dscr*.inc: Document polling intervals better.

[sigrok-firmware-fx2lafw.git] / include / dscr_hantek_6022be.inc

diff --git a/include/dscr_hantek_6022be.inc b/include/dscr_hantek_6022be.inc
index f5f50c0f2deb4690ecb7b714144275d0778ad562..0f8eb0084bb161287cd4629db944f61d45577047 100644 (file)
--- a/include/dscr_hantek_6022be.inc
+++ b/include/dscr_hantek_6022be.inc
@@ -110,7 +110,7 @@ highspd_dscr_end:
        .db     ENDPOINT_TYPE_BULK      ; Endpoint type (bulk)
        .db     0x00                    ; Max. packet size, LSB (512 bytes)
        .db     0x02                    ; Max. packet size, MSB (512 bytes)
-       .db     0x00                    ; Polling interval
+       .db     0x00                    ; Polling interval (ignored for bulk)
 
        ; Isochronous interface 0, alt 1
        .db     DSCR_INTERFACE_LEN
@@ -132,7 +132,7 @@ highspd_dscr_end:
        .db     0x14                    ; Max. packet size, MSB (3*1024 bytes)
                                        ; 12:11 = 0b10 (3 tr. per microframe)
                                        ; 10:00 = 1024
-       .db     0x01                    ; Polling interval
+       .db     0x01                    ; Polling interval (1 microframe)
 
        ; Isochronous interface 0, alt 2, 16MB/s
        .db     DSCR_INTERFACE_LEN
@@ -154,7 +154,7 @@ highspd_dscr_end:
        .db     0x0c                    ; Max. packet size, MSB (2*1024 bytes)
                                        ; 12:11 = 0b01 (2 tr. per microframe)
                                        ; 10:00 = 1024
-       .db     0x01                    ; Polling interval
+       .db     0x01                    ; Polling interval (1 microframe)
 
        ; Isochronous interface 0, alt 3, 8MB/s
        .db     DSCR_INTERFACE_LEN
@@ -174,7 +174,7 @@ highspd_dscr_end:
        .db     ENDPOINT_TYPE_ISO       ; Endpoint type (iso)
        .db     0x00                    ; Max. packet size, LSB (1024 bytes)
        .db     0x04                    ; Max. packet size, MSB (1024 bytes)
-       .db     0x01                    ; Polling interval
+       .db     0x01                    ; Polling interval (1 microframe)
 
        ; Isochronous interface 0, alt 4, 4MB/s
        .db     DSCR_INTERFACE_LEN
@@ -194,7 +194,7 @@ highspd_dscr_end:
        .db     ENDPOINT_TYPE_ISO       ; Endpoint type (iso)
        .db     0x00                    ; Max. packet size, LSB (1024 bytes)
        .db     0x04                    ; Max. packet size, MSB (1024 bytes)
-       .db     0x02                    ; Polling interval
+       .db     0x02                    ; Polling interval (2 microframes)
 
        ; Isochronous interface 0, alt 5, 2MB/s
        .db     DSCR_INTERFACE_LEN
@@ -214,7 +214,7 @@ highspd_dscr_end:
        .db     ENDPOINT_TYPE_ISO       ; Endpoint type (iso)
        .db     0x00                    ; Max. packet size, LSB (1024 bytes)
        .db     0x04                    ; Max. packet size, MSB (1024 bytes)
-       .db     0x03                    ; Polling interval
+       .db     0x03                    ; Polling interval (4 microframes)
 
        ; Isochronous interface 0, alt 6, 1MB/s
        .db     DSCR_INTERFACE_LEN
@@ -234,7 +234,7 @@ highspd_dscr_end:
        .db     ENDPOINT_TYPE_ISO       ; Endpoint type (iso)
        .db     0x00                    ; Max. packet size, LSB (1024 bytes)
        .db     0x04                    ; Max. packet size, MSB (1024 bytes)
-       .db     0x04                    ; Polling interval
+       .db     0x04                    ; Polling interval (8 microframes)
 
        ; Isochronous interface 0, alt 7, 500kB/s
        .db     DSCR_INTERFACE_LEN
@@ -254,7 +254,7 @@ highspd_dscr_end:
        .db     ENDPOINT_TYPE_ISO       ; Endpoint type (iso)
        .db     0x00                    ; Max. packet size, LSB (512 bytes)
        .db     0x02                    ; Max. packet size, MSB (512 bytes)
-       .db     0x04                    ; Polling interval
+       .db     0x04                    ; Polling interval (8 microframes)
 
 highspd_dscr_realend:
 
@@ -294,7 +294,7 @@ fullspd_dscr_end:
        .db     ENDPOINT_TYPE_BULK      ; Endpoint type (bulk)
        .db     0x40                    ; Max. packet size, LSB (64 bytes)
        .db     0x00                    ; Max. packet size, MSB (64 bytes)
-       .db     0x00                    ; Polling interval
+       .db     0x00                    ; Polling interval (ignored for bulk)
 
        ; Isochronous interface 0, alt 1, 1MB/s
        .db     DSCR_INTERFACE_LEN
@@ -314,7 +314,7 @@ fullspd_dscr_end:
        .db     ENDPOINT_TYPE_ISO       ; Endpoint type (iso)
        .db     0xff                    ; Max. packet size, LSB (1023 bytes)
        .db     0x03                    ; Max. packet size, MSB (1023 bytes)
-       .db     0x01                    ; Polling interval
+       .db     0x01                    ; Polling interval (1 frame)
 
        ; Isochronous interface 0, alt 2, 500kB/s
        .db     DSCR_INTERFACE_LEN
@@ -334,7 +334,7 @@ fullspd_dscr_end:
        .db     ENDPOINT_TYPE_ISO       ; Endpoint type (iso)
        .db     0x00                    ; Max. packet size, LSB (512 bytes)
        .db     0x02                    ; Max. packet size, MSB (512 bytes)
-       .db     0x01                    ; Polling interval
+       .db     0x01                    ; Polling interval (1 frame)
 
 fullspd_dscr_realend: