MIDIOUT
15
5.6 nF 5.6 nF 1 nF 1 nF
8
MIDIIN
Figure 13. Joystick Logic
22
DS445PP1
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