Gigabeat Port Pin Assignments
The values of the port pin control registers after boot:
| Port |
Config value |
| A |
00 |
FF |
FF |
FF |
| B |
00 |
01 |
54 |
95 |
| C |
AA |
A0 |
54 |
A8 |
| D |
AA |
A0 |
AA |
A5 |
| E |
AA |
80 |
02 |
AA |
| F |
00 |
00 |
0A |
AA |
| G |
01 |
50 |
10 |
00 |
| H |
00 |
15 |
40 |
A5 |
Port A
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
F |
ADDR0 |
F7 |
| 1 |
F |
ADDR16 |
D9 |
| 2 |
F |
ADDR17 |
G9 |
| 3 |
F |
ADDR18 |
F9 |
| 4 |
F |
ADDR19 |
H9 |
| 5 |
F |
ADDR20 |
D10 |
| 6 |
F |
ADDR21 |
C10 |
| 7 |
F |
ADDR22 |
H10 |
| 8 |
F |
ADDR23 |
E10 |
| 9 |
F |
ADDR24 |
C11 |
| 10 |
F |
ADDR25 |
D10 |
| 11 |
F |
ADDR26 |
G11 |
| 12 |
F |
nGCS[1] |
B2 |
| 13 |
F |
nGCS[2] |
C3 |
| 14 |
F |
nGCS[3] |
C4 |
| 15 |
F |
nGCS[4] |
D3 |
| 16 |
F |
nGCS[5] |
C2 |
| 17 |
F |
CLE |
F5 |
| 18 |
F |
ALE |
D1 |
| 19 |
F |
nFWE |
F3 |
| 20 |
F |
nFRE |
E1 |
| 21 |
F |
nRSTOUT |
N13 |
| 22 |
F |
nFCE |
F4 |
Port B
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
O |
|
J6 |
| 1 |
O |
|
J5 |
| 2 |
O |
SC606 enable |
J7 |
| 3 |
F |
TOUT3 to generate audio beeps |
K3 |
| 4 |
I/O |
USB2ATA?: RESET# |
K4 |
| 5 |
O |
USB2ATA?: ATA_EN |
K2 |
| 6 |
O |
USB2ATA?: VBUS_PRW_VALID |
L5 |
| 7 |
O |
LCD reset |
K7 |
| 8 |
O |
LCD CS |
K5 |
| 9 |
I |
|
L3 |
| 10 |
I |
|
K6 |
Port C
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
I |
flash related |
L1 |
| 1 |
F |
VCLK |
M4 |
| 2 |
F |
VLINE |
M1 |
| 3 |
F |
VFRAME |
L7 |
| 4 |
I |
flash related |
M4 |
| 5 |
O |
mutes headphone output (HPDETECT?) |
M3 |
| 6 |
O |
flash lock |
M2 |
| 7 |
O |
SDI/SDO to DAC switch |
P1 |
| 8 |
I |
flash related |
N2 |
| 9 |
I |
flash related |
L6 |
| 10 |
F |
video data B0 |
N4 |
| 11 |
F |
video data B1 |
R1 |
| 12 |
F |
video data B2 |
N3 |
| 13 |
F |
video data B3 |
P2 |
| 14 |
F |
video data B4 |
M6 |
| 15 |
F |
video data B5 |
P3 |
Port D
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
O |
cradle: speaker amp control? |
R2 |
| 1 |
O |
cradle: speaker amp control? |
N5 |
| 2 |
F |
video data G0 |
M5 |
| 3 |
F |
video data G1 |
R3 |
| 4 |
F |
video data G2 |
P4 |
| 5 |
F |
video data G3 |
R4 |
| 6 |
F |
video data G4 |
P5 |
| 7 |
F |
video data G5 |
N6 |
| 8 |
I |
|
M7 |
| 9 |
I |
|
T4 |
| 10 |
F |
video data R0 |
R5 |
| 11 |
F |
video data R1 |
T5 |
| 12 |
F |
video data R2 |
P6 |
| 13 |
F |
video data R3 |
R6 |
| 14 |
F |
video data R4 |
N7 |
| 15 |
F |
video data R5 |
U5 |
Port E
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
F |
I2SLRCK? |
P7 |
| 1 |
F |
I2SSCLK? |
R7 |
| 2 |
F |
CDCLK |
T7 |
| 3 |
F |
I2SDI? |
L8 |
| 4 |
F |
I2SDO? |
U6 |
| 5 |
I |
|
N8 |
| 6 |
I |
|
K8 |
| 7 |
I |
|
R8 |
| 8 |
I |
|
M8 |
| 9 |
I |
|
P8 |
| 10 |
I |
|
J9 |
| 11 |
F |
SPIMOSO0 |
K9 |
| 12 |
F |
SPIMOSI0 |
P9 |
| 13 |
F |
SPICLK0 |
L9 |
| 14 |
F |
IICSCL |
U8 |
| 15 |
F |
IICSDA |
M9 |
Port F
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
F |
EINT0 / unit USB connected |
N17 |
| 1 |
F |
EINT1 / cradle USB connected |
M16 |
| 2 |
F |
EINT2 / ATA IRQ |
L13 |
| 3 |
F |
EINT3 |
M15 |
| 4 |
F |
EINT4 / charger connected (main or cradle) |
M17 |
| 5 |
F |
EINT5 |
L14 |
| 6 |
F |
EINT6 / cradle sync button |
L15 |
| 7 |
I |
cradle CD rip button |
L16 |
Port G
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
I |
power button |
N9 |
| 1 |
I |
menu button |
T9 |
| 2 |
I |
volume up button |
J10 |
| 3 |
I |
volume down button |
R10 |
| 4 |
I |
A button |
P11 |
| 5 |
I |
|
K11 |
| 6 |
O |
RI Onkyo? (set to 0 in legna_misc_cradle_power_on) |
R10 |
| 7 |
I |
|
L10 |
| 8 |
I |
battery charging |
T10 |
| 9 |
I |
battery switch |
M11 |
| 10 |
O |
USB2ATA?: ARESET# |
N10 |
| 11 |
O |
set to 1 in power_up_seq in hdd_pm, 0 spins down drive, 1 spins up drive |
U12 |
| 12 |
O |
set to 0 in power_up_seq in hdd_pm |
M10 |
| 13 |
I |
cradle powered |
T11 |
| 14 |
I |
cradle usb/line-in switch |
L11 |
| 15 |
I |
hold switch |
U13 |
Port H
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
O |
|
K11 |
| 1 |
O |
|
L17 |
| 2 |
F |
TXD0 |
K13 |
| 3 |
F |
RXD0 |
K14 |
| 4 |
I |
|
K16 |
| 5 |
I |
|
K17 |
| 6 |
I |
|
J11 |
| 7 |
O |
Dock connector bus switch enable |
J15 |
| 8 |
O |
Cradle power control |
K15 |
| 9 |
I/O |
SC606 serial data |
R9 |
| 10 |
O |
SC606 serial clock |
P10 |
Port J (touchpad)
| Port pin |
I/O/F |
Description |
CPU pin |
| 0 |
I |
up++ |
H6 |
| 1 |
I |
up+ |
G3 |
| 2 |
I |
up |
H5 |
| 3 |
I |
center |
H4 |
| 4 |
I |
down |
H3 |
| 5 |
I |
down+ |
H7 |
| 6 |
I |
down++ |
J8 |
| 7 |
I |
left++ |
H2 |
| 8 |
I |
left+ |
G5 |
| 9 |
I |
left |
G7 |
| 10 |
I |
right |
G2 |
| 11 |
I |
right+ |
J3 |
| 12 |
I |
right++ |
J4 |
Dock connector
| Port pin |
Description |
| 1 |
ground |
| 2 |
data – (USB2ATA?) |
| 3 |
data + (USB2ATA?) |
| 4 |
ground |
| 5 |
line-out R? |
| 6 |
line-out L? |
| 7 |
ground |
| 8 |
IICCLK * |
| 9 |
IICSDA * |
| 10 |
I2SLRCK? * |
| 11 |
I2SSCLK? * |
| 12 |
I2SSDI? * |
| 13 |
I2SSDO? * |
| 14 |
GPC7: SDI/SDO to DAC switch * |
| 15 |
GPD1: speaker amp control? |
| 16 |
GPD0: speaker amp control? |
| 17 |
GPG13: optiondetect? |
| 18 |
GPG6 (via resistor R127): RI Onkyo? |
| 19 |
VSSiarm??: RI Onkyo? |
| 20 |
GPG14: cradle usb/line-in switch |
| 21 |
GPF6 & ADC input 2 (3rd) - sync button on cradle |
| 22 |
GPF7 & ADC input 3 (4th) - CD rip button on cradle |
| 23 |
data – for usb peripheral |
| 24 |
data + for usb peripheral |
| 25 |
data – from usb host |
| 26 |
data + from usb host |
| 27 |
GPH8: cradle power control |
| 28 |
GPF1: cradle USB connected |
| 29 |
DP5: PCRADLE +5V from cradle |
| 30 |
| 31 |
| 32 |
| 33 |
NC |
| 34 |
DP23: PVOUT +4.2V to cradle |
| 35 |
| 36 |
ground from cradle |
| 37 |
ground |
| 38 |
| 39 |
| 40 |
* these pins can be enabled/disabled with H8
Debug connector
| Port pin |
Description |
| 1 |
ground |
| 2 |
nTRST |
| 3 |
GPH3: RXD0 |
| 4 |
+ |
| 5 |
nRESET |
| 6 |
TCK |
| 7 |
TDO |
| 8 |
TMS |
| 9 |
GPH2: TXD0 |
| 10 |
TDI |
Copyright © by the contributing authors.
